Electroexcitation of giant multipole resonances in /sup 24/Mg

Journal Article · Sun Mar 01 00:00:00 EST 1981 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.23.945· OSTI ID:6901089

Itoh, K; Ohsawa, S; Torizuka, Y; Saito, T; Terasawa, T

Highly excited multipole resonances of /sup 24/Mg between 9 and 34 MeV excitation energy have been investigated by inelastic electron scattering for incident energies in the 102 and 200 MeV range. Prominent giant dipole resonances were observed at 18.9 and 20 MeV excitation energy, with a shape which is very similar to the shape of the photoneutron cross section. Over twenty-five quadrupole and twenty octupole resonances were identified and separated by means of the multipole expansion method. The giant dipole strength exhausts (85/sup +9//sub -/17)% of the isovector dipole energy-weighted sum rule. The quadrupole and the octupole strength exhaust (117 +- 23)% and (115 +- 23)% of the corresponding isoscalar energy-weighted sum rule, respectively. Evidence for the excitation of higher multipole states such as hexadecapole transitions was also found in the excitation energy region studied.

• Research Organization: Saskatchewan Accelerator Laboratory, University of Saskatchewan, Saskatoon S7N 0W0, Canada
• OSTI ID: 6901089
• Journal Information: Phys. Rev., C; (United States), Vol. 23:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ELECTRON REACTIONS
INELASTIC SCATTERING
MAGNESIUM 24
ENERGY LEVELS
MAGNESIUM 24 TARGET
ANGULAR DISTRIBUTION
CROSS SECTIONS
EXPERIMENTAL DATA
GIANT RESONANCE
MEV RANGE 100-1000
MULTIPOLES
PHOTONEUTRONS
SUM RULES
ALKALINE EARTH ISOTOPES
BARYONS
CHARGED-PARTICLE REACTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
INFORMATION
ISOTOPES
LEPTON REACTIONS
LIGHT NUCLEI
MAGNESIUM ISOTOPES
MEV RANGE
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
PHOTONUCLEONS
RESONANCE
SCATTERING
STABLE ISOTOPES
TARGETS
651425* - Nuclear Properties & Reactions
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651423 - Nuclear Properties & Reactions
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