Search for Scission Neutrons Emitted in Low Energy Fission of Heavy Nucleus

被引：0

作者：

Petrov, G. A. ^{[1
]}

Vorobyev, A. S. ^{[1
]}

Sokolov, V. E. ^{[1
]}

Gagarski, A. M. ^{[1
]}

Guseva, I. S. ^{[1
]}

Shcherbakov, O. A. ^{[1
]}

Petrova, V. I. ^{[1
]}

Zavarukhina, T. A. ^{[1
]}

Val'ski, G. V. ^{[1
]}

Pleva, Yu. S. ^{[1
]}

Kuzmina, T. E. ^{[2
]}

机构：

[1] RAS, Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Reg, Russia

[2] VG Khlopin Radium Inst, St Petersburg 194021, Russia

来源：

4TH INTERNATIONAL WORKSHOP ON NUCLEAR FISSION AND FISSION-PRODUCT SPECTROSCOPY | 2009年 / 1175卷

关键词：

neutron induced fission; spontaneous fission; neutron spectrum; correlations; ANGULAR-CORRELATION; PROMPT NEUTRONS; DISTRIBUTIONS;

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

In accordance with the PNPI Program of the fast neutron emission mechanism investigations in low excitation energy fission of heavy nucleus, the energy and angular distributions of neutron emission and angular dependence of (n-n)- coincidences for different thresholds of neutron energy recording have been investigated in Cf-252(sf), U-233,U-235(n,f) and Pu-239(nf) fission. As a result of experimental data analysis performed on the assumption that the main part of neutrons are evaporated from the fully accelerated fragments with a big oriented angular momenta, the following figures for the yields of neutrons emitted before appearance of the fragments had been obtained for Cf-252(sf)) and thermal neutron induced fission of U-233,U- 235, and Pu-239: (10 +/- 2)%, (5 +/- 2)%, (7 +/- 2)%, and (10 +/- 2)% respectively.

引用

页码：289 / +

页数：2

共 22 条

[1] T-Odd angular asymmetry in nuclear reactions involving sequential particle emission
Barabanov, AL
Bunakov, VE
Guseva, IS
Petrov, GA
[J]. PHYSICS OF ATOMIC NUCLEI, 2003, 66 (04) : 679 - 683
[2] The mechanism of nuclear fission
Bohr, N
Wheeler, JA
[J]. PHYSICAL REVIEW, 1939, 56 (05): : 426 - 450
[3] DANILYAN G, 2000, PISMA EXP THEOR PHYS, V72, P859
[4] Facility for neutron multiplicity measurements in fission
Dushin, VN
Hambsch, FJ
Jakovlev, VA
Kalinin, VA
Kraev, IS
Laptev, AB
Nikolaev, DV
Petrov, BF
Petrov, GA
Petrova, VI
Pleva, YS
Shcherbakov, OA
Shpakov, VI
Sokolov, VE
Vorobyev, AS
Zavarukhina, TA
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 516 (2-3) : 539 - 553
[5] FLOCARD M, 1979, INT S PHYS CHEM FISS, V2, P387
[6] ANGULAR-CORRELATION OF NEUTRONS FROM THERMAL-NEUTRON FISSION OF U-235
FRANKLYN, CB
HOFMEYER, C
MINGAY, DW
[J]. PHYSICS LETTERS B, 1978, 78 (05) : 564 - 567
[7] Rotation of the compound nucleus 236U* in the fission reaction 235U(n, f) induced by cold polarised neutrons
Goennenwein, F.
Mutterer, M.
Gagarski, A.
Guseva, I.
Petrov, G.
Sokolov, V.
Zavarukhina, T.
Gusev, Yu.
von Kalben, J.
Nesvizhevski, V.
Soldner, T.
[J]. PHYSICS LETTERS B, 2007, 652 (01) : 13 - 20
[8] GUSEVA I, 2008, INT SEM ISINN, V16, P370
[9] NUCLEAR CONSTITUTION AND THE INTERPRETATION OF FISSION PHENOMENA
HILL, DL
WHEELER, JA
[J]. PHYSICAL REVIEW, 1953, 89 (05): : 1102 - 1145
[10] DYNAMICS OF NUCLEAR-FISSION
HILSCHER, D
ROSSNER, H
[J]. ANNALES DE PHYSIQUE, 1992, 17 (06) : 471 - 552

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