He3 and He4 production by 800 MeV protons from C12, Ti, and Pb at forward angles

D. B. Barlow, B. M.K. Nefkens, C. Pillai, J. W. Price, I. Šlaus, M. J. Wang, J. A. Wightman, K. W. Jones, M. J. Leitch, C. S. Mishra, C. L. Morris, J. C. Peng, P. K. Teng, J. M. Tinsley

Research output: Contribution to journalArticlepeer-review

Abstract

The doubly differential cross section for the production of He3 and He4 by 800 MeV protons from C12, Ti, and Pb has been measured at laboratory angles of 6° and 15°. The momentum of the detected helium nuclei varied from 1 to 2 GeV/c, the maximum being well above the incident proton momentum of 1.46 GeV/c. The cross sections were found to increase with increasing target mass and decrease with increasing momentum and scattering angle. In our momentum region, the He3 production cross section is 1.510 times larger than He4 depending on the target and the momentum. The data are consistent with the hypothesis that the dominant reaction mechanism is a direct process where the initial nucleon-nucleon scattering is followed by a sequential pickup of neutrons.

Original languageEnglish (US)
Pages (from-to)293-298
Number of pages6
JournalPhysical Review C
Volume45
Issue number1
DOIs
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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