Use of the ( e , e prime n ) reaction to study the giant multipole resonances in sup 116 Sn

Journal Article · Mon Apr 01 00:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.1677· OSTI ID:5645693

Miskimen, R A; Ammons, E A; Arruda-Neto, J D.T.; Bolme, G O; Cardman, L S; Cole, P L; Deininger, J R; Dolfini, S M; Linzey, A J; Mandeville, J B; Miller, B L; Mueller, P E; Papanicolas, C N; Serdarevic, A; Williamson, S E ^[1]

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1. Nuclear Physics Laboratory and Department of Physics, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820 (US)

The giant multipole resonances in {sup 116}Sn have been studied using the ({ital e},{ital e}{prime}{ital n}) reaction. Data were taken at effective momentum transfers of 0.37, 0.45, and 0.55 fm{sup {minus}1} and a multipole analysis of the data was performed. The inferred multipole strength functions identify the {ital E}2 and {ital E}0 resonances as distinct peaks at 12.2 and 17.9 MeV, respectively. The energy-weighted sum-rule strengths for the {ital E}2 and {ital E}0 resonances, obtained using a Lorentzian fit to the data, are 34{plus minus}13% and 93{plus minus}37%. When compared with results from alpha scattering and pion scattering the sum-rule strengths exhibit approximate agreement, but the {ital E}0 strength identified in this measurement lies at higher excitation energy, consistent with the trend observed in heavier nuclei. The ({ital e},{ital e}{prime}{ital n}) data are compared with a continuum random phase approximation (RPA) calculation of the {ital E}2 and {ital E}0 strengths, and with an open-shell RPA calculation of the {ital E}2 strength. Both calculations disagree with the data in the region of the {ital E}2 resonance.

• DOE Contract Number: AC02-76ER02853
• OSTI ID: 5645693
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Vol. 43:4; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
TIN 116
GIANT RESONANCE
ELECTRON REACTIONS
INELASTIC SCATTERING
NEUTRONS
RANDOM PHASE APPROXIMATION
STRENGTH FUNCTIONS
SUM RULES
BARYONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
EQUATIONS
EVEN-EVEN NUCLEI
FERMIONS
FUNCTIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RESONANCE
SCATTERING
STABLE ISOTOPES
TIN ISOTOPES
651720* - Nuclear Properties & Reactions
A=90-149
Experimental