Structure of 22N and the N=14 subshell
Journal article, 2011

One-neutron knockout data for N18-22 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 N-22, 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 N-21 fragments, together with an essential 1s(1/2) contribution needed to describe the observed longitudinal-momentum distribution, allow the firm conclusion that the ground state of N-22 is a well-developed nuclear halo. The results also show that the N = 14 subshell in N-22 is somewhat reduced as compared to that of O-23.

neutron-rich nuclei

knockout

halo

be-11

cross-sections

fragmentation

Author

C. Rodriguez-Tajes

D. Cortina-Gil

H. Alvarez-Pol

T. Aumann

E. Benjamim

J. Benlliure

M. J. G. Borge

M. Caamano

E. Casarejos

A. Chatillon

L. V. Chulkov

K. Eppinger

T. Faestermann

M. Gascon

H. Geissel

R. Gernhauser

Björn Jonson

Chalmers, Applied Physics, Subatomic Physics

R. Kanungo

R. Krucken

T. Kurtukian

K. Larsson

P. Maierbeck

Thomas Nilsson

Chalmers, Applied Physics, Subatomic Physics

C. Nociforo

Y. Parfenova

C. Pascual-Izarra

A. Perea

D. Perez-Loureiro

A. Prochazka

S. Schwertel

H. Simon

K. Summerer

O. Tengblad

H. Weick

M. Winkler

Mikhail Zhukov

Chalmers, Applied Physics, Subatomic Physics

Physical Review C - Nuclear Physics

0556-2813 (ISSN) 1089-490X (eISSN)

Vol. 83 6

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevC.83.064313

More information

Created

10/8/2017