Giant monopole resonance strength in Ca-40
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Date
1997
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
The giant resonance region in Ca-40 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. A peak at E-x = 17.5 +/- 0.4 MeV with Gamma = 4.95 +/- 0.25 MeV was found to contain 33 +/- 4% of the isoscalar E0 energy-weighted-sum-mle (EWSR) strength and 57 +/- 6% of the isoscalar E2 EWSR. Evidence was found for 92 +/- 15% of the isoscalar E0 EWSR between 8 < E-x < 29 MeV with a centroid of 18.9 +/- 0.4 MeV and a rms half width of 11.1 MeV but a definitive L = 0 assignment could not be made. The resulting E-GMR is in agreement with systematics from heavier nuclei.
Description
Journals published by the American Physical Society can be found at http://publish.aps.org/
Keywords
ALPHA-PARTICLES, SCATTERING, EXCITATION, NUCLEI, ENERGY, COMPRESSIBILITY, POTENTIALS, MODEL, Physics
Citation
David H. Youngblood, Y. W. Lui and H. L. Clark. Phys.Rev.C 55 2811-2818 1997. "Copyright (1997) by the American Physical Society."