Unified formalism to study nonstatistical effects in radiative capture reactions

Journal Article · Sat Jun 01 04:00:00 EDT 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.2765· OSTI ID:5663341

Yuan, Z ^[1]; Ho, Y ^[2]; Liu, J; Lu, Z ^[3]

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1. Nuclear Science Department, Fudan University, Shanghai (China)
2. Center of Theoretical Physics, China Center of Advanced Science Technology (World Laboratory), Beijing (China) Nuclear Science Department, Fudan University, Shanghai, China
3. Physics Department, Zhengzhou University, Zhengzhou, Henan (China)

Based upon a consistent description of the wave functions of the captured state and the final state, a unified formalism has been established to investigate the nonstatistical effects in radiative nucleon capture reactions at energies ranging from 0.1 to 20 MeV. This model includes the direct-semidirect capture and radiative capture in the compound elastic and inelastic channels. By applying this model theory and including also the statistical contributions of the compound-nucleus process, the radiative neutron capture cross sections in {sup 27}Al, {sup 55}Mn, {sup 89}Y, and {sup 208}Pb have been calculated and the results are compared with the measured data. We have also investigated the relative importance of the operation for each nonstatistical mechanism in the total capture cross sections.

• OSTI ID: 5663341
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 43:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 TARGET
BARYON REACTIONS
CAPTURE
CROSS SECTIONS
E2-TRANSITIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EQUATIONS
FUNCTIONS
HADRON REACTIONS
INTEGRAL EQUATIONS
LEAD 208 TARGET
LIPPMANN-SCHWINGER EQUATION
MANGANESE 55 TARGET
METALS
MEV RANGE
MEV RANGE 01-10
MULTIPOLE TRANSITIONS
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
TARGETS
TRANSITION ELEMENTS
WAVE FUNCTIONS
YTTRIUM