Collective effects in level density, and the probability of fission

Journal Article · Thu Nov 01 00:00:00 EST 1979 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5176754

Ignatyuk, A V; Istekov, K K; Smirenkin, G N

The important role of the rotational increase of the level density of nuclei in description of the observed probability of fission of pre-actinide nuclei is shown. From analysis of existing experimental data an energy dependence of the corresponding coefficient is found which demonstrates deviations from the adiabatic estimate of rotational effects in highly excited nuclei. Inclusion of collective effects in the fission and neutron decay channels of compound nuclei permits a consistent description of the observed fissility both in the near-threshold region and in the high-energy region where emission fission is dominant.

• Research Organization: Physics and Power Engineering Institute, Obninsk
• OSTI ID: 5176754
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Vol. 30:5
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
FISSION
PROBABILITY
HEAVY NUCLEI
COLLECTIVE EXCITATIONS
ENERGY-LEVEL DENSITY
ENERGY DEPENDENCE
MEV RANGE 10-100
ROTATIONAL STATES
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
MEV RANGE
NUCLEAR REACTIONS
NUCLEI
653006* - Nuclear Theory- Spontaneous & Induced Fission