| 甲烷团簇与氘团簇的团簇源特性比较 |
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| 引用本文： | 魏番惠,吴玉迟,杨朝文,谷渝秋.甲烷团簇与氘团簇的团簇源特性比较[J].强激光与粒子束,2010,22(9). |
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| 作者姓名： | 魏番惠 吴玉迟 杨朝文 谷渝秋 |
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| 作者单位： | 1. 中国工程物理研究院 激光聚变研究中心， 四川 绵阳 621900； 2. 四川大学 物理科学与技术学院， 成都 610064 |
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| 基金项目： | 国家自然科学基金重点项目，中国工程物理研究院基金重大项目 |
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| 摘 要： | 利用瑞利散射法测量了特定喷嘴产生的甲烷团簇及氘团簇的大小随背压的变化曲线。将团簇大小的实验值与Hagena理论进行了比较,当背压超过3MPa时,两种团簇的实验值都明显高于理论值。实验发现,特定喷嘴在相同的背压下,常温(298K)甲烷团簇尺寸小于低温(80K)氘团簇尺寸,而甲烷团簇中氢原子数至少是氘团簇中氘原子数的1.98倍。
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| 关 键 词： | 氘团簇 瑞利散射 团簇尺寸 甲烷团簇 |
| 收稿时间： | 1900-01-01; |
Characteristics comparison of deuterium clusters and methane clusters |
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| Wei Fanhui,Wu Yuchi,Yang Chaowen,Gu Yuqiu.Characteristics comparison of deuterium clusters and methane clusters[J].High Power Laser and Particle Beams,2010,22(9). |
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| Authors: | Wei Fanhui Wu Yuchi Yang Chaowen Gu Yuqiu |
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| Institution: | 1. Research Center of Laser Fusion, CAEP, P. O. Box 919-986, Mianyang 621900, China; 2. Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China |
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| Abstract: | For deuterium clusters and methane clusters produced by specific jet nozzle, Rayleigh scattering has been employed to investigate the cluster formation process and to measure the cluster size at different gas back pressure. The comparison between Hegena’s theory and our experiment shows that, experimental sizes of deuterium and methane clusters are larger than their respective theoretical ones; the methane clusters derived at 298 K is smaller than the deuterium clusters derived at 80 K, but hydrogen atoms in methane clusters are at least 1.98 times the number of deuterium atoms in deuterium clusters under the same back pressure. |
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| Keywords: | methane cluster Rayleigh scattering cluster size |
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