Spin- and Parity-Dependent Level Densities in Exotic Calcium Isotopes?
Abstract
Level densities of 2+ and 1- states in 40Ca have been extracted from high energy-resolution (p,p') experiments performed using the K600 magnetic spectrometer at iThemba LABS, South Africa. The success of the method depends on the accurate determination of various background components underneath the giant resonance. It was found that using the nearly model-independent method of Discrete Wavelet Transform (DWT) background determination using bi-orthogonal wavelets of high order of vanishing moments proved sufficient for the extraction of level density in the excitation energy region of the Isoscalar Giant Quadrupole Resonance (ISGQR) and Isovector Giant Dipole Resonance (IVGDR). Comparison of the experimentally extracted 2+ and 1- level densities with Back-Shifted Fermi Gas Model (BSFG), Hartree-Fock Bogoliubov (HFB) and Hartree-Fock-Bardeen-Cooper Schriffer (HF-BCS) theoretical model predictions were made. Future interests in the use of radioactive-ion beams of different intensities will provide opportunities in elucidating this important property experimentally for more exotic calcium isotopes.
- Publication:
-
Exotic Nuclei (IASEN-2013) - Proceedings of the First International African Symposium on Exotic Nuclei. Edited by PENIONZHKEVICH YURI ERASTOVICH ET AL. Published by World Scientific Publishing Co. Pte. Ltd
- Pub Date:
- November 2015
- DOI:
- 10.1142/9789814632041_0049
- Bibcode:
- 2015exnu.conf..475U