First observation of the Coulomb-excited double giant dipole resonance in [sup 208]Pb via double-[gamma] decay

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.533· OSTI ID:6889303

Ritman, J; Berg, F; Kuehn, W; Metag, V; Novotny, R; Notheisen, M; Paul, P; Pfeiffer, M; Schwalb, O ^[1]; Loehner, H; Venema, L ^[2]; Gobbi, A; Herrmann, N; Hildenbrand, K D; Moesner, J; Simon, R S; Teh, K; Wessels, J P; Wienold, T ^[3]

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1. II. Physikalisches Institut, Universitaet Giessen, Giessen (Germany)
2. KVI Groningen, Groningen (Netherlands)
3. Gesellschaft fuer Schwerionenforschung Darmstadt, Darmstadt (Germany)

The photon decay of the relativistic Coulomb excitation of the single and double giant dipole resonance (GDR) in the target has been observed in the system 1[ital A] GeV [sup 209]Bi on [sup 208]Pb. For peripheral events which are dominated by relativistic Coulomb excitation, a large Lorentzian structure in the photon energy spectrum is peaked at 13.3[plus minus]0.1 MeV with a width of 4.1[plus minus]0.1 MeV, corresponding to the single GDR in the [sup 208]Pb target. The sum energy of coincident [gamma]-[gamma] pairs shows a broad feature at 25.6[plus minus]0.9 MeV with a Lorentzian width of 5.8[plus minus]1.1 MeV, which we assign to the double GDR observed via the two-[gamma] decay channel.

• OSTI ID: 6889303
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:5; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

663220* -- Electromagnetic Transitions-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BISMUTH 209
BISMUTH ISOTOPES
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
COULOMB FIELD
COUNTING TECHNIQUES
CROSS SECTIONS
DATA
DATA ANALYSIS
DISTRIBUTION
ELECTRIC FIELDS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
GAMMA SPECTRA
GIANT RESONANCE
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
ISOTOPES
LEAD 208
LEAD ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
PARAMETRIC ANALYSIS
RELATIVISTIC RANGE
RESONANCE
SPECTRA
STABLE ISOTOPES