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29 results on '"VAKHTIN, D. N."'

5. Fine structure in fragment mass-energy distribution from 238U+40Ar (275 MeV)

Author

Trzaska, W. H., Pyatkov, Yu. V., Penionzhkevich, Yu. E., Maslov, V. A., Osetrov, O. I., Alexandrov, A. A., Alexandrova, I. A., Äystö, J., Brinkmann, K.-Th., Khlebnikov, S. V., Kushniruk, V. F., Kuznetsov, A. V., Lyapin, V. G., Mutterer, M., Radivojevich, Z., Rubchenya, V. A., Sobolev, Yu. G., Tishchenko, V. G., Tiourine, G. P., Vakhtin, D. N., Äystö, Juha, editor, Dendooven, Peter, editor, Jokinen, Ari, editor, and Leino, Matti, editor

Published
2003
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14. SHELL EFFECTS IN FUSION-FISSION OF HEAVY AND SUPERHEAVY NUCLEI

Author

ITKIS, M. G., primary, BOGATCHEV, A. A., additional, ITKIS, I. M., additional, JANDEL, M., additional, KLIMAN, J., additional, KNIAJEVA, G. N., additional, KONDRATIEV, N. A., additional, KORZYUKOV, I. V., additional, KOZULIN, E. M., additional, KRUPA, L., additional, OGANESSIAN, YU. TS., additional, POKROVSKY, I. V., additional, PROKHOROVA, E. V., additional, VOSKRESENSKI, V. M., additional, ZAGREBAEV, V. I., additional, RUSANOV, A. YA., additional, CORRADI, L., additional, GADEA, A., additional, LATINA, L., additional, STEFANINI, A. M., additional, SZILNER, S., additional, TROTTA, M., additional, VINODKUMAR, A. M., additional, BEGHINI, S., additional, MONTAGNOLI, G., additional, SCARLASSARA, F., additional, ÄYSTÖ, J., additional, KHLEBNIKOV, S. V., additional, RUBCHENYA, V. A., additional, TRZASKA, W. H., additional, VAKHTIN, D. N., additional, GOVERDOVSKI, A. A., additional, HANAPPE, F., additional, MATERNA, T., additional, DORVAUX, O., additional, ROWLEY, N., additional, STUTTGE, L., additional, and GIARDINA, G., additional

Published
2003
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15. Detection of ‘Dirty Bombs' Using Nanosecond Neutron Analysis (NNA) Technique.

Author

Apikyan, Samuel, Diamond, David, Way, Ralph, Evsenin, A. V., Gorshkov, I. Yu., Kalinin, V. A., Kuznetsov, A. V., Osetrov, O. I., Vakhtin, D. N., and Yurmanov, P. D.

Abstract

Application of the nanosecond neutron analysis (NNA) to the detection of radiological dispersal devices (RDD) or ‘dirty bombs' is considered. A prototype of the mobile device for detection of ‘dirty bomb' is described. Results of preliminary tests are discussed. [ABSTRACT FROM AUTHOR]

Published
2008
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17. FISSION TIME DISTRIBUTIONS IN FUSION-FISSION REACTIONS

Author

RUBCHENYA, V. A., primary, ALEXANDROV, A. A., additional, ALKHAZOV, I. D., additional, ÄYSTÖ, J., additional, EVSENIN, A., additional, KHLEBNIKOV, S. V., additional, KUZNETSOV, A. V., additional, LYAPIN, V. G., additional, MUTTERER, M., additional, PENIONZHKEVICH, YU. E., additional, OSETROV, O. I., additional, RADIVOJEVICH, Z., additional, SOBOLEV, YU. G., additional, TIOURIN, G. P., additional, TRZASKA, W. H., additional, and VAKHTIN, D. N., additional

Published
2002
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18. LATEST RESULTS FROM HENDES COLLABORATION: FINE STRUCTURE IN FRAGMENT MASS-ENERGY DISTRIBUTION

Author

TRZASKA, W. H., primary, PYATKOV, YU. V., additional, PENIONZHKEVICH, YU. E., additional, MASLOV, V. A., additional, OSETROV, O. I., additional, ALEXANDROV, A. A., additional, ALEXANDROVA, I. A., additional, ÄYSTÖ, J., additional, BRINKMANN, K. -TH., additional, KHLEBNIKOV, S. V., additional, KUSHNIRUK, V. F., additional, KUZNETSOV, A. V., additional, LYAPIN, V. G., additional, MUTTERER, M., additional, RADIVOJEVICH, Z., additional, RUBCHENYA, V. A., additional, SOBOLEV, YU. G., additional, TISHCHENKO, V. G., additional, TIOURINE, G. P., additional, and VAKHTIN, D. N., additional

Published
2002
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19. DEUTERON INDUCED FISSION OF 238U.

Author

TRZASKA, W. H., RUBCHENYA, V. A., VAKHTIN, D. N., ALKHAZOV, I. D., EVSENIN, A., KHLEBNIKOV, S. V., KUZNETSOV, A. V., LYAPIN, V. G., RADIVOJEVICH, Z., TURIN, G. P., AYSTO, J., ALEXANDROV, A. A., PENIONZHKEVICH, YU. E., VON KALBEN, J., MUTTERER, M., and BRINKMANN, K-T.

Subjects
NEUTRONS, ATOMS, DEUTERON scattering, FISSION neutrons, FISSION products
Published
2000

20. FISSION MODES IN 238U + d REACTION AT INTERMEDIATE ENERGY.

Author

Rubchenya, V. A., Alexandrov, A. A., Alkhazov, I. D., Aystö, J., Brinkmann, K.-T., Evsenin, A., Khlebnikov, S. V., Kuznetsov, A. V., Lyapin, V. G., Mutterer, M., Penionzhkevich, Yu. E., Osetrov, O. I., Radivojevich, Z., Saint-Laurent, M.-G., Sobolev, Yu. G., Tjurin, G. P., Trzaska, W. H., and Vakhtin, D. N.

Subjects
NUCLEAR fission, PROTON spectra, NEUTRONS spectra, DEUTERONS, RADIOACTIVE nuclear beams, STRIPPING reaction (Nuclear physics), SPECTRUM analysis
Published
2000

21. Fission time scale and viscosity for compound nucleus220Thformed in reaction40Ar+180HfatElab=180,190, 216, and 249 MeV

Author

Rubchenya, V. A., primary, Kuznetsov, A. V., additional, Trzaska, W. H., additional, Vakhtin, D. N., additional, Alexandrov, A. A., additional, Alkhazov, I. D., additional, Äystö, J., additional, Khlebnikov, S. V., additional, Lyapin, V. G., additional, Osetrov, O. I., additional, Penionzhkevich, Yu. E., additional, Pyatkov, Yu. V., additional, and Tiourin, G. P., additional

Published
1998
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22. Fission product yields at intermediate energy

Author

Rubchenya, V. A., primary, Äystö, J., additional, Dendooven, P., additional, Hankonen, S., additional, Jokinen, A., additional, Trzaska, W. H., additional, Vakhtin, D. N., additional, Wang, J. C., additional, Evsenin, A. V., additional, Khlebnikov, S. V., additional, Kuznetsov, A. V., additional, Lyapin, V. G., additional, Osetrov, O. I., additional, Tiourin, G. P., additional, Aleksandrov, A. A., additional, and Penionzhkevich, Yu. E., additional

Published
1998
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23. HENDES-high efficiency neutron detection system for correlation measurements with HI beams

Author

Trzaska, W. H., primary, Rubchenya, V. A., additional, Alexandrov, A. A., additional, Alkhazov, I. D., additional, Äystö, J., additional, Von Kalben, J., additional, Khlebnikov, S. V., additional, Kuznetsov, A. V., additional, Lyapin, V. G., additional, Makarenko, V. E., additional, Moltchanov, Yu., additional, Mutterer, M., additional, Ossetrov, O. I., additional, Otroshtchenko, G., additional, Ortlepp, H.-G., additional, Penionzhkevich, Yu. E., additional, Pyatkov, Yu. V., additional, Tiourine, G. P., additional, and Vakhtin, D. N., additional

Published
1997
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27. Pre- and post-scission neutron emission in the reaction <SUP>180</SUP>Hf(<SUP>40</SUP>Ar, fission) at E<SUB>lab</SUB> = 216 MeV

Author

Kuznetsov, A. V., Rubchenya, V. A., Vakhtin, D. N., Lyapin, V. G., Alkhazov, I. D., Khlebnikov, S. V., Osetrov, O. I., Tiourin, G. P., Trzaska, W. H., and Äystö, J.

Abstract

Neutron and fission fragment spectra following the 180Hf(40Ar,f) reaction at Elab=216MeV were measured. The following neutron total, pre- and post-scission multiplicities were extracted: Mtotn=7.21.3, Mpren=2.7 0.9, Mpostn=4.50.9. The average temperature parameters of the neutron spectra are T pre=(1.630.16) MeV and T post=(1.140.26) MeV. The mean total kinetic energy of the fission fragments is TKE=(16610) MeV and the measured width is TKE=17.3MeV. The width of the fragment mass distribution is A=18.3u. The same reaction was analyzed using a modified statistical code which includes nuclear dissipation effects and particle and -ray emission in the equilibrium compound nucleus state and saddle-to-scission transition. The extracted value of nuclear friction coefficient indicates overdamped large-scale fission motion. The obtained total fission time fiss=9 · 10-20s is in agreement with other existing data.

Published
1996
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29. Detection of buried explosives using portable neutron sources with nanosecond timing.

Author

Kuznetsov AV, Evsenin AV, Gorshkov IY, Osetrov OI, and Vakhtin DN

Subjects
Gamma Rays, Sensitivity and Specificity, Spectrometry, Gamma methods, Warfare, Blast Injuries prevention & control, Explosions prevention & control, Neutrons, Soil, Spectrometry, Gamma instrumentation
Abstract

Significant reduction of time needed to identify hidden explosives and other hazardous materials by the "neutron in, gamma out" method has been achieved by introducing timed (nanosecond) neutron sources-the so-called nanosecond neutron analysis technique. Prototype mobile device for explosives' detection based on a timed (nanosecond) isotopic (252)Cf neutron source has been created. The prototype is capable of identifying 400 g of hidden explosives in 10 min. Tests have been also made with a prototype device using timed (nanosecond) neutron source based on a portable D-T neutron generator with built-in segmented detector of accompanying alpha-particles. The presently achieved intensity of the neutron generator is 5x10(7)n/s into 4pi, with over 10(6) of these neutrons being correlated with alpha-particles detected by the built-in alpha-particle detector. Results of measurements with an anti-personnel landmine imitator are presented.

Published
2004
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