Thermal decay rate of multidimensional fission under a nonlinear coupling

Journal Article · Tue May 01 04:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.2451· OSTI ID:6847410

Takigawa, N ^[1]; Abe, M ^[2]

---

1. Department of Physics, Tohoku University, 980 Sendai (Japan)
2. Department of Basic Science, Ishinomaki Senshu University, 986 Ishinomaki, (Japan)

We study the effects of coupling between the fission coordinate and bosonic intrinsic excitations on the fission width by using a path integral method. We assume a general coupling form factor and discuss how the decay width at high temperature changes from that of the extended Kramers formula recently obtained in the bilinear coupling model. Applying the results to two different types of bosonic spectra we show a possibility to represent the effects of nonlinearity of the coupling in terms of a suitable renormalization of the friction and the mass for the fission coordinate.

• OSTI ID: 6847410
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653006* -- Nuclear Theory-- Spontaneous & Induced Fission
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
BOUNDARY CONDITIONS
COUPLING
DECAY
FISSION
FORM FACTORS
FUNCTIONS
HAMILTONIANS
KRAMERS THEOREM
LAGRANGIAN FUNCTION
MASS RENORMALIZATION
MATHEMATICAL OPERATORS
NUCLEAR REACTIONS
PARTICLE PROPERTIES
PARTITION FUNCTIONS
QUANTUM OPERATORS
RENORMALIZATION