Simplified spin cutoff factors for particle-hole level densities in precompound nuclear reaction theory
Journal Article
·
· Nucl. Sci. Eng.; (United States)
OSTI ID:5707839
A logical first step toward incorporating a precompound nuclear reaction theory in the Hauser-Feshbach formalism, widely used for compound reaction cross-section calculations, is to develop unified level density formulas needed for the two parts of the calculation. An advanced, simplified formulation of the spin cutoff factors for particle-hole level densities, based on the uniform pairing model, is presented. This simplified formula, explicitly dependent on the excitation energy and the exciton number, is easy to use for the precompound part of the calculation and is shown to be consistent with the formula used for the Hauser-Feshbach part of the calculation. Differences between the present approach and a previous one are analyzed.
- Research Organization:
- Oak Ridge National Laboratory, Oak Ridge, TN 37831
- OSTI ID:
- 5707839
- Journal Information:
- Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 92:3; ISSN NSENA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
ANGULAR MOMENTUM
CALCULATION METHODS
CROSS SECTIONS
DENSITY MATRIX
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITONS
HAUSER-FESHBACH THEORY
KINETICS
MATHEMATICAL MODELS
MATRICES
NUCLEAR MODELS
NUCLEAR REACTION KINETICS
NUCLEAR THEORY
PARTICLE PROPERTIES
PARTICLE-HOLE MODEL
QUASI PARTICLES
REACTION KINETICS
SPIN
220100* -- Nuclear Reactor Technology-- Theory & Calculation
ANGULAR MOMENTUM
CALCULATION METHODS
CROSS SECTIONS
DENSITY MATRIX
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITONS
HAUSER-FESHBACH THEORY
KINETICS
MATHEMATICAL MODELS
MATRICES
NUCLEAR MODELS
NUCLEAR REACTION KINETICS
NUCLEAR THEORY
PARTICLE PROPERTIES
PARTICLE-HOLE MODEL
QUASI PARTICLES
REACTION KINETICS
SPIN