Dipole strength function in 20O

被引：12

作者：

Tryggestad, E ^{[1
]}

Aumann, T

Bazin, D

Beene, JR

Blumenfeld, Y

Chartier, M

Halbert, ML

Heckman, P

Liang, JF

Radford, DC

Shapira, D

Sherrill, BM

Thoennessen, M

Varner, RL

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[3] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[4] Univ Tennessee, Knoxville, TN 37996 USA

[5] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA

[6] GSI Darmstadt, D-64291 Darmstadt, Germany

[7] IN2P3, F-91406 Orsay, France

[8] CEN Bordeaux Gradignan, F-33175 Gradignan, France

来源：

NUCLEAR PHYSICS A | 2001年 / 687卷 / 1-2期

关键词：

D O I：

10.1016/S0375-9474(01)00626-1

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The dipole strength function of neutron-rich 20O was measured in the region of 1 to 8 MeV by the method of virtual photon scattering. This method relies on the detection of real decay-photons following the virtual excitation of relativistic projectiles. A 100 MeV/u 20O beam was excited by a 208Pb target and the energy-loss of the projectile was correlated with the γ-ray energies. The observed 20O excitation spectrum shows several broad peaks in the region above 3 MeV, which indicates a shifting of low-lying dipole strength from higher excitation energies in this neutron-rich oxygen isotope.

引用

页码：231C / 236C

页数：6

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