One-Neutron Removal Measurement Reveals O-24 as a New Doubly Magic Nucleus
Artikel i vetenskaplig tidskrift, 2009
The first measurement of the momentum distribution for one-neutron removal from O-24 at 920A MeV performed at GSI, Darmstadt is reported. The observed distribution has a width (FWHM) of 99 +/- 4 MeV/c in the projectile rest frame and a one-neutron removal cross section of 63 +/- 7 mb. The results are well explained with a nearly pure 2s(1/2) neutron spectroscopic factor of 1.74 +/- 0.19 within the eikonal model. This large s-wave probability shows a spherical shell closure thereby confirming earlier suggestions that O-24 is a new doubly magic nucleus.
li-11
isotopes
fragment
particle stability
Författare
R. Kanungo
C. Nociforo
A. Prochazka
T. Aumann
D. Boutin
D. Cortina-Gil
B. Davids
M. Diakaki
F. Farinon
H. Geissel
R. Gernhauser
J. Gerl
R. Janik
Björn Jonson
Chalmers, Teknisk fysik, Subatomär fysik
B. Kindler
R. Knobel
R. Krucken
Mattias Lantz
Chalmers, Teknisk fysik, Subatomär fysik
H. Lenske
Y. Litvinov
B. Lommel
K. Mahata
P. Maierbeck
A. Musumarra
Thomas Nilsson
Chalmers, Teknisk fysik, Subatomär fysik
T. Otsuka
C. Perro
C. Scheidenberger
B. Sitar
P. Strmen
B. Sun
I. Szarka
I. Tanihata
Y. Utsuno
H. Weick
M. Winkler
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 102 15Ämneskategorier
Subatomär fysik
DOI
10.1103/PhysRevLett.102.152501