Gamma-ray multiplicity measurements using STEFF

Gamma-ray multiplicity measurements using STEFF
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使用 STEFF 进行伽马射线多重测量

DOI:
10.1088/1742-6596/381/1/012122
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发表时间:
2012
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Conference Series
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通讯作者:
Pollitt A
Pollitt A
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Pollitt A

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目前正在使用奇异裂变碎片光谱仪(STEFF)对252 Cf裂变过程中产生的角动量进行调查。用STEFF测量了倍数分布(测量的多重性)。这些已经与蒙特-卡罗模拟进行了比较,以确定平均角动量J rms= 6 μ m的值,该值与以前的测量值相当[1]。在门控不同碎片质量区域的同时进行伽马射线多重性的测量。将结果与质量门中碎片和互补的最低2+能量的总和进行比较。结果支持的观点,伽玛射线多重性在很大程度上是由核的衰变,通过近yraast过渡,遵循统计衰变。
An ongoing investigation into the angular momentum generated during the fission of 252 Cf is currently under way using the SpecTrometer for Exotic Fission Fragments (STEFF). Measurements have been made of the fold distribution (measured multiplicity) with STEFF. These have been compared to a Monte-carlo simulation to determine a value for the average angular momentum J rms= 6ℏ which is comparable to previous measurements [1]. Measurements of the gamma-ray multiplicity were performed whilst gating on different fragment mass regions. The result was compared with a sum of the lowest 2+ energies from both fragment and complementary in the mass gate. The results support the view that gamma-ray multiplicity is largely determined by the decay of the nucleus through near yrast transitions that follow the statistical decay.
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