A new isomer in 136Ba populated by deep inelastic collisions

A new isomer in 136Ba populated by deep inelastic collisions
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DOI：
10.1140/epja/i2003-10163-6
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发表时间：
2004-05
期刊：
The European Physical Journal A - Hadrons and Nuclei
影响因子：
--
通讯作者：
T. Shizuma;Z. Gan;K. Ogawa;H. Nakada;M. Oshima;Y. Toh;T. Hayakawa;Y. Hatsukawa;M. Sugawara;Y. Utsuno;Z. Liu
T. Shizuma;Z. Gan;K. Ogawa;H. Nakada;M. Oshima;Y. Toh;T. Hayakawa;Y. Hatsukawa;M. Sugawara;Y. Utsuno;Z. Liu
中科院分区：
其他
文献类型：
--
作者：
T. Shizuma;Z. Gan;K. Ogawa;H. Nakada;M. Oshima;Y. Toh;T. Hayakawa;Y. Hatsukawa;M. Sugawara;Y. Utsuno;Z. Liu

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用束内光谱学研究了由450个MeV82Se离子与a139La靶相互作用而形成的深度非弹性碰撞中的136ba激发态。发现了一种激发能为3.357 MeV的新异构体。半衰期用两种方法测定。提取的db （E2）值远小于132te和134xe。通过壳模型计算研究了这种阻力。
Excited states in136Ba, populated in deep inelastic collisions by the interaction of 450 MeV82Se ions with a139La target, have been studied by means of in-beam-ray spectroscopy. A new isomer withhas been identified at an excitation energyEx= 3.357 MeV. The half-life was determined asns. The extractedB(E2) value is much smaller than those in132Te and134Xe. This hindrance is investigated by a shell model calculation.