New prompt spectral gamma-ray data from the reaction Cf-252(sf) and its implication on present evaluated nuclear data files
New prompt spectral gamma-ray data from the reaction Cf-252(sf) and its implication on present evaluated nuclear data files
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DOI：
10.1103/physrevc.87.024601
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发表时间：
2013-02
影响因子：
3.1
通讯作者：
R. Billnert;F. Hambsch;A. Oberstedt;S. Oberstedt
中科院分区：
文献类型：
--
作者：
R. Billnert;F. Hambsch;A. Oberstedt;S. Oberstedt
我们目前的结果，从新的光谱提示γ射线测量的自发裂变的CF-252。除了最近的一次实验，自文献中报道最后一次专门实验以来，大约已经过去了四十年。因此，有必要进行修订。我们测量了瞬发裂变。射线与铈掺杂的LaBr 3和CeBr 3闪烁探测器，这两个表现出出色的时间和良好的能量分辨率。发射产率被确定为nu（gamma）=（8.30 +/- 0.08）/裂变和nu（gamma）=（8.31 +/- 0.10）/裂变，平均能量为（伽马）=（0.80 +/- 0.01）MeV，并且是（伽马）=（0.80 +/- 0.01）MeV和总能量的E-γ，E-tot =（6.64 +/- 0.08）MeV和E-γ，E-tot =（6.65 +/- 0.12）MeV，分别与LaBr 3和CeBr 3探测器。由于两个探测器的结果非常一致，并证实了历史数据，但不是目前评估的核数据文件中的数据，我们强烈建议进行更新。
We present results from new spectral prompt gamma-ray measurements from the spontaneous fission of Cf-252. Apart from one recent experiment, about four decades have passed since the last dedicated experiments were reported in the literature. Hence, there was a need for a revision. We have measured prompt fission. rays with both cerium-doped LaBr3 and CeBr3 scintillation detectors, both of which exhibit excellent timing and good energy resolution. The emission yield was determined to be nu(gamma) = (8.30 +/- 0.08)/fission and nu(gamma) = (8.31 +/- 0.10)/fission, with the average energy of is an element of(gamma) = (0.80 +/- 0.01) MeV and is an element of(gamma) = (0.80 +/- 0.01) MeV and total energy of E-gamma,E-tot = (6.64 +/- 0.08) MeV and E-gamma,E-tot = (6.65 +/- 0.12) MeV, with the LaBr3 and CeBr3 detectors, respectively. Since the results from the two detectors are in excellent agreement and confirm the historical data, but not those in the present evaluated nuclear data files, we strongly recommend an update.