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Proton and neutron knockout from 36Ca

Shane, R, Charity, RJ, Sobotka, LG, Bazin, D, Brown, BA, Gade, A, Grinyer, GF, McDaniel, S, Ratkiewicz, A, Weisshaar, D , Bonaccorso, A and Tostevin, JA (2012) Proton and neutron knockout from 36Ca Physical Review C: Nuclear Physics, 85 (6), 064612.

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The cross sections for single-nucleon knockout from Ca-36 on a Be-9 target at 70 MeV/nucleon were measured to be sigma(exp)(-p) = 51.1 +/- 2.6 mb for proton knockout and sigma(exp)(-n) = 5.03 +/- 0.46 mb for neutron knockout. The spectroscopic factors and orbital angular momenta of the neutrons and protons removed from Ca-36, leading to bound A = 35 residues, were deduced by comparison of the experimental cross sections and longitudinal- momentum distributions to those calculated in an eikonal reaction theory, and found to be S(p, 1d(3/2)) = 0.79 +/- 0.04 and S(n, 2s(1/2)) = 0.23 +/- 0.02 (relative to independent-particle-model values and only including experimental contributions to the uncertainties). As found in previous knockout studies, the spectroscopic factor deduced for the deeply bound neutron was significantly reduced relative to shell-model calculations, a result at variance with dispersive optical model (DOM) extrapolations, which suggest a spectroscopic factor closer to 60% of the independent-particle-model value.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Shane, R
Charity, RJ
Sobotka, LG
Bazin, D
Brown, BA
Gade, A
Grinyer, GF
McDaniel, S
Ratkiewicz, A
Weisshaar, D
Bonaccorso, A
Tostevin, JA
Date : 15 June 2012
DOI : 10.1103/PhysRevC.85.064612
Contributors :
ContributionNameEmailORCID, N
Related URLs :
Additional Information : Copyright 2012 The American Physical Society.
Depositing User : Symplectic Elements
Date Deposited : 06 Nov 2012 11:34
Last Modified : 31 Oct 2017 14:47

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