annihilation spectrum

基本解释

By the positron annihilation life spectrum (PALS) technique, the free volumes of chitosan and its N alkyl derivatives membranes were measured.
用正电子湮灭寿命谱（PALS）法，研究了N-烷基化壳聚糖膜的自由体积。
For seeking after background spectrum, an iterative technique called gradual annihilation method is used in the module for analysis of differential spectrum.
在微分谱分析模块中采用了迭代技术求全谱本底，称之为逐次淹没法。
The measurements of positron annihilation lifetime spectrum for chlorophyll in cyclohexane (77K) and in alcohol (296K) were carried out under illumination at different light intensity.
测量了在不同光强下叶绿素环已烷溶液（77K）和酒精溶液（296K）的正电子湮没寿命谱。