Measurement of the Coulomb dissociation of B-8 at 254 MeV/nucleon and the B-8 solar neutrino flux

Citation
N. Iwasa et al., Measurement of the Coulomb dissociation of B-8 at 254 MeV/nucleon and the B-8 solar neutrino flux, PHYS REV L, 83(15), 1999, pp. 2910-2913
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
83
Issue
15
Year of publication
1999
Pages
2910 - 2913
Database
ISI
SICI code
0031-9007(19991011)83:15<2910:MOTCDO>2.0.ZU;2-J
Abstract
We have measured the Coulomb dissociation of B-8 into Be-7 and a proton at 254 MeV/nucleon using a large-acceptance focusing spectrometer. The astroph ysical S-17-factor for the Be-7(p, gamma)B-8 reaction at E-c.m. = 0.25-2.78 MeV is deduced yielding S-17(0) = 20.6 +/- 1.2 (expt) +/- 1.0(theor) eVb. This result agrees with the presently adopted zero-energy S-17-factor obtai ned in direct-reaction measurements and with the results of other Coulomb-d issociation studies performed at 46.5 and 51.2 MeV/nucleon.