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APS » Journals » Phys. Rev. Lett. » Volume 88 » Issue 4
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Phys. Rev. Lett. 88, 041101 (2002) [4 pages]

7Be(p,γ)8B Astrophysical S Factor from Precision Cross Section Measurements

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A. R. Junghans, E. C. Mohrmann, K. A. Snover, T. D. Steiger*, E. G. Adelberger, J. M. Casandjian†, and H. E. Swanson
Center for Experimental Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195

L. Buchmann, S. H. Park‡, and A. Zyuzin
TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada, V6T 2A3

Received 13 August 2001; published 14 January 2002

We measured the 7Be(p,γ)8B cross section from E̅ c.m. = 186 to 1200 keV, with a statistical-plus-systematic precision per point of better than ±5%. All important systematic errors were measured including 8B backscattering losses. We obtain S17(0) = 22.3±0.7(expt)±0.5(theor)eVb from our data at E̅ c.m.≤300keV and the theory of Descouvemont and Baye.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.041101
DOI:
10.1103/PhysRevLett.88.041101
PACS:
26.20.+f, 25.40.Lw, 26.65.+t, 27.20.+n

*Present address: Cymer, Inc., 16750 Via del Campo Court, San Diego, California 92127.

†Permanent address: GANIL, B.P. 5027, 14021 Caen Cedex, France.

‡Permanent address: Department of Physics, National University, Seoul 151-742, Republic of Korea.

See Also

See Also: A. R. Junghans, K. A. Snover, E. C. Mohrmann, E. G. Adelberger, and L. Buchmann, Updated S factors for the 7Be(p,γ)8B reaction, Phys. Rev. C 81, 012801 (2010).

 
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