Continuum excitations in neutron-rich oxygen isotopes

被引:0
|
作者
Aumann, T [1 ]
Leistenschneider, A [1 ]
Boretzky, K [1 ]
Cortina, D [1 ]
Cub, J [1 ]
Dostal, W [1 ]
Eberlein, B [1 ]
Elze, TW [1 ]
Emling, H [1 ]
Geissel, H [1 ]
Grünschloss, A [1 ]
Hellström, M [1 ]
Holeczek, J [1 ]
Holzmann, R [1 ]
Ilievski, S [1 ]
Iwasa, N [1 ]
Kaspar, M [1 ]
Kleinböhl, A [1 ]
Kratz, JV [1 ]
Kulessa, R [1 ]
Leifels, Y [1 ]
Lubkiewicz, E [1 ]
Münzenberg, G [1 ]
Reiter, P [1 ]
Rejmund, M [1 ]
Scheidenberger, C [1 ]
Schlegel, C [1 ]
Simon, H [1 ]
Stroth, J [1 ]
Sümmerer, K [1 ]
Wajda, E [1 ]
Walus, W [1 ]
Wan, S [1 ]
机构
[1] Michigan State Univ, E Lansing, MI 48824 USA
来源
关键词
D O I
10.1063/1.57327
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Electromagnetic and nuclear excitations of the neutron-rich Oxygen isotopes ranging from A = 17 to A = 22 are studied experimentally in reactions at energies around 600 MeV/u. By measuring the four-momenta of all decay products the excitation energy is determined. From the differential cross sections for electromagnetic excitation, the El-strength distributions can be deduced. For O-18,O-20,O-22, low-lying dipole strength is observed, exhausting about 5% of the energy weighted TRK sum rule for energies up to 5 MeV above the continuum threshold.
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页码:256 / 259
页数:4
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