Fissile Nuclei Rotation Effect in {sup 235}U(n,{gamma}f) Process

Journal Article · Wed Jan 28 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3087113· OSTI ID:21255507

Danilyan, Gevorg; Krakhotin, Vyacheslav; Kuznetsov, Valery; Novitsky, Vadim; Pavlov, Valery; Shatalov, Pavel ^[1]; Granz, Peter; Mezei, Ferenz; Russina, Margarita; Wilpert, Thomas ^[2]; Klenke, Jens ^[3]

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1. Alikhanov Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218 Moscow (Russian Federation)
2. Hahn-Meitner Institut, Glienicker str. 100, D14109 Berlin (Germany)
3. Forschungsneutronenquelle Heinz Maier-Leibnitz, Lichtenberstr. 1, 85747 Garching (Germany)

A small shift of an angular distribution of prompt {gamma}-rays relative to the fission axis of {sup 236}U* {sup 235}U(n,{gamma}f) process is presented. This effect has been observed in the experiment at BER-II reactor of BENSC/HMI (Berlin). The sign of the shift depends on the direction of the incident neutron beam polarization. This phenomena can be explained by the rotation of fissile nucleus {sup 236}U*, like the effect that has been observed recently at ILL in ternary fission of {sup 235}U by cold polarized neutrons. The main surprise of this result is the detection of scission gamma-rays radiated by a fissile nucleus during the time interval of the order of 10{sup -21} s before or after the moment of the neck rupture. Detailed measurements of trigger {gamma}-rays energy dependence are in progress at the neutron beam 'MEPHISTO' of FRM-II reactor (Garching)

• OSTI ID: 21255507
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1090; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BER-2 REACTOR
ENERGY DEPENDENCE
FRM-II REACTOR
GAMMA RADIATION
NEUTRON BEAMS
NEUTRON REACTIONS
NEUTRONS
POLARIZED BEAMS
RUPTURES
SHELL MODELS
TERNARY FISSION
URANIUM 235
URANIUM 235 TARGET
URANIUM 236