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STUDY ON POSITRON ANNIHILATION LIFETIME SPECTRA IN RAW AND HEAT-CURED SILICONE RUBBER
【摘要】 <正> The method of analyzing positron annihilation lifetime spectra was used to study molecular structures of raw silicone rubbers with different molecular weights and heat-cured silicone rubbers’s constitutions. The positron annihilation lifetime spectra were measured using a fast-fast coincidence circuitry positron lifetime spectrometer modified by us from a fast-slow delayed coincidence positron lifetime spectrometer
【关键词】 lifetime；
spectrometer；
silicone；
coincidence；
positron；
cured；
weights；
RAW；
vinyl；
rubber；
- 【文献出处】 Chinese Science Bulletin ,科学通报(英文版) , 编辑部邮箱 ,1989年07期
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