Asymptotic normalization coefficients (nuclear vertex constants) for p + {sup 7}Be {yields} {sup 8}B and the direct {sup 7}Be(p, {gamma}){sup 8}B astrophysical S factors at solar energies

Journal Article · Wed Oct 15 04:00:00 EDT 2008 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778808100098· OSTI ID:21404641

Igamov, S B; Yarmukhamedov, R ^[1]

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1. Uzbekistan Academy of Sciences, Institute of Nuclear Physics (Uzbekistan)

A new analysis of the precise experimental astrophysical S factors for the direct-capture reaction {sup 7}Be(p, {gamma}){sup 8}B [A.J. Junghans et al., Phys. Rev. C 68, 065803 (2003) and L.T. Baby et al., Phys. Rev. C 67, 065805 (2003)] is carried out on the basis of a modified two-body potential approach in which the direct astrophysical S factor, S{sub 17}(E), is expressed in terms of the asymptotic normalization constants for p + {sup 7}Be {yields} {sup 8}B and two additional conditions are involved to verify the peripheral character of the reaction under consideration. The Woods-Saxon potential form is used for the bound-(p + {sup 7}Be)-state wave function and for p{sup 7}Be-scattering wave function. New estimates are obtained for the 'indirectly measured' values of the asymptotic normalization constants (the nuclear vertex constants) for the p + {sup 7}Be {yields} {sup 8}B and S{sub 17}(E) at E {<=} 115 keV, including E = 0. These values of S{sub 17}(E) and asymptotic normalization constants have been used for obtaining the indirectly measured values of the s-wave average scattering length and the p-wave effective-range parameters for p{sup 7}Be scattering.

• OSTI ID: 21404641
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 10 Vol. 71; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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ASYMPTOTIC SOLUTIONS
BARYON REACTIONS
BERYLLIUM 7 REACTIONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORON 8
BORON ISOTOPES
CAPTURE
CHARGED-PARTICLE REACTIONS
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ENERGY
ENERGY RANGE
ENERGY SOURCES
FUNCTIONS
HADRON REACTIONS
HEAVY ION REACTIONS
ISOTOPES
KEV RANGE
LENGTH
LIGHT NUCLEI
MANY-BODY PROBLEM
MATHEMATICAL SOLUTIONS
MILLISECONDS LIVING RADIOISOTOPES
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-ODD NUCLEI
P WAVES
PARTIAL WAVES
PHYSICS
POTENTIALS
PROTON REACTIONS
RADIOISOTOPES
RENEWABLE ENERGY SOURCES
S WAVES
SCATTERING
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SOLAR ENERGY
TWO-BODY PROBLEM
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WOODS-SAXON POTENTIAL