Two-step contribution to the spin-longitudinal and spin-transverse cross sections of the quasielastic (p,n) reactions

Yasushi Nakaoka
Phys. Rev. C 65, 064616 – Published 11 June 2002
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Abstract

The two-step contribution to the spin-longitudinal and the spin-transverse cross sections of 12C,40Ca(p,n) reactions at 494 MeV and 346 MeV is calculated. We use a plane-wave approximation and evaluate the relative contributions from the one-step and the two-step processes. We found that the ratios of the two-step to the one-step processes are larger in the spin-transverse cross sections than in the spin-longitudinal ones. Combining these results with the distorted-wave impulse approximation (DWIA) results we obtained considerable two-step contributions to the spin-longitudinal and the spin-transverse cross sections. The two-step processes are important in accounting for the underestimation of the DWIA results for the spin-longitudinal and the spin-transverse cross sections.

  • Received 31 July 2001

DOI:https://doi.org/10.1103/PhysRevC.65.064616

©2002 American Physical Society

Authors & Affiliations

Yasushi Nakaoka

  • Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

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Issue

Vol. 65, Iss. 6 — June 2002

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