학술논문
Role of cross-shell excitations in the reaction 54 Fe( $$ \vec d $$, p)55 Fe.
Document Type
Article
Author
Source
Subject
*NUCLEAR shell theory
*SPECTRUM analysis
*NUCLEAR excitation
*ANGULAR distribution (Nuclear physics)
*NUCLEAR reactions
*IRON spectra
*
*
*
*
*
Language
ISSN
1434-6001
Abstract
The reaction 54Fe( $$ \vec d $$, p)55Fe was studied at the Munich Q3D spectrograph with a 14MeV polarized deuteron beam. Excitation energies, angular distributions and analyzing powers were measured for 39 states up to 4.5MeV excitation energy. Spin and parity assignments were made and spectroscopic factors deduced by comparison to DWBA calculations. The results were compared to predictions by large-scale shell model calculations in the full pf -shell and it was found that reasonable agreement for energies and spectroscopic factors below 2.5MeV could only be obtained if up to 6 particles were allowed to be excited from the f7/2 orbital into p3/2 , f5/2 , and p1/2 orbitals across the N = 28 gap. For levels above 2.5MeV the experimental strength distribution was found to be significantly more fragmented than predicted by the shell model calculations. [ABSTRACT FROM AUTHOR]