Counterfeit E-1' signal in quartz
Counterfeit E-1' signal in quartz
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DOI：
10.1016/s1350-4487(96)00073-x
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发表时间：
1997-02-01
影响因子：
2
通讯作者：
Schwarcz, HP
中科院分区：
文献类型：
--
作者：
Toyoda, S;Schwarcz, HP
在伽马射线辐照的天然石英中，发现一个明显的电子自旋共振(ESR)信号与E-1‘中心信号重叠。它的g值与E-1‘中心的信号相同，其强度在0.4 mW的微波功率以下开始饱和，E-1’中心的强度也是如此。这个信号的形状是一个峰，而“真实的”E-1中心信号几乎是轴向的，有两个峰。重叠的信号被发现非常不稳定，在15摄氏度时其半衰期估计为28年(平均寿命为40年)。我们把它命名为“伪造的E-1”信号。我们指出了检查伽马射线辐照天然石英中所观测到的假定E-1‘信号的信号形状和热稳定性的必要性。(C)1997年爱思唯尔科学有限公司。
A distinct ESR (electron spin resonance) signal was found to overlap the E-1' centre signal in natural quartz irradiated by gamma-rays. Its g-value is identical to the signal of the E-1' centre and its intensity begins to saturate below a microwave power of 0.4 mW, as does that of the E-1' centre. The shape of this signal shows one peak, whereas the ''real'' E-1' centre signal is almost axial, having two peaks. The overlapping signal was found to be very unstable and its half life was estimated to be 28 years at 15 degrees C (mean life of 40 years). We named it the ''counterfeit E-1' signal''. We show the necessity of examining the signal shape and the thermal stability of the supposed E-1' signal observed in natural quartz irradiated by gamma-rays. (C) 1997 Elsevier Science Ltd.