1ST OBSERVATION OF THE COULOMB-EXCITED DOUBLE GIANT-DIPOLE RESONANCE IN PB-208 VIA DOUBLE-GAMMA DECAY

被引：135

作者：

RITMAN, J

BERG, FD

KUHN, W

METAG, V

NOVOTNY, R

NOTHEISEN, M

PAUL, P

PFEIFFER, M

SCHWALB, O

LOHNER, H

VENEMA, L

GOBBI, A

HERRMANN, N

HILDENBRAND, KD

MOSNER, J

SIMON, RS

TEH, K

WESSELS, JP

WIENOLD, T

机构：

[1] GESELL SCHWERIONENFORSCH GMBH,W-6100 DARMSTADT 11,GERMANY

[2] SUNY STONY BROOK,STONY BROOK,NY 11794

[3] UNIV HEIDELBERG,INST PHYS,W-6900 HEIDELBERG,GERMANY

[4] FORSCHUNGSZENTRUM ROSSENDORF,ROSSENDORF,GERMANY

[5] KVI GRONINGEN,GRONINGEN,NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.70.533

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 1A GeV Bi-209 on Pb-208. For peripheral events which are dominated by relativistic Coulomb excitation, a large Lorentzian structure in the photon energy spectrum is peaked at 13.3+/-0.1 MeV with a width of 4.1+/-0.1 MeV, corresponding to the single GDR in the Pb-208 target. The sum energy of coincident gamma-gamma pairs shows a broad feature at 25.6+/-0.9 MeV with a Lorentzian width of 5.8+/-1.1 MeV, which we assign to the double GDR observed via the two-gamma decay channel.

引用

页码：533 / 536

页数：4

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