Two-phonon octupole excitation in {sup 208}Pb

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.1208· OSTI ID:284521

Yeh, M; Garrett, P E; McGrath, C A; Yates, S W ^[1]; Belgya, T ^[2]

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1. University of Kentucky, Lexington, Kentucky 40506-0055 (United States)
2. Institute of Isotopes, Hungarian Academy of Sciences, Budapest H-1525 (Hungary)

Experimental evidence for identification of the 5241-keV 0{sup +} state in {sup 208}Pb as the lowest-spin member of the 3{sup {minus}}{circle_times}3{sup {minus}} quartet is reported. This state, observed previously in neutron transfer reactions and inelastic proton scattering, has been populated with the inelastic neutron scattering reaction. Its decay to the 3{sup {minus}} octupole phonon in {sup 208}Pb is confirmed by {gamma}{minus}{gamma} coincidence measurements, and the spin-0 assignment is substantiated by the population cross section. The cascade of two {ital E}3 transitions thus established is an expected signature of a two-phonon octupole excitation. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 284521
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COINCIDENCE METHODS
CROSS SECTIONS
E3-TRANSITIONS
EXCITATION
INELASTIC SCATTERING
LEAD 208
NEUTRON REACTIONS
NEUTRONS
OCTUPOLES
PHONONS
PROTON REACTIONS
TRANSFER REACTIONS