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Title: Effects of. Delta. -isobar degrees of freedom on the reactions sup 3 He(n,. gamma. ) sup 4 He and sup 3 He(p,e sup +. nu. sub e ) sup 4 He at low-energy

The cross sections of the radiative {sup 3}He(n,{gamma}){sup 4}He and weak {sup 3}He(p,e{sup +}{nu}{sub e}){sup 4}He capture reactions at thermal neutron and keV proton energies have been calculated with the Variational Monte Carlo method. The ground state and low-energy continuum wave functions have been determined variationally from a realistic Hamiltonian, and include both nucleon and {Delta}-isobar degrees of freedom. The electroweak transition operator contains one- and two-body components in the N + {Delta} Hilbert space.
Authors:
Publication Date:
OSTI Identifier:
5796382
Report Number(s):
ANL/CP-75177; CONF-9110327--1
ON: DE92006987
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: Current problems in theoretical nuclear physics conference, Elba (Italy), 16-18 Oct 1991
Research Org:
Argonne National Lab., IL (United States)
Sponsoring Org:
DOE; USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; HELIUM 3 TARGET; NUCLEON REACTIONS; CAPTURE; CROSS SECTIONS; DEGREES OF FREEDOM; ISOBARIC NUCLEI; MOMENTUM TRANSFER; MONTE CARLO METHOD; NEUTRON REACTIONS; PROTON REACTIONS; VARIATIONAL METHODS; WAVE FUNCTIONS; BARYON REACTIONS; CHARGED-PARTICLE REACTIONS; FUNCTIONS; HADRON REACTIONS; NUCLEAR REACTIONS; NUCLEI; TARGETS 663430* -- Nucleon-Induced Reactions & Scattering-- (1992-); 663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)