One-neutron removal reactions on Al isotopes around the N=20 shell closure
Artikel i vetenskaplig tidskrift, 2012
The one-neutron removal cross sections of neutron-rich Al isotopes and longitudinal momentum distributions of the residues have been measured for A=33 to 36 at relativistic energies (≈900 MeV/u). The inclusive data have been interpreted within the eikonal approximation. The evolution of the single-particle occupancy in the ground state of 33,34,35Al has been studied and compared with shell model predictions. The inferred 2s1/2 neutron occupancy in the 33Al ground-state wave function is 20% to 40% lower than the predicted one. The inclusive data do not exclude the presence of intruder states. Some intruder l=1 occupancy is found in 34Al, similarly to 33Mg. The single-particle 1f7/2 occupancy shows a gradual increase at N=22. Correspondingly, a decrease of the 1d3/2 strength has been observed.
Författare
C. Nociforo
A. Prochazka
R. Kanungo
T. Aumann
D. Boutin
D. Cortina-Gil
B. Davids
M. Diakaki
F. Farinon
H. Geissel
R. Gernhäuser
R. Janik
Björn Jonson
Chalmers, Teknisk fysik, Subatomär fysik
B. Kindler
R. Knöbel
R. Krücken
N. Kurz
Mattias Lantz
Chalmers, Teknisk fysik, Subatomär fysik
H. Lenske
Yu. A. Litvinov
B. Lommel
K. Mahata
P. Maierbeck
A. Musumarra
Thomas Nilsson
Chalmers, Teknisk fysik, Subatomär fysik
C. Perro
C. Scheidenberger
B. Sitar
P. Strmen
B. Sun
I. Szarka
I. Tanihata
H. Weick
M. Winkler
Physical Review C - Nuclear Physics
24699985 (ISSN) 24699993 (eISSN)
Vol. 85 4 044312Ämneskategorier (SSIF 2011)
Subatomär fysik
Fundament
Grundläggande vetenskaper
DOI
10.1103/PhysRevC.85.044312