EDUCATIONAL AND SCIENTIFIC MICROTRON LABORATOR
In the educational and research microtron laboratory of Uzhhorod National University, there are three basic experimental setups - electron accelerators.
- The Betatron B-25 accelerates an internal electron beam to a maximum energy of 25 MeV. The beam energy can be smoothly adjusted in the range of Ee=11-25 MeV, with an energy spread of electrons in the beam on the order of ΔEe=200 keV. Inside the target, the electron beam is converted into a bremsstrahlung beam of gamma rays, which is extracted from the accelerator chamber. The bremsstrahlung beam of gamma rays is utilized for conducting scientific and applied research.
- The Microtron M-10 accelerates electrons within the energy range of Ee=6-10 MeV, with a similar energy spread of ΔEe=20 keV. The accelerated electron beam is extracted externally, allowing for irradiation of test samples with electrons or with a bremsstrahlung target, generating bremsstrahlung gamma rays. Additionally, through nuclear reactions in the accelerator, it is possible to generate neutrons.
The accelerator complex consisting of the Betatron B-25 and Microtron M-10 provides the capability to use electrons, bremsstrahlung gamma rays, and neutrons with different energies and particle intensities for irradiation purposes. The intensity of the Betatron beam is 100-1000 times lower than that of the Microtron beam. This setup enables research into the effects of irradiation on biological, medical, and other objects, both at low and high radiation doses.
3. In the microtron laboratory, there is also a strontium-yttrium radioisotope facility (SYRF), which was manufactured under a government contract in 1980 for long-term electron irradiation of electronic components used in the space industry. This facility utilizes 15 sources of the BIS-50 type with an activity of 1500 mCi and one BIS-30 source with an activity of 600 mCi, all located in the same plane. These sources are beta sources based on samples of the isotopes 90Sr-90Y. The source material contains two isotopes, one of which is a long-lived parent element with a relatively low beta energy spectrum, while the other is a short-lived daughter element with a relatively high energy spectrum. Irradiation of samples can occur simultaneously at different fixed flux densities ranging from 108 particles/cm²s at a distance of 25-30 cm from the source to 105 particles/cm²s at a distance of 300 cm from the source over an extended period, depending on the required dose. Research has been conducted on the effects of electron irradiation on magnetic fluids in collaboration with the Institute of Experimental Physics in Kosice, Slovakia.
The main directions of activity of the educational and research microtron laboratory include:
1. Conducting fundamental scientific research in the field of experimental nuclear physics.
2. Research into photoduclear reactions.
3. Investigation of heavy nucleus fragmentation under the influence of gamma rays.
4. Study of the radiation resistance of materials and crystals.
5. Research on the radiation effects of various types of irradiation on biological structures.
6. Determination of the chemical composition of substances using nuclear-physical methods.
7. Radiation ecology and environmental monitoring.
8. Utilizing experimental techniques for modeling nuclear-physical processes in nuclear and elementary particle theory.
9. Publishing research results (except in cases involving confidentiality) at conferences, seminars, and in scientific publications.
10. Providing personnel, material, technical, and informational support for educational activities and scientific research.
11. Using accelerators for educational purposes.
12. Implementing the results of scientific research into the educational process.
The main functions of the educational and research microtron laboratory are as follows:
1. Providing scientists with the opportunity to conduct research on scientific equipment.
2. Offering advisory services regarding the conduct of scientific research.
3. Performing necessary preparatory work for the irradiation of test samples while ensuring compliance with radiation safety norms and conditions.
4. Organizing and conducting laboratory educational sessions.
5. Training scientific and scientific-educational personnel, as well as offering internships for students and research staff on the laboratory's equipment.
6. Involving students, graduate students, doctoral students, and academic staff from the University in the execution of research projects with compensation and on a collaborative basis.
7. Carrying out state-funded, government contract, and international scientific agreements, as well as work funded by international research grants.
8. Collecting and summarizing the results of scientific research in line with the laboratory's focus.
9. Organizing the maintenance of a database of research results.