SIC "RADIATION PHYSICS OF MATERIALS"

The Scientific Center for the investigation of the nature of luminescence and the mechanisms for creating radiation defects in alkali-halide crystals (AHC) with a symmetry of the lattice lowered was organized on the initiative of K.Sh. Shunkeyev in 1984. With the direct support of academician Luschik Cheslav Bronislavovich, the laboratory acquired a scientific direction and was equipped with the necessary instruments for creating experimental facilities for absorption, luminescence and thermoactivation spectroscopy, as well as recording ion conductivity and thermostimulated crystal depolarization currents as the lattice symmetry decreases.

An universal cryostat, developed by us, was manufactured in the design bureau of the Institute of Physics of the University of Tartu of Estonia.

Directions of scientific research:

• Experimental studies by absorption, luminescent and thermoactivation spectroscopy methods, as well as recording of ionic conductivity and currents of thermally stimulated depolarization of crystals with decreasing symmetry of the lattice.
• Theoretical studies of the processes of autolocalization of electronic excitations in alkali-halide crystals with a decrease in lattice symmetry.
• Computer simulation of the mechanisms of formation of radiation defects in alkali-halide crystals with a decrease in lattice symmetry.
• Theoretical study and computer simulation of fluctuation superconductivity and current transport in loosely coupled superconductors.
• Development of technology for the compilation of a modern geological map for diatomite resources in the Aktobe region of the Mugalzhar district (“Zhalpak” area).

International cooperation is carried out with the following organizations:

• University of Tartu (Tartu, Estonia),
• Kazimierz Wielki University (Bydgoszcz, Poland),
• University of Gdansk (Gdansk,Poland),
• University of Latvia (Latvia,Riga),
• Lomonosov Moscow State University (Moscow, Russia),
• Ioffe physical-technical institute (Saint-Peterburg, Russia),
• National Research Tomsk University (Tomsk, Russia),
• Ural Federal University named after the First President of Russia B.N. Yeltsin (Yekaterinburg, Russia),
• Kemerovo State University (Kemerovo, Russia),
• Yanka Kupala State University of Grodno (Grodno, Belarus).
• National Laboratory Astana (Nur-Sultan, Kazakhstan).
• Institute of Nuclear Physics (Astana, Kazakhstan).

Academic mobility of students and faculty of the university with Gdansk (Poland) and Tartu (Estonia) universities is carried out.

Collaborative work with international partners at the Research Center: Professor Yurii Zorenko, dr hab of the Casimir the Great University (Bydgoszcz, Poland, photo left), Andrei German, CSci, docent of the Y. Kupala State University (Grodno, Belarus, photo right).

 

The experimental research is also conducted at the P66 station of DESY (Deutsches Elektronen-Synchrotron, Hamburg, Germany) and aimed at studying the mechanisms of electronic excitation and the luminescent properties of alkali halide crystals, which are of interest for the development of scintillation and dosimetric materials.
DESY is a global center for materials research using synchrotron radiation and a member of the Helmholtz Association, one of the largest research organizations in Europe.
The work is conducted as part of an international scientific collaboration with researchers from Casimir the Great University (Poland).

  

During her doctoral internship, Adelya Kenzhebayeva conducted experiments at the P66 station in DESY (Hamburg, Germany) with the research group of Professor Yurii Zorenko.

For the first time, unique experiments are being conducted to investigate the ionoluminescence of alkali halide crystals under irradiation with light and heavy ions using the DC-60 accelerator at the Astana branch of the Institute of Nuclear Physics, Kazakhstan. An automated spectroscopic system developed at the «Radiation Physics of Materials» research center and operated in conjunction with the DC-60 accelerator enables the investigation of X-ray luminescence, photoluminescence, and tunneling luminescence, as well as the study of their decay kinetics. The system also allows thermally stimulated luminescence to be recorded in photon-counting mode using a photomultiplier manufactured by the Japanese company Hamamatsu.

  

Researchers Zhiger Ubaev and Dulat Zhumabayev conducted the experiment using the DC-60 accelerator at the Astana branch of the Institute of Nuclear Physics in Kazakhstan

Science grants:

2003-2005 "To conduct spectroscopic studies of the mechanisms of formation of point defects and their microstructure in ion-dielectric systems with a change in the symmetry of the lattice".

2006-2008 "Control of the luminescent properties of wide-band materials with a limited dimensionality when the lattice symmetry is lowered".

2009-2011 "Investigation of the properties of nanostructured radiation defects in ion-dielectric materials with a decrease in lattice symmetry over a wide temperature range".

2012-2014 "Development of a technology for controlling the physical properties of alkali-halide and superconducting materials with a decrease in lattice symmetry".

2013-2015 "Technology of accumulation of electricity based on alkali-halide crystals with a decrease in lattice symmetry".

2015-2017 "Technology of controlling the mechanism of energy transformation of ionizing radiation in alkali-halide crystals-scintillators".

2015-2017 "Development of a technology for controlling the optical properties of oxides, fluorides and alkali-halide crystals with a decrease in lattice symmetry to produce materials with specified luminescent characteristics".

2020-2021 «Technology of enrichment of natural diatomite raw materials by electrohydraulic method».

2020-2022 «Directed impact on the radiative relaxation of electron excitations to improve the luminescence characteristics of functional materials based on alkali-halide crystals».

2020-2022 «Research of quantum-transport characteristics of nanosystems with unique operational electrical and magnetic properties».

2020-2023 «Experimental researches of luminescence mechanisms of KI, RbI, and CsI crystals under activation by cation-homologue and low-temperature deformation».

2020-2023 «Spectroscopic researches of functional materials based on perovskites and garnets doped with Ln2+, Ln3+, Ln4+».

2024-2026 «Experimental study of fundamental mechanisms increasing the luminescence yield of ionic crystals at room temperature».

2024-2026 «Ab-initio investigation on electronic and quantum transport properties of one-dimensional and two-dimensional vander-Waals nanoheterodevices based on transition metal dichalcogenides».

2025-2027 «Study of the physical principles of obtaining scintillation crystals with specified physical, chemical and luminescent properties based on alkali halide and oxide compounds doped with isoelectronic impurities»

Contract work:

In 2015, a contractual work was carried out with National Laboratory Astana on the theme "Development of a technology for compiling a modern geological map for diatomite resources in the Aktobe region of the Mugalzhar district (“Zhalpak” area).

In 2019, a contractual work was carried out with Yanka Kupala State University of Grodno to measure dependence of luminescence spectra of thioflavin T and its derivatives in polymeric films on temperature.

Theses:

On the basis of the scientific center, one doctoral (Shunkeyev K.Sh.), eight candidate (Sarmukhanov E.T., Bekeshev A.Z., Tulepbergenov S.K., Sagimbayeva Sh.Zh., Myasnikova L.N., Barmina A.A., Sergeyev D.M., Bizhanova K.B.), five PhD dissertations (Zhanturina N.N., Aimaganbetova Z.K., Ubayev Zh.K., Maratova А.G., Duisenova А.G.).

PERSONNEL TRAINING
Master's programme

The scientific management of dissertations of masters of the 7M01502-Physics and 7M05301-Physics educational programs is conducted.

Doctoral studies

The scientific management of dissertations of doctoral students of the 8D05301-Physics educational program is conducted.

Dissertational Council

1. Shunkeyev Kuanyshbek Shunkeyevich - Doctor of Physical and Mathematical Sciences, Professor (Chairman of Dissertation Council);
2. Daulet Maksatovich Sergeyev - Candidate of Physical and Mathematical Sciences, professor at Military Institute of Air Defence Forces named after T. Begeldinov (vice chairman);
3. Sagimbayeva Shynar Zhanuzakovna - Candidate of Physical and Mathematical Sciences, associate Professor (Scientific Secretary);
4. Lissitsyn Victor Mikhailovich - Doctor of Physical and Mathematical Sciences, Professor, the National Research Tomsk Polytechnic University (Russia);

Photo after the defense of the PhD dissertation by A.G. Duisenova. 26.05.2024

Scopus information:

• Scopus information:

• Dr.Sci., professor K.Sh. Shunkeyev

• Cand.Sci., professor D.M. Sergeyev

• PhD, associate professor N.N. Zhanturina

• Cand.Sci., associate professor Sh.Zh. Sagimbayeva

• Cand.Sci., associate professor L.N. Myasnikova

• PhD, associate professor Z. K. Aimaganbetova

• PhD, senior lecturer Zh.К. Ubaev

• PhD, senior lecturer А.G. Дуйсенова

• M.Sc., lecturer А.S. Istlyaup

• M.Sc., PhD student А.А. Kenzhebayevа

   

Publications:

Results of researches were published in the following foreign journals:

• «Solid State Physics»
• «Journal of Luminescence»
• «Journal of Physics: Condensed Matter»
• «Radiation Measurements»
• «Crystals»
• «Journal of Applied Spectroscopy»
• «Inorganics»
• «Low Temperature Physics»
• «Journal of Physics: Conference Series»
• «Eurasian Journal of Physical and Functional Materials»
• «Latvian Journal of Physics and Technical Sciences»
• «Nuclear Instruments and Methods in Physics Research»
• «Journal of Nano- and Electronic Physics»
• «International Journal of Nanoscience»
• «Results in Physics»

Patents:

1. Shunkeyev K.Sh., Sarmukhanov E.T., Bekeshev A.Z. and Sagimbayeva Sh.Zh. (2003)
Cryostat for deforming crystals in a wide temperature range (80–500 K).
Pre-patent of the Republic of Kazakhstan No. 14831, published on March 25, 2003, No. 2003/0399.1.

2. Shunkeyev K.Sh., Sarmukhanov E.T., Bekeshev A.Z. and Sagimbayeva Sh.Zh. (2003)
Method for enhancing the intrinsic luminescence of alkali halide crystals.
Pre-patent of the Republic of Kazakhstan No. 14383, published on July 8, 2003, No. 2003/0937.1.

3. Shunkeyev K., Barmina A., Sarmukhanov E. and Bizhanova K. (2012)
A universal cryostat for recording absorption spectra of crystals at low temperature under the influence of deformation and radiation.
Patent of the Republic of Kazakhstan No. 26141, application No. 2010/0304.1, Bull. No. 9 of September 14, 2012.

4. Shunkeyev K., Nurmagambetov A., Barmina A., Myasnikova L.N., Sergeyev D. and Zhanturina N. (2014)
A universal cryostat for registering low-temperature ionic conductivity and thermally stimulated depolarization currents in deformed and irradiated crystals.
Innovative patent for an invention of the Republic of Kazakhstan No. 28731, Bull. No. 7, July 15, 2014.

5. Shunkeyev K., Sergeyev D., Myasnikova L.N., Barmina A. and Aimaganbetova Z.K. (2016)
A method for determining low-temperature vacancy dipole defects in alkali halide crystals by means of thermally stimulated depolarization.
Patent for an invention of the Republic of Kazakhstan No. 31799, published on December 30, 2016 (G01N 27/00).

6. Shunkeyev K., Myasnikova L., Barmina A., Sergeyev D., Zhanturina N. and Sagimbayeva Sh. (2018)
A method for enhancing the luminescence of KCl crystals by activating with light cations Na.
Patent for an invention of the Republic of Kazakhstan No. 33327, published on November 30, 2018.

7. Shunkeyev K.Sh., Grinberg M., Zhanturina N.N., Barmina A.A. and Myasnikova L.N. (2019)
A method for enhancing the luminescence of La₂O₂S crystals by activating with rare-earth ions and applying high hydrostatic compression.
Patent for an invention of the Republic of Kazakhstan No. 33557, published on March 29, 2019.

8. Shunkeyev K.Sh., Bekeshev A.Z., Kurmanbayev A.Sh., Myasnikova L.N. and Zhubanyshova M. (2019)
Bar soap with diatomite.
Utility model patent of the Republic of Kazakhstan No. 4336, published on October 1, 2019.

9. Shunkeyev K.Sh., Myasnikova L.N., Sagimbayeva Sh.Zh., Ubaev Zh.K., Litskevich A.Yu. and German A.E. (2021)
A method for recording spectra of thermally stimulated luminescence in alkali halide crystals.
Patent for an invention of the Republic of Kazakhstan No. 34978, published on April 2, 2021.

10. Shunkeyev K.Sh., Myasnikova L.N., Sagimbayeva Sh.Zh., Zhanturina N.N., Aimaganbetova Z.K., Ubaev Zh.K. and Maratova A.G. (2021)
A method for influencing the exciton free path length in alkali halide crystals.
Utility model patent of the Republic of Kazakhstan No. 5978, published on April 9, 2021.

11. Sagimbayeva Sh.Zh., Shunkeyev K.Sh., Zhanturina N.N., Myasnikova L.N., Aimaganbetova Z.K. and Istlyaup A.S. (2021)
A diatomite and aloe mask-scrub.
Utility model patent of the Republic of Kazakhstan No. 6137, published on June 11, 2021.

12. Tarkovsky V., Shunkeyev K.Sh., Sagimbayeva Sh.Zh., Myasnikova L.N. and Tastanova L.K. (2021)
An electrohydraulic method for enriching diatomite.
Utility model patent of the Republic of Kazakhstan No. 6260.

13. Sagimbayeva Sh.Zh., Shunkeyev K.Sh., Maratova A.G. and Myasnikova L.N. (2021)
A method for synchronous registration of the temporal and spectral dependence of tunnel luminescence intensity in alkali halide crystals.
Utility model patent of the Republic of Kazakhstan No. 6563, published on October 22, 2021.

14. Shunkeyev K.Sh., Sagimbayeva Sh.Zh., Tlep A.S. and Ubaev Zh.K. (2022)
A method for concentration-stimulated enhancement of luminescence in KCl–Na crystals.
Utility model patent of the Republic of Kazakhstan No. 7646, published on June 9, 2022.

15. Shunkeyev K.Sh., Sagimbayeva Sh.Zh. and Tlep A.S. (2022)
A method for enhancing the luminescence of KCl crystals.
Utility model patent of the Republic of Kazakhstan No. 7073, published on May 6, 2022.

16. Zhanturina N.N. (2023)
A method for obtaining lanthanum aluminum perovskite doped with cerium.
Utility model patent of the Republic of Kazakhstan No. 8216, published on June 30, 2023.

17. Shunkeyev K.Sh., Sagimbayeva Sh.Zh. and Ubaev Zh.K. (2024)
A deformation-based method for increasing the yield of exciton-like luminescence in the sodium field of potassium chloride monocrystals.
Utility model patent of the Republic of Kazakhstan No. 9299, published on June 28, 2024.

18. Shunkeyev K.Sh., Sagimbayeva Sh.Zh., Myasnikova L.N., Aimaganbetova Z.K., Ubaev Zh.K., Istlyaup A.S., Kenzhebayeva A.A. (2025)
A method for increasing the intensity of high-temperature peaks of thermally stimulated luminescence of a NaCl crystalline matrix.
Utility model patent of the Republic of Kazakhstan No.  12372, published on January 16, 2026.

Authorial certificates:
2021

1. Maratova A.G., Shunkeyev K.Sh., Myasnikova L.N. and Ubaev Zh.K. (2020)
“Digital technology for recording photoluminescence, X-ray luminescence, tunnel luminescence, and thermally stimulated luminescence spectra of alkali halide crystals.”
Author’s certificate No. 12826, dated October 26, 2020.

2. Maratova A.G., Shunkeyev K.Sh., Myasnikova L.N. and Ubaev Zh.K. (2020)
“Digital technology for scanning integral tunnel luminescence and thermally stimulated luminescence of alkali halide crystals.”
Author’s certificate No. 12980, dated November 3, 2020.

Prizes and stipends:

• The Satpayev Prize of the Ministry of Education and Science of the Republic of Kazakhstan – 2004 (Shunkeyev K. Sh, Sarmukhanov E.T., Bekeshev A.Z., Sagimbayeva Sh, Tulepbergenov S.K.)
• State scientific scholarship of the Ministry of Education and Science of the Republic of Kazakhstan (Shunkeyev K.Sh., Sergeyev D.M.)
• State scientific scholarship of the Ministry of Education and Science of the Republic of Kazakhstan for young scientists (Sergeyev D.M, Barmina A.A.)
• Prize of mayor of Aktobe region (Barmina A.A., Myasnikova L.N.)
• «The Best Young scientist of Aktobe region» (Myasnikova L.N., Zhanturina N.N., Sergeyev D.M., Barmina A.A.)
• «The Best Scientist» (Sergeyev D.M.)
• «The Best Teacher of Higher Educational Institution» (Shunkeyev K.Sh, Zhanturina N.N., Myasnikova L.N., Sagimbayeva Sh.Zh., Bekeshev A.Z., Aimaganbetova Z.K.)

Monographs, collections of works and textbooks:

Шункеев К.Ш. Релаксация электронных возбуждений в щелочногалоидных кристаллах при понижении симметрии решетки. – Актобе, 2008. – 436 с.

Шункеев К.Ш. Люминесценция и радиационные дефекты в щелочногалоидных кристаллах при понижении симметрии решетки. – Актобе, 2012. – 516 с.

Сергеев Д.М. Ангармонизм сверхпроводящего тока в джозефсоновских структурах. – Актобе, 2012.

Мясникова Л.Н. Люминесценция и экситон-фононное взаимодействие в щелочногалоидных кристаллах при низкотемпературной деформации». – Актобе, 2016. – 140 с.

Сагимбаева Ш.Ж. Технология управления механизмом трансформации энергии ионизирующей радиации в щелочногалоидных кристаллах-сцинтилляторах. – Актобе, 2017. – 120 с.

Бармина А.А. Люминесценция и радиационное дефектообразование в щелочногалоидных кристаллах-сцинтилляторах при понижении симметрии решетки. – Актобе, 2017. – 136 с.

Zhanturina N.N. The influence of temperature, deformation and cationic impurities on luminescent properties of alkali halide materials. – Aktobe, 2018.

Шункеев К.Ш., Grinberg M., Szczodrowski K., Mahlik S., Жантурина Н.Н., Мясникова Л.Н., Бармина А.А., Сагимбаева Ш.Ж. Сборник материалов по разработке технологии управления оптическими свойствами оксидов, фторидов и щелочногалоидных кристаллов при понижении симметрии решетки. – Актобе, 2017. – 112 с.

Жантурина Н.Н. Конденсиаланған күй физикасы: Оқу құралы. Ақтөбе: Қ.Жұбанов атындағы Ақтөбе өңірлік мемлекеттік университеті, 2017. – 140 б.

Zhanturina N., Myasnikova L. Fundamentals of mechanics: educational-methodical workbook. – Aktobe, 2018. – 105 p.

Shunkeyev K., Myasnikova L., Zhanturina N., Tilep A., Zinollin Zh. English-Kazakh-Russian dictionary of physical terms. – Aktobe, 2018. – 171 p.

Myasnikova L.N. Electricity and magnetism: educational-methodical workbook. – Aktobe, 2019. – 112 p.

Zhanturina N. Molecular physics. – Aktobe: Zhubanov Aktobe Regional State University, 2020. – 100 p.

Аймаганбетова З.К. Сілтілігалоидты материалдардағы деформациялық люминесценция және радиациялық ақаулар, Ақтөбе. – 2021.

Сергеев Д.М. Особенности электронного транспорта в одноэлектронных наноструктурах. – Актобе, 2022.

Physics textbooks with updated content for grades 10-11 of natural-mathematical and social-humanities direction are prepared.

Р. Башарулы, Шункеев К. Ш., Л.Н.Аубакиров, Н.Н.Жантурина, Бармина А. А., З. Аймаганбетова. – Алматы: Атамұра, 2020.

Main results:

1. Experimental installation methods based on absorption, luminescence spectroscopy and thermally activated, and the ionic conductivity and the thermally stimulated depolarization currents for investigating the nature and mechanisms of luminescence radiation defects in alkali halide crystals with decreasing lattice point defects uniaxial plastic and elastic deformation.
2. Made and patented a unique cryostat, allowing the crystal to deform at low temperatures in high technical vacuum mode and record their luminescence, absorption and thermal activation characteristics, and ionic conductivity and thermally stimulated depolarization currents.
3. The first detected and interpreted intensity enhancement effect of self-localized excitons in AHC elastic deformation at low temperature, based on which a new method of enhancing the intrinsic luminescence of alkali halide crystal without transforming excitation energy of an impurity to find modern scintillation counters.
4. The observed effect of intensifying the intrinsic luminescence of alkali-halide crystals is patented in the Republic of Kazakhstan. Registration number number 14383.
5. On the basis of the registration of thermally stimulated depolarization currents crystals cations activated light-polarizing currents homologues found that a reorientation of the dipole defects interpreted widely applicable to DC electricity storage.
6. The mechanism effectively create Х_3^--centers in the association of interstitials halogen by reducing local symmetry lattice AHC-field light homologues cation vacancy defects plastic deformation and elastic deformation of the low temperature voltage.
7. A new physical principle of assembling electron-hole pairs based on crystals activated with light impurities of sodium, substantially improving the scintillation characteristics of alkali-halide crystals, is applied in industry.
8. By the methods of silicate, spectrophotometric, X-ray diffraction, X-ray spectral, chemical, electron microscopic analyzes, the composition of diatom rocks by the area "Zhalpak" was studied. According to the results of studies, the value of the concentration of silica in natural diatomite is determined, which varies from 72.69% to 78.14%, which indicates the uniformity of diatomaceous rocks.
9. On the basis of scientific center "Radiation Physics of materials" for the technique of absorption spectra (maximum at 305 ÷ 335 nm), amorphous silicon (diatomite), and three oxidic components SiO2, Al2O3 and Fe2O3 using modern spectrophotometer «Evolution 300".

Material and technical base

Experimental installation for luminescence spectroscopy

A multifunctional spectral complex scans spectra using a high-power monochromator MSD-2 and a photomultiplier tube type H 8259 by «Hamamatsu» operating in the photon counting mode controlled by special programmes SpectraScan and ThermoScan in a wide interval of spectrum 200÷850 nm and temperatures 85÷400 K subject to uniaxial deformation (ε=0.1÷1.2%) under high technical vacuum.

Based on digital technology under low temperature deformation the following spectral characteristics of AHC are registered:

• luminescence by X-ray (LXR),
• tunnel luminescence (TL),
• Thermal stimulated luminescence (TSL),
• time scan of tunnel luminescence,
• TSL spectra.

Scanning speed of spectra: 50, 25, 10, 5, 1 nm/s.

Irradiation of crystals is carried out from X-ray installation RUP-120 in mode 3 mA, 120 kW..

Cryostat for the deformation of crystals at 80÷500 K is patented in the Republic of Kazakhstan

The cryostat allows measurement of luminescence-absorption characteristics of crystals (spectra of absorption, excitation, emission, X-ray luminescence, thermal stimulated luminescence, tunnel luminescence, thermal stimulated depolarization of currents and ionic conductivity) as before deformation and under the action of elastic and plastic deformation of various degrees (0 ≤ ε ≤ 10%) in a wide temperature range (80÷500 K).

The degree of deformation of the crystal (6) in the cryostat is given by the step of the compressing screw (7) and is determined by the following formula:

where l0 is the initial length of the crystal before deformation, which is measured by micrometer or microscope, l is the length of the crystal after deformation.

The step of the compression screw (7) is 1 mm. This means that the crystal is deformed by 1 mm (Δ l = 1 mm) when the compression screw is turned completely.

The construction of the cryostat makes it possible to determine experimentally from a given degree of relative deformation of the crystal (e.g. ε = 0.5%, 1.0%, 1.5%, etc.)

For example, for deformation to ε = 1.0 % of NaCl crystal with length – l0 =8 mm, necessary value – = 0.08 which is set by the calibration curve, by turning the crystal holder from point (place) of contact fixation by 2 cm (L=2 cm).

Thermoluminescent dosimetry system

The Harshaw 3500 model is a modern reader designed to measure the light output of thermoluminescent elements. This system is intended for recording and analyzing high-temperature luminescent properties. Through the study of thermally stimulated luminescence (TSL), it allows researchers to characterize the thermal stability of materials and recombination processes.

The system uses a contact heating method for thermal excitation. A feedback control system integrated into the heating planchet ensures precise temperature regulation with an accuracy of ±1 ºC. The registration temperature range is 295–873 K (approximately 22–600 ºC), and the heating rate can be set between 1 and 10 ºC/s. By adjusting the heating rate, one can monitor the temporal distribution of luminescent signals, aiding in the identification of various types of defects.

The WinREMS software automates the measurement process and enables the processing, analysis, and storage of the acquired TSL glow curves. The system also includes a highly stable LED reference light source integrated into the photomultiplier tube (PMT) module. This reference signal can be read by the operator at any time, even during active measurements.

Experimental installation on thermal activation spectroscopy

The installation makes it possible to record ion conductivity and thermostimulated depolarization currents of crystals in a wide temperature range from 196°С to 350°С in the combination of a specialized cryostat that performs the regime of temperature and low-temperature deformation. The installation is assembled on the basis of the standard vacuum unit VUP-4. The level of technical vacuum is achieved by two steps: forvacuum pumping up to 10⁻² Торр and then - diffusion pump up to 10⁻⁵ Torr.

In the current spectra of thermos-stimulated depolarization of alkali halide crystals, polarization currents of dipole defects are detected. Such a method for recording the polarization dipole currents of alkali-earth metals in a wide temperature range (80÷500 К) after the action of plastic deformation creating a divacancy is designed as an application for an invention.

The technical result achieved in the present invention is a method for recording polarization dipole defects in alkali-halide crystals and determining their maximum disorientation temperature from the peaks of the current spectrum of thermally stimulated depolarization performed by linear heating of the crystal in the temperature range from 80K to 500 K.

Thus, the experimental setup makes it possible to register the ionic conductivity and thermally stimulated depolarization currents in a wide temperature range (80-500 K) of dielectric materials, which are alkali-halide crystals.

Experimental installation of luminescent spectroscopy based on the SDL-2 spectral complex

Spectral complex by luminescence spectroscopy based on SDL-2 with two sources of excitation (photo- and X-ray) using exciting monochromator MDR-12 and registering monochromators MDR-23 (MSD-2) allows realizing for automatic registration of spectra of all types of luminescence of AHC in the photon-counting mode using PhEM of the company of «Hamamatsu» in a wide interval of spectrum.

For solving these problems, a continuous light source is used - xenon lamp AXBL-150, emitting a continuous spectrum from 200 nm to 850 nm. The reliability of scanning the luminescence spectra of the AHC directly depends on the light source, which provides an intense and stable luminous flux.

For this purpose, the xenon lamp, which is part of the standard spectral complex, was replaced with a Hamamatsu EQ-99X LDLS laser source, emitting a highly stabilized and intensive luminous flux in the spectral range of 170-2100 nm, to ensure high-precision registration of the luminescent characteristics of the AHC.

Two types of ionizing radiation sources are provided in the spectral complex - ultraviolet light (S) with photon energy, corresponding to the excitation of anionic excitons in the AHC and X-ray radiation.

Spectral complex in the spectral range from 180 nm to 1200 nm with a replaceable diffraction grating allows to record the spectra of optical absorption, excitation and radiation of substances (crystals, liquids and gases) and to trace the kinetics of these spectra in time.

Experimental installation for absorption spectroscopy

The automatic recording spectrophotometer allows analyzing the transmission and optical absorption spectra of substances (crystals, liquids, and gases) in the spectral range - 190-900 nm (6.5-1.4 eV). The device is equipped with a two-beam optical scheme in contrast to standard spectrophotometers. The built-in computer program provides scanning of spectra in a given spectral interval with different speeds and allows the development of time kinetics. It should be noted the peculiarity of the device that the optical density of substances is registered up to 4 units, when the existing analogous devices have only up to 1.4.

Innovative Electrohydraulic systems KID 21

The installation realizes a controlled high-voltage source with a storage capacitor that is cyclically discharged through special electrodes placed in a liquid medium. For creating the device, scientists of the Faculty of Physics and Technology have solved a number of problems to project and manufacture, on the modern element base of the electrical circuit of the device capable of withstanding pulsed currents of hundreds of kiloamperes for a long time, which occur when the storage capacitor is discharged.

One of the main directions of using the plant by the customer is the elaboration of an electrohydraulic method for enrichment diatomite raw materials, the essence of which is the conclusion of ore fractions using the energy of a plasma that occurs during a short and very powerful electric discharge in a liquid medium.

Across International CGF3.1200F.60-100 Crystal Growth System (USA)

A modern automated crystal growth system manufactured by Across International (USA), designed for growing single crystals using the Bridgman method at temperatures up to 1200 °C. The system enables deep vacuum purification of starting materials, zone recrystallization, and the growth of high-purity single crystals in a controlled inert gas atmosphere. The digitally controlled three-zone furnace provides precise regulation of the temperature profile and crystal growth rate.

The key advantage of this system lies in its ability to integrate several stages of the technological process into a single platform, incorporating specialized solutions for the growth of complex materials. This opens up new opportunities for research in solid-state physics, radiation materials science, and the development of functional optical materials.

Computer Park

The computational modeling of processes in the HPC system is carried out on a Supermicro server. For this purpose, Supermicro-X11 series motherboards and Intel Xeon Gold-6130 processors are used. These processors are designed for cloud computing applications, including data centers, high-performance computing (HPC), high-end workstations, and storage networks.

The system enables the execution of complex calculations, efficient management of parallel processes, and the handling of large volumes of simulation data. As a result, the accuracy and reliability of numerical modeling of physical processes occurring in the HPC system are significantly enhanced.