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Your search keyword '"Yu. G. Teterev"' showing total 11 results
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11 results on '"Yu. G. Teterev"'

1. Ionization beam profile monitor for operation under hard environmental conditions

Author

Yu. G. Teterev, G. Kaminski, Phi Thanh Huong, and E. Kozik

Subjects
ionization beam profile monitor, heavy ion beams, beam profile diagnostic, on-line beam monitoring, th, Atomic physics. Constitution and properties of matter, QC170-197
Abstract

The design and the performance of the Ionization Beam Profile Monitor (IBPM) operating on the residual gas ionization principle are described. The main advantage of the constructed device is the non-contact measuring method. Operating under hard environmental conditions it delivers the information about the primary beam position, profile and intensity in “on-line” regime. It was tested under high gamma and neutron radiation conditions and changing vacuum using a range of low and intermediate energy beams at the beam current of a few nA to 15 μA. The diagnostic box was located in the vicinity of the accelerator, where the neutron flux was over 106 n/cm2s. It was found out that the device is capable to operate in vacuum in the range of 10-6÷10-3 mbar without the loss of the resolution power at the beam current as low as a few nA. The IBPM is prospective for beam profile monitoring due to long time. Emergency situations do not lead to decrease of its operability.

Published
2011

2. Analysis of production of forward-angle fragments in the 22Ne (40 AMeV) + 9Be reaction

Author

G. Kaminski, A. G. Artyukh, A. Budzanowski, B. Erdemchimeg, S. A. Klygin, G. A. Kononenko, E. Kozik, T. I. Mikhailova, Yu. M. Sereda, Yu. G. Teterev, M. Veselsky, and A. N. Vorontzov

Subjects
Atomic physics. Constitution and properties of matter, QC170-197
Abstract

A mechanisms of production of forward-emitted fragments in the 22Ne (40 АMeV) + 9Be reaction are investigated. Inclusive velocity and isotopic distributions of products with 3 ≤ Z ≤ 11 were measured on the fragment separator COMBAS. The contribution of direct processes and dissipative ones is presented. Gaussian fitting functions according to Goldhaber formalism has been used to estimate direct components of fragments velocity distributions. Experimental data have been compared to geometric incomplete fusion model predictions. Incomplete fusion model was the first time applied for light nuclei as in the studied reaction system. Overall agreement of simulations with experiment in description of velocity distributions have been achieved for fragments with atomic number close to the projectile mass and for stable isotopes. Discrepancies for other products are the result of transition from incomplete fusion to direct processes with collisions of clusters in the participant zone.

Published
2008

3. [Untitled]

Author

Yu. G. Teterev and A. G. Belov

Subjects
Chemistry, Radiochemistry, chemistry.chemical_element, Particle accelerator, Tungsten, Radiation, law.invention, Nuclear physics, Nuclear Energy and Engineering, law, Cathode ray, Physics::Accelerator Physics, Tungsten target, Neutron, Nuclear Experiment, Dose rate, Beam (structure)
Abstract

Experiments are performed to determine the isotopic composition of the induced activity of a tungsten target for a 10 MeV electron beam. The measurement results are used to calculate the dose rate from the induced activity of the target for an accelerator with 100 kW beam power. It is established that 187W radiation makes a substantial contribution to the dose rate. The neutron yield from the target and the flux density of neutrons scattered in the accelerator room are estimated.

Published
2001

4. Time projection chamber for experiments with heavy ions

Author

A. Semenov, A.A. Omelyanenko, Yu.A. Budagov, J. Spalek, A. G. Artukh, K. Holy, Yu G Teterev, E. Kladiva, V. Hlinka, M. Seman, V.A. Nikitin, Branislav Sitar, and Pavel P. Povinec

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Optics, Time projection chamber, Volume (thermodynamics), business.industry, Track (disk drive), Resolution (electron density), Detector, business, Image resolution, Ion
Abstract

Performance and characteristics of a large volume electronic track detector, time projection chamber (TPC), are described. The spatial resolution in the Z (vertical) direction is 0.2 mm, in the Y (horizontal) direction is 1 mm and the double track resolution in the Y- and Z-direction is 4.5 mm and 10 mm, respectively. A possible utilization of the TPC for experiments with heavy ions is discussed.

Published
1991

5. WIDE APERTURE MULTIPOLE MAGNETS OF SEPARATOR COMBAS

Author

G.F. Gridnev, S. E. Sytchevsky, N. F. Shilkin, M. G. Nagaenko, A. Semchenkov, Yu. M. Sereda, Yu. A. Myasnikov, O. V. Semchenkova, J. Szmider, F. Koscielniak, A. Yu. Konstantinov, V. V. Koreniuk, I. N. Vishnevski, V. Kukhtin, Yu. G. Teterev, A. G. Artukh, M. Grushezki, B. V. Rozhdestvenski, E.A. Lamzin, V. L. Vasiljev, Yu. P. Severgin, and V. Shchepunov

Subjects
Physics, Optics, business.industry, Magnet, Electrical engineering, business, Multipole expansion, Separator (electricity)
Published
2002

6. Resonant neutron filters in elemental analysis and radiography

Author

Yu. G. Teterev

Subjects
Materials science, business.industry, Radiography, Neutron stimulated emission computed tomography, Radiochemistry, Neutron diffraction, General Engineering, Neutron scattering, Small-angle neutron scattering, Nuclear physics, Nuclear Energy and Engineering, Elemental analysis, Neutron, Neutron reflectometry, business
Published
1989

8. Prospects for the development of neutron-activation analytical facilities based on powerful antimony-beryllium sources

Author

A. A. Sal'nikov, Yu. G. Teterev, Yu. V. Dyadin, Yu. N. Burmistenko, Yu. S. Zamyatnin, A. A. Medvedev, and G. N. Flerov

Subjects
Materials science, Nuclear Energy and Engineering, chemistry, Antimony, Nuclear engineering, General Engineering, Analytical chemistry, Neutron source, chemistry.chemical_element, Neutron, Beryllium, Neutron activation
Abstract

When using antimony-beryllium neutron sources for activation analysis of the composition of a substance, the problem of the analytical monitoring of many elements can be solved with a limit of determination of 10−3–10−5%. Based on the data obtained by the authors concerning the spatial distribution of the neutrons from a124Sb−Be-source in different moderators, a beryllium-graphite assembly with a powerful124Sb source has been designed, manufactured, and introduced into operation, for neutron-activation analysis.

Published
1982

9. Radiation environment of an MT-22 microtron

Author

Yu. G. Teterev

Subjects
Physics, business.industry, General Engineering, Bremsstrahlung, Neutron radiation, Nuclear physics, Lead shielding, Nuclear Energy and Engineering, Scintillation counter, Electromagnetic shielding, Neutron, Radiation protection, business, Microtron
Abstract

The authors present and analyze the results of full-scale measurements of the neutron and bremsstrahlung fields around the MT-22 microtron. Dose rates for neutron radiation and bremsstrahlung were measured both for the radiation emerging from the moderating target assembly impinged directly on the concrete shielding and for radiation emerging from the target assembly surrounded on three sides with lead shielding. The second case was found to provide the worst radiation protection; the moderating target was unprotected at the top while the lead itself served as a thick neutron converter. Bremsstrahlung was determined with a scintillation detector while neutron dose distributions were measured with a corona counter. Some activation reactions and their resulting radionuclides, generated in the irradiation of target and shielding materials, are given.

Published
1987

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