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Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共7条,第1-7条 帮助

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First results of non-evaporable getter pump studies for the application in the EAST tokamak 期刊论文  OAI收割
VACUUM, 2024, 卷号: 226
作者:  
Wang, Chao;  Yu, Yaowei;  Sun, Hao;  Cao, Bin;  Pan, Hao
  |  收藏  |  浏览/下载:18/0  |  提交时间:2024/11/20
Application of compact Non-Evaporable Getter and Sputter combination in UHV system of HIAF 期刊论文  OAI收割
VACUUM, 2018, 卷号: 157, 页码: 159-165
作者:  
Luo, C.;  Li, P.;  Xie, W. J.;  Wan, Y. P.;  Chai, Z.
  |  收藏  |  浏览/下载:38/0  |  提交时间:2019/03/27
Analysis of frost heave mechanisms in a high-speed railway embankment 期刊论文  iSwitch采集
CANADIAN GEOTECHNICAL JOURNAL, 2016, 卷号: 53, 期号: 3, 页码: 520-529
作者:  
Zhang, Sheng;  Sheng, Daichao;  Zhao, Guotang;  Niu, Fujun;  He, Zuoyue
收藏  |  浏览/下载:44/0  |  提交时间:2019/10/09
Ultrafast dynamics of four-state magnetization reversal in (ga,mn)as 期刊论文  iSwitch采集
Applied physics letters, 2009, 卷号: 95, 期号: 5, 页码: 3
作者:  
Zhu, Yonggang;  Zhang, Xinhui;  Li, Tao;  Huang, Xia;  Han, Lifen
收藏  |  浏览/下载:41/0  |  提交时间:2019/05/12
Ultrafast dynamics of four-state magnetization reversal in (Ga,Mn)As 期刊论文  OAI收割
applied physics letters, 2009, 卷号: 95, 期号: 5, 页码: art. no. 052108
作者:  
Zhang XH
收藏  |  浏览/下载:95/1  |  提交时间:2010/03/08
Study on LD-pumped Nd:YAG laser cutter (EI CONFERENCE) 会议论文  OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Zhang G.;  Zhang G.;  Zhang G.;  Zhang J.;  Zhang J.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
The theory of laser cutter and the technology neck is analyzed. We can conclude that it is almost impossible to deal with the waste thick silicon wafers which are yielded in producing silicon wafers by conventional eroding or diamond cutting  when the cutting velocity equals 100mm/min  while it is also unperfected with ecumenical laser cutter without good beam quality or precise laseroptics system. It is represented that high average power and high repetition rate laser with good beam quality and precise laseroptics system are pivotal to obtain excellent cutting effect such as thick groove depth  double-layer 0.75mm thick silicon wafer can be penetrated.. The cross section is fine and the groove is narrow  rapid cutting speed  the cutting quality meets the expecting demand.  fine kerf section without considering the effect of technique. Considering laser medium thermal lens effect and thermal focal length changing with pumping power  using plano-convex high reflectivity mirror as the back cavity mirror to compensate the heat lens influence  a /4 waveplate to compensate heat -induced birefraction  utilize the Nd:YAG self- aperture effect  more than 50 W average power 1.064 um IR output is obtained with beam quality factor (M2) equals 3.19. Through the LD-Pumped Nd:YAG laser cutter we developed with short focus length negative spherical aberration focusing lens  double axis linear step motor positioning system  suitable beam expander multiplying factor  appropriate diameter of exit beam aperture  proper repetition rate  when the cutting velocity equals 400mm/min  0.75mm thick silicon wafer can be penetrated  
Simulations of reactive sputtering with constant voltage power supply 期刊论文  OAI收割
Journal of Applied Physics, 1998, 卷号: 84, 期号: 11, 页码: 6399-6408
S. L. Zhu; F. H. Wang; W. T. Wu
收藏  |  浏览/下载:31/0  |  提交时间:2012/04/14