辐照L-丙氨酸的多频电子顺磁共振
Multifrequency electron paramagnetic resonance of irradiated L-alanine.
作者信息
Ghim B T, Du J L, Pfenninger S, Rinard G A, Quine R W, Eaton S S, Eaton G R
机构信息
Department of Chemistry, University of Denver, CO 80208, USA.
出版信息
Appl Radiat Isot. 1996 Nov-Dec;47(11-12):1235-9. doi: 10.1016/s0969-8043(96)00037-1.
The radical generated by gamma-irradiation of crystalline L-alanine was examined by continuous wave (CW) and pulsed electron paramagnetic resonance (EPR) at 1.8, 3.2, 4.9, 9.1 and 19.4 GHz. The spin-flip satellite lines that make a prominent contribution to the saturated spectra at 9.1 GHz are less conspicuous at lower frequencies because of overlap with the allowed transitions. The spin-lattice relaxation times measured by long-pulse saturation recovery and phase memory times measured by electron spin echo increase with increasing microwave frequency.
通过在1.8、3.2、4.9、9.1和19.4吉赫兹下的连续波（CW）和脉冲电子顺磁共振（EPR），研究了晶体L-丙氨酸经γ辐射产生的自由基。在9.1吉赫兹时对饱和光谱有显著贡献的自旋翻转卫星线，在较低频率下由于与允许跃迁重叠而不太明显。通过长脉冲饱和恢复测量的自旋晶格弛豫时间和通过电子自旋回波测量的相位记忆时间随微波频率的增加而增加。
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