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测量了不同激光功率照射下,在具有不同导热率的三种衬底上蒸镀膜所吸附的C60分子的振动光谱。发现在激光功率达到800mW时,C60分子发生“石墨子”。对石墨化的起因做了定性分析。 相似文献
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实验测量了自行研制的三明治电极结构化学气相沉积(CVD)金刚石薄膜探测器在室温下对241Am, 243Am 与244Cm α粒子的能谱响应,得到了其α粒子响应电荷收集效率随偏压的变化关系;获得了不同偏压下其相对平均电荷收集效率及响应谱下降沿10%处的相对电荷收集效率。结果表明:所研制的CVD金刚石薄膜探测器性能稳定,对α粒子响应的电荷收集效率随偏压的增加而趋于饱和,对α粒子平均电荷收集效率达33.5%,谱下降沿10%处的电荷收集效率达57%。 相似文献
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We investigate the parameters such as the energy gains, comparisons for linearly and circularly polarized laser fields, the electron incident polarization azimuth angle, the electron incident crossing angle, and the electronincident momentum, etc., which are crucial for experimental test of the vacuum laser acceleration scheme in capture and acceleration scenario (CAS) [see, e.g., Phys. Rev. E 66 (2002) 066501]. Physical explanation of these features has been presented based on the CAS scheme. The results show that all those parameters are in the reasonable ranges obtainable by presently experimental facilities. 相似文献
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