Evidence for the Isoscalar Giant Dipole Resonance in {sup 208}Pb Using Inelastic {alpha} Scattering at and near 0{degree}

Journal Article · Tue Jul 01 00:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.609· OSTI ID:527050

Davis, B F; Garg, U; Reviol, W ^[1]; Harakeh, M N ^[2]; Bacher, A; Berg, G P; Foster, C C; Stephenson, E J; Wang, Y ^[3]; Jaenecke, J; Pham, K; Roberts, D ^[4]; Akimune, H; Fujiwara, M ^[5]; Lisantti, J ^[6]

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1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
2. KVI, 9747 AA Groningen (The Netherlands)
3. Indiana University Cyclotron Facility, 2401 Milo B.Sampson Lane, Bloomington, Indiana 47405 (United States)
4. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
5. Research Center for Nuclear Physics, Osaka University, Mihogaoka 10-1, 567 Osaka (Japan)
6. Department of Physics, Centenary College, Shreveport, Louisiana 71134 (United States)

The isoscalar giant dipole resonance (ISGDR) in {sup 208}Pb has been investigated using inelastic scattering of 200MeV {alpha} particles at and near 0{degree} where the angular distribution of the ISGDR can be clearly differentiated from those of other modes. The {open_quotes}difference of spectra{close_quotes} technique was employed to separate the ISGDR from the high-energy octupole resonance (HEOR). These data provide the clearest evidence yet for the ISGDR adjacent to the HEOR. With these results, all expected isoscalar {lambda}{le}3 resonances in {sup 208}Pb have been identified. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 527050
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
DIPOLES
GIANT RESONANCE
INELASTIC SCATTERING
LEAD 208 TARGET
OCTUPOLES
SPECTRA