Temperature dependence of the giant dipole resonance width in 208Pb

E. Ramakrishnan; A. Azhari; J. R. Beene; R. J. Charity; M. L. Halbert; P. F. Hua; R. A. Kryger; P. E. Mueller; R. Pfaff; D. G. Sarantites; L. G. Sobotka; M. Thoennessen; G. Van Buren; R. L. Varner; S. Yokoyama

doi:10.1016/0370-2693(96)00746-0

Temperature dependence of the giant dipole resonance width in ²⁰⁸Pb

E. Ramakrishnan
, A. Azhari
, J. R. Beene
, R. J. Charity
, M. L. Halbert
, P. F. Hua
, R. A. Kryger
, P. E. Mueller
, R. Pfaff
, D. G. Sarantites
, L. G. Sobotka
, M. Thoennessen
, G. Van Buren
, R. L. Varner
, S. Yokoyama

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

The evolution of the giant dipole resonance (GDR) in hot ²⁰⁸Pb nuclei was studied by measuring high energy γ-rays from the decay of the resonance built on excited states. Nuclei in the excitation energy range of 40-110 MeV were populated by inelastic scattering of 40 MeV/nucleon α-particles. The GDR width was observed to increase systematically from 4 MeV at the ground state to ∼8 MeV at the highest excitation energy.

Original language	English
Pages (from-to)	252-257
Number of pages	6
Journal	Physics Letters B
Volume	383
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(96)00746-0
State	Published - Sep 5 1996

Funding

This work was partially supported by the US National Science Foundation under grant No. PHY-92-14992 and by the Department of Energy under grants No. DE-FGOI-88ER40406 and DE-FG02-87ER4031 6. Oak Ridge National Laboratory is man-agedb y Lockheed Martin Energy Systems,I nc. under contract DE-AC05840R21400 with the US Department of Energy.

Keywords

Giant dipole resonance
Hot nuclei
Shell effects
Statistical model

Access to Document

10.1016/0370-2693(96)00746-0

Cite this

Ramakrishnan, E., Azhari, A., Beene, J. R., Charity, R. J., Halbert, M. L., Hua, P. F., Kryger, R. A., Mueller, P. E., Pfaff, R., Sarantites, D. G., Sobotka, L. G., Thoennessen, M., Van Buren, G., Varner, R. L., & Yokoyama, S. (1996). Temperature dependence of the giant dipole resonance width in ²⁰⁸Pb. Physics Letters B, 383(3), 252-257. https://doi.org/10.1016/0370-2693(96)00746-0

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title = "Temperature dependence of the giant dipole resonance width in 208Pb",

abstract = "The evolution of the giant dipole resonance (GDR) in hot 208Pb nuclei was studied by measuring high energy γ-rays from the decay of the resonance built on excited states. Nuclei in the excitation energy range of 40-110 MeV were populated by inelastic scattering of 40 MeV/nucleon α-particles. The GDR width was observed to increase systematically from 4 MeV at the ground state to ∼8 MeV at the highest excitation energy.",

keywords = "Giant dipole resonance, Hot nuclei, Shell effects, Statistical model",

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doi = "10.1016/0370-2693(96)00746-0",

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T1 - Temperature dependence of the giant dipole resonance width in 208Pb

AU - Ramakrishnan, E.

AU - Azhari, A.

AU - Beene, J. R.

AU - Charity, R. J.

AU - Halbert, M. L.

AU - Hua, P. F.

AU - Kryger, R. A.

AU - Mueller, P. E.

AU - Pfaff, R.

AU - Sarantites, D. G.

AU - Sobotka, L. G.

AU - Thoennessen, M.

AU - Van Buren, G.

AU - Varner, R. L.

AU - Yokoyama, S.

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AB - The evolution of the giant dipole resonance (GDR) in hot 208Pb nuclei was studied by measuring high energy γ-rays from the decay of the resonance built on excited states. Nuclei in the excitation energy range of 40-110 MeV were populated by inelastic scattering of 40 MeV/nucleon α-particles. The GDR width was observed to increase systematically from 4 MeV at the ground state to ∼8 MeV at the highest excitation energy.

KW - Giant dipole resonance

KW - Hot nuclei

KW - Shell effects

KW - Statistical model

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