/sup 26/Al(n,p)/sup 26/Mg reaction: Comparison between the Hauser-Feshbach formula and the exact random-matrix result for the cross section

Journal Article · Sun Jun 01 00:00:00 EDT 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.2197· OSTI ID:5730483

Thomas, J; Zirnbauer, M R; Langanke, K

We have calculated the /sup 26/Al(n,p)/sup 26/Mg reaction rate using an exact expression for the compound-nucleus cross section derived recently by Verbaarschot et al. This reaction is astrophysically important, and it happens to fall in a kinematic regime where the exact expression is expected to yield large deviations from the standard Hauser-Feshbach formula. We find that the exact statistical cross section is 20% lower at energies greater than 300 keV, and drops to 40% lower at 0 energy but still does not describe the available data. These deviations are quite similar to those predicted by the formula of Tepel et al.

• Research Organization: Norman Bridge Laboratory of Physics, California Institute of Technology, Pasadena, California 91125
• OSTI ID: 5730483
• Journal Information: Phys. Rev. C; (United States), Vol. 33:6
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 26 TARGET
NEUTRON REACTIONS
CHARGE-EXCHANGE REACTIONS
COMPOUND-NUCLEUS REACTIONS
ASTROPHYSICS
CROSS SECTIONS
HAUSER-FESHBACH THEORY
MAGNESIUM 26
MONTE CARLO METHOD
PROTONS
S MATRIX
STATISTICAL MODELS
ALKALINE EARTH ISOTOPES
BARYON REACTIONS
BARYONS
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
HADRON REACTIONS
HADRONS
ISOTOPES
LIGHT NUCLEI
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MATRICES
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEI
NUCLEON REACTIONS
NUCLEONS
STABLE ISOTOPES
TARGETS
651415* - Nuclear Properties & Reactions
A=20-38
Theoretical- Nuclear Reactions & Scattering- (-1987)