Search for {ital p} waves in low-energy proton capture reactions relevant to the solar neutrino problem
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708 (United States)
A previous study of the ground-state transition of the {sup 7}Li({ital p}{searrow},{gamma}){sup 8}Be reaction at energies of {ital E}{sub {ital p}}(lab)=80{endash}0 keV indicated the possibility of a large {ital p}-wave capture amplitude in this reaction. A similar {ital p}-wave component in the {sup 7}Be({ital p},{gamma}){sup 8}B reaction could seriously affect the extrapolation used to obtain the astrophysical {ital S} factor. The present work examines this possibility by observing the closely related {sup 7}Li({ital p}{searrow},{gamma}{sub 16.6}){sup 8}Be{asterisk} (2{sup +}, {ital T}=0+1) reaction with polarized protons at and below 80 keV. Experimental data for {sigma}({theta})/{ital A}{sub 0} and {ital A}{sub {ital y}}({theta}) for capture to the third (16.6 MeV) excited state of {sup 8}Be are presented, and the implications discussed. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Duke University
- DOE Contract Number:
- FG05-91ER40619
- OSTI ID:
- 277438
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 53; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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