首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1篇
  完全免费   1篇
  物理学   2篇
  2017年   1篇
  2009年   1篇
排序方式: 共有2条查询结果,搜索用时 93 毫秒
1
1.
用周期极化KTP晶体高效倍频获得稳定461nm激光   总被引:1,自引:0,他引:1  
实验采用准相位匹配的PPKTP晶体对922nm连续激光进行外腔谐振倍频,获得稳定461nm激光.实验装置采用一体化环形腔没计,实现最大耦合转换效率达73.3%,获得208 mW的461 nm蓝光输出.实验结论中通过分析,修正损耗误差,得到最佳耦合腔镜反射率,并深入讨论了耦合腔镜的两种反射率对倍频输出功率和效率的影响,同时就晶体吸收效应和热透镜效应对倍频试验的影响也进行了深入研究.  相似文献
2.
The photoionization and photodissociation of 1,4-dioxane have been investigated with a reflectron time-of-flight photoionization mass spectrometry and a tunable vacuum ultraviolet synchrotron radiation in the energy region of 8.0-15.5 eV. Parent ion and fragment ions at m/z 88, 87, 58, 57, 45, 44, 43, 41, 31, 30, 29, 28 and 15 are detected under supersonic conditions. The ionization energy of DX as well as the appearance energies of its fragment ions C4H7O2+, C3H6O+, C3H5O+, C2H5O+, C2H4O+, C2H3O+, C3H5+, CH3O+, C2H6+, C2H5+/CHO+, C2H4+ and CH3+ was determined from their photoionization efficiency curves. The optimized structures for the neutrals, cations, transition states and intermediates related to photodissociation of DX are characterized at the B3LYP/6-31+G(d,p) level and their energies are obtained by G3B3 method. Possible dissociative channels of the DX are proposed based on comparison of experimental AE values and theoretical predicted ones. Intramolecular hydrogen migrations are found to be the dominant processes in most of the fragmentation pathways of 1,4-dioxane.  相似文献
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号