Lifetimes of yrast rotational states of the fission fragments 100Zr and 104Mo measured using a differential plunger
Lifetimes of yrast rotational states of the fission fragments 100Zr and 104Mo measured using a differential plunger
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使用差动柱塞测量裂变碎片 100Zr 和 104Mo 的 yrast 旋转状态的寿命
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
N. Schulz
中科院分区：
文献类型：
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作者：
A. Smith;R. M. Wall;D. Patel;G. Simpson;D. Cullen;J. Durell;S. Freeman;J. Lisle;J. Smith;B. Varley;G. Barreau;M. Petit;C. Theisen;E. Bouchez;M. Houry;R. Lucas;B. Cahan;A. Coguie;B. Gall;O. Dorvaux;N. Schulz
利用252Cf源和EUROBALL及SAPHIR多探测器阵列，采用差动柱塞装置，对100Zr和104Mo的Yrast转动态进行了寿命测量。该系统已被证明能够覆盖从纳秒到皮秒的寿命范围。发现在104Mo的情况下，在I = 4和I = 8之间，跃迁四极矩减小约20%，而在100Zr中保持恒定。这种效应的起源在于旋转引起的形状变化，或者在104Mo的基态和s带之间的强混合。
Lifetime measurements have been performed for yrast rotational states of 100Zr and 104Mo using a 252Cf source in a differential plunger arrangement, together with the EUROBALL and SAPHIR multi-detector arrays. The system has been proved capable of covering a range of lifetimes from a nanosecond to a picosecond. The transition quadrupole moments are found to decrease by around 20% between I = 4 and I = 8 in the case of 104Mo while remaining constant in 100Zr. The origin of this effect lies either in a rotation-induced shape change, or in the strong mixing between the ground and s-bands in 104Mo.