An eikonal treatment including two-step mechanisms for the (p,n) reaction on light nuclei

J. Kronenfeld; A. Gal; J. M. Eisenberg

doi:10.1016/0375-9474(83)90220-8

An eikonal treatment including two-step mechanisms for the (p,n) reaction on light nuclei

J. Kronenfeld^*
, A. Gal
, J. M. Eisenberg

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The reactions ⁷Li(p, n)⁷Be(g.s.), ⁷Li(p, n)⁷Be(0.43 MeV), and ¹³C(p, n)¹³N(g.s.) are treated in an eikonalized distorted-wave impulse approximation (DWIA), including the contribution of a two-step mechanism involving isovector correlations for the last reaction. Our calculation uses the free on-shell nucleon-nucleon t-matrix, with spin and isospin dependence, and incorporates antisymmetrization of it. We find agreement at roughly the 20% level with the forward experimental charge-exchange results in the energy range 120 to 200 MeV. The two-step contribution for the ¹³C case is rather small, being of the order of 10% at 0°; it interferes constructively, thus improving somewhat the agreement with experiment.

Original language	English
Pages (from-to)	569-580
Number of pages	12
Journal	Nuclear Physics A
Volume	402
Issue number	3
DOIs	https://doi.org/10.1016/0375-9474(83)90220-8
State	Published - 4 Jul 1983

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title = "An eikonal treatment including two-step mechanisms for the (p,n) reaction on light nuclei",

abstract = "The reactions 7Li(p, n)7Be(g.s.), 7Li(p, n)7Be(0.43 MeV), and 13C(p, n)13N(g.s.) are treated in an eikonalized distorted-wave impulse approximation (DWIA), including the contribution of a two-step mechanism involving isovector correlations for the last reaction. Our calculation uses the free on-shell nucleon-nucleon t-matrix, with spin and isospin dependence, and incorporates antisymmetrization of it. We find agreement at roughly the 20\% level with the forward experimental charge-exchange results in the energy range 120 to 200 MeV. The two-step contribution for the 13C case is rather small, being of the order of 10\% at 0°; it interferes constructively, thus improving somewhat the agreement with experiment.",

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T1 - An eikonal treatment including two-step mechanisms for the (p,n) reaction on light nuclei

AU - Kronenfeld, J.

AU - Gal, A.

AU - Eisenberg, J. M.

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N2 - The reactions 7Li(p, n)7Be(g.s.), 7Li(p, n)7Be(0.43 MeV), and 13C(p, n)13N(g.s.) are treated in an eikonalized distorted-wave impulse approximation (DWIA), including the contribution of a two-step mechanism involving isovector correlations for the last reaction. Our calculation uses the free on-shell nucleon-nucleon t-matrix, with spin and isospin dependence, and incorporates antisymmetrization of it. We find agreement at roughly the 20% level with the forward experimental charge-exchange results in the energy range 120 to 200 MeV. The two-step contribution for the 13C case is rather small, being of the order of 10% at 0°; it interferes constructively, thus improving somewhat the agreement with experiment.

AB - The reactions 7Li(p, n)7Be(g.s.), 7Li(p, n)7Be(0.43 MeV), and 13C(p, n)13N(g.s.) are treated in an eikonalized distorted-wave impulse approximation (DWIA), including the contribution of a two-step mechanism involving isovector correlations for the last reaction. Our calculation uses the free on-shell nucleon-nucleon t-matrix, with spin and isospin dependence, and incorporates antisymmetrization of it. We find agreement at roughly the 20% level with the forward experimental charge-exchange results in the energy range 120 to 200 MeV. The two-step contribution for the 13C case is rather small, being of the order of 10% at 0°; it interferes constructively, thus improving somewhat the agreement with experiment.

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An eikonal treatment including two-step mechanisms for the (p,n) reaction on light nuclei

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