Folding model analysis of the excitation of low-lying states and the high energy octupole resonance in {sup 116}Sn by 240 MeV {alpha} scattering
- Cyclotron Institute, Texas AM University, College Station, Texas 77843 (United States)
The sum rule strength of the high energy octupole resonance (HEOR) and the transition rates of low-lying 2{sup +} and 3{sup {minus}} states of {sup 116}Sn, excited by 240 MeV {alpha} scattering, have been determined from deformed potential and folding model analyses. Deformed potential cross sections for both the low-lying 3{sup {minus}} state and the HEOR are greater than folding cross sections by a factor of 1.18. The high energy octupole resonance was found to exhaust (70{plus_minus}15){percent} and (83{plus_minus}15){percent} of the E3 energy-weighted sum rule from the two analyses, respectively. The data for the low-lying states are fit well by the calculations made with both models using electromagnetic values for the transition rates. Optical-model parameters were obtained from fits to elastic scattering data. The differential cross sections for the elastic scattering and inelastic scattering exciting the low-lying 2{sup +} and 3{sup {minus}} states in {sup 116}Sn were measured over the angle range from {theta}{sub c.m.}=1.6{degree} to 35.2{degree}. {copyright} {ital 1998} {ital The American Physical Society}
- DOE Contract Number:
- FG03-93ER40773
- OSTI ID:
- 634239
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 57; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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