Structure of 22N and the N=14 subshell
Artikel i vetenskaplig tidskrift, 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
Författare
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, Teknisk fysik, Subatomär fysik
R. Kanungo
R. Krucken
T. Kurtukian
K. Larsson
P. Maierbeck
Thomas Nilsson
Chalmers, Teknisk fysik, Subatomär fysik
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, Teknisk fysik, Subatomär fysik
Physical Review C - Nuclear Physics
05562813 (ISSN) 1089490x (eISSN)
Vol. 83 6Ämneskategorier (SSIF 2011)
Fysik
DOI
10.1103/PhysRevC.83.064313