Structure of N22 and the N=14 subshell

C. Rodríguez-Tajes et al.
Phys. Rev. C 83, 064313 – Published 13 June 2011

Abstract

One-neutron knockout data for N1822 are analyzed in the eikonal approximation of the Glauber model. The role of the s-d shell and the crossing of the N=14 neutron subshell are discussed. Of particular interest is the nucleus N22, where the knockout data provide a sensitive experimental test for a possible halo structure of its ground state. The observation of a narrow momentum distribution of the N21 fragments, together with an essential 1s1/2 contribution needed to describe the observed longitudinal-momentum distribution, allow the firm conclusion that the ground state of N22 is a well-developed nuclear halo. The results also show that the N=14 subshell in N22 is somewhat reduced as compared to that of O23.

  • Figure
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  • Received 8 February 2011

DOI:https://doi.org/10.1103/PhysRevC.83.064313

©2011 American Physical Society

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Vol. 83, Iss. 6 — June 2011

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