One-Neutron Removal Measurement RevealsO 24 as a New Doubly Magic Nucleus
Author(s) -
R. Kanungo,
C. Nociforo,
A. Procházka,
T. Aumann,
D. Boutin,
D. CortinaGil,
B. Davids,
Μ. Diakaki,
F. Fari,
H. Geißel,
R. Gernhäuser,
J. Gerl,
R. Janik,
B. Jonson,
B. Kindler,
R. Knöbel,
R. Krücken,
M. Lantz,
H. Lenske,
Yu. A. Litvinov,
B. Lommel,
K. Mahata,
P. Maierbeck,
A. Musumarra,
T. Nilsson,
Takaharu Otsuka,
C. Perro,
C. Scheidenberger,
B. Sitár,
P. Strmeň,
B. Sun,
I. Szarka,
I. Tanihata,
Y. Utsuno,
H. Weick,
M. Winkler
Publication year - 2009
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.102.152501
Subject(s) - physics , neutron , nuclear physics , atomic physics
The first measurement of the momentum distribution for one-neutron removal from O24 at 920AMeV performed at GSI, Darmstadt is reported. The observed distribution has a width (FWHM) of 99±4MeV/c in the projectile rest frame and a one-neutron removal cross section of 63±7mb. The results are well explained with a nearly pure 2s1/2 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 O24 is a new doubly magic nucleus. © 2009 The American Physical Society
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