Inclusive measurement of quasifree (p,<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>x</mi><mi mathvariant="normal">n</mi></math></span>) charge exchange reactions on bismuth from 62 to 800 MeV

J. M. D'Auria; M. Dombsky; G. Sheffer; T. E. Ward; H. J. Karwowski; A. I. Yavin; J. L. Clark

doi:10.1103/PhysRevC.30.236

Inclusive measurement of quasifree (p, $x n$ ) charge exchange reactions on bismuth from 62 to 800 MeV

J. M. D'Auria, M. Dombsky, G. Sheffer, T. E. Ward, H. J. Karwowski, A. I. Yavin, and J. L. Clark

Phys. Rev. C 30, 236 – Published 1 July 1984

Abstract

The total inclusive (p, $x n$ ) charge exchange reaction cross section on bismuth from 62 to 800 MeV was measured using activation and radiochemical techniques. These data for products with as many as 14 neutrons removed from the coherent product display the simple $E^{- 1}$ dependence of the total cross section with incident projectile energy. The distribution of charge exchange products is discussed in terms of quasifree processes in (p,n) reactions. A model comparison between the data and an intranuclear cascade calculation was satisfactory as evidenced by reproducing the energy dependence, cross section magnitude, and mass yields for products up to 14 neutrons removed. Better agreement between the model and data were obtained with mean-free paths of nucleons in nuclear matter twice as long as the one derived from nucleon-nucleon scattering.

Received 21 February 1984

DOI:https://doi.org/10.1103/PhysRevC.30.236

Authors & Affiliations

J. M. D'Auria, M. Dombsky, and G. Sheffer^*

Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6

T. E. Ward^† and H. J. Karwowski^‡

Indiana University Cyclotron Facility, Indiana University, Bloomington, Indiana 47401

A. I. Yavin

Department of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel

J. L. Clark^§

Los Alamos National Laboratory, Los Alamos, New Mexico 87545

^*Permanent address: TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3.
^†Permanent address: Department of Chemistry, Indiana University, Bloomington, IN 47401.
^‡Permanent address: Department of Physics, North Carolina State University, Triangle Park, NC 27607.
^§Permanent address: General Physics Corporation, 1000 Century Plaza, Columbia, MD 21044.

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Vol. 30, Iss. 1 — July 1984

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Physical Review C

covering nuclear physics