Phys. Rev. C 55, 2811–2818 (1997)Giant monopole resonance strength in 40CaReceived 2 December 1996; published in the issue dated June 1997 The giant resonance region in 40Ca was studied with inelastic scattering of 240 MeV α particles at small angles including 0°. A peak at Ex=17.5±0.4MeV with Γ=4.95±0.25MeV was found to contain 33±4% of the isoscalar E0 energy-weighted-sum-rule (EWSR) strength and 57±6% of the isoscalar E2 EWSR. Evidence was found for 92±15% of the isoscalar E0 EWSR between 8<Ex<29MeV with a centroid of 18.9±0.4MeV and a rms half width of 11.1 MeV but a definitive L=0 assignment could not be made. The resulting EGMR is in agreement with systematics from heavier nuclei. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.55.2811
DOI:
10.1103/PhysRevC.55.2811
PACS:
24.30.Cz, 25.55.Ci, 27.40.+z, 27.80.+w
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