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.
用正電子湮滅壽命譜（PALS）法，研究了N-烷基化殼聚糖膜的自由躰積。
For seeking after background spectrum, an iterative technique called gradual annihilation method is used in the module for analysis of differential spectrum.
在微分譜分析模塊中採用了疊代技術求全譜本底，稱之爲逐次淹沒法。
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.
測量了在不同光強下葉綠素環已烷溶液（77K）和酒精溶液（296K）的正電子湮沒壽命譜。