Isotopic identification of the parity-violating neutron p-wave resonance at energy E0=3.2 eV in Xe.
Isotopic identification of the parity-violating neutron p-wave resonance at energy E0=3.2 eV in Xe.
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Xe 能量 E0=3.2 eV 处破缺中子 p 波共振的同位素识别。
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
Mitchell
中科院分区：
文献类型：
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作者：
Skoy;Sharapov;Gundorin;Popov;Prokofichev;Roberson;Mitchell
在 IBR-30 脉冲中子源上测量了二维脉冲高度和飞行时间 (TOF) 谱，以对最近在 Xe 中观察到的 {ital E}{sub 0}=3.2 eV 处的宇称破坏 {ital p} 波共振进行同位素识别。对对应于特征低能伽马射线的 TOF 光谱的分析确定了 {sup 131}Xe 同位素作为 3.2-eV 共振的起源。这一新发现对开发用于测试中子时间反转不变性的极化固体{sup 131}Xe靶材提出了挑战。 {版权} {ital 1996 美国物理学会。}
Two-dimensional pulse height and time-of-flight (TOF) spectra were measured at the IBR-30 pulsed neutron source to make the isotopic identification of the parity-violating {ital p}-wave resonance at {ital E}{sub 0}=3.2 eV recently observed in Xe. Analysis of the TOF spectra corresponding to the characteristic low-energy gamma-rays established the {sup 131}Xe isotope as the origin of the 3.2-eV resonance. This new finding poses a challenge for the development of a polarized solid {sup 131}Xe target for a test of time-reversal invariance with neutrons. {copyright} {ital 1996 The American Physical Society.}