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浏览/检索结果: 共8条,第1-8条 帮助

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Evolution of Chain Conformation and Entanglements during Startup Shear 期刊论文  OAI收割
acs macro letters, 2013, 卷号: 2, 期号: 6, 页码: 561-565
Lu YY; An LJ; Wang SQ; Wang ZG
收藏  |  浏览/下载:21/0  |  提交时间:2014/04/15
Beam-wave interaction analysis of gyrotron-traveling-wave tube based on a lossy dielectric-lined waveguide 期刊论文  iSwitch采集
Acta physica sinica, 2010, 卷号: 59, 期号: 7, 页码: 4612-4619
作者:  
Du Chao-Hai;  Liu Pu-Kun;  Xue Qian-Zhong
收藏  |  浏览/下载:23/0  |  提交时间:2019/05/10
The third type dc flow in pulse tube cryocooler 期刊论文  iSwitch采集
Science in china series e-technological sciences, 2009, 卷号: 52, 期号: 12, 页码: 3491-3496
作者:  
Zhou Yuan;  Gu Chao;  Cai HuiKun
收藏  |  浏览/下载:30/0  |  提交时间:2019/05/10
Analysis on velocity spread of a w-band gyrotron traveling wave amplifier 期刊论文  iSwitch采集
Journal of infrared and millimeter waves, 2006, 卷号: 25, 期号: 6, 页码: 447-450
作者:  
Lai Guo-Jun;  Liu Pu-Kun
收藏  |  浏览/下载:19/0  |  提交时间:2019/05/10
Study of microsphere plate photomultiplier tube (EI CONFERENCE) 会议论文  OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Wang X.;  Li Y.;  Li Y.;  Li Y.;  Li Y.
收藏  |  浏览/下载:42/0  |  提交时间:2013/03/25
The photomultiplier tube (PMT) that can work in different wavelength is an important detector device in remote sense technology. Microsphere plate using glass beads 50to 70m in diameter sintered together is the core component of the microsphere plate photomultiplier tube It is a novel two-dimension electron multiplier. The electrons gain for a single plate is about 1017 and do not have the phenomenon of ion-feedback. Furthermore the fabrication process is very easy. In this paper  much interest was put on the microsphere plate photomultiplier tube. Based on the analyses from the theory and the experiment result  we point out the key technology for fabricating PMT is how to obtain glass beads with narrow range in diameter and how to sinter the glass beads with a sufficient pylome. Factors affect the gradating technology and sintering process along with the solution to them is presented. In the last  the structure scheme and technological characteristic for fabricating microsphere plate photomultiplier tube were given. The pulse rising-time of MSP-PMT is below 400ps suitable to the detection of high-speed pulse. As easy to be fabricated and has great advantage over MCP multiplier in the ratio of performance to price  the microsphere plate photomultiplier tube is a promising dim-light detector.  
Method for the fabrication of isometric mesh on the concave of a spherical substrate (EI CONFERENCE) 会议论文  OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies, November 2, 2005 - November 5, 2005, Xian, China
作者:  
Feng X.-G.
收藏  |  浏览/下载:38/0  |  提交时间:2013/03/25
Metallic mesh has been widely used in electromagnetic interference windows. While the duty ratio of curved mesh equals to planar mesh'  the theory of planar mesh may be applied to curved mesh according to equivalent-circuit model. So the idea that latitude lines intersect latitude lines to form isometric mesh on the concave of a sphere is put forward  and the method of fabricating the mesh by concentric optical scan is introduced. The movement parts of equipment consist of an erection turning  a horizontal dividing and a pitching dividing spindle. Firstly  a spherical substrate is fixed on the horizontal dividing spindle that has been set horizontally on the erect turning spindle  the substrate revolves around the axis of the erect spindle  the tube of object lens that is fixed on the pitching dividing spindle steps at pitching direction  and a revolving circuit of the substrate corresponds to a step of the tube. Gradually  a set of latitude lines is attained. Afterward  the substrate makes a quarter turn around the horizontal spindle  another orientation latitude lines are also gained. Thus  the isometric mesh on the concave of a spherical substrate is gained. The process comprises surface cleaning  coating photoresist  laser direct writing  development  evaporated film  dissolving photoresist and plating. The fabricated spherical mesh has a line width of 7 m and a period of 600m. Experiment shows that infrared transmission and electromagnetism shield efficiency of the metallic mesh are relatively consistent with theoretical value.  
Masses and decay widths of heavy hybrid mesons 期刊论文  OAI收割
PHYSICAL REVIEW D, 1999, 卷号: 60, 期号: 1, 页码: -
作者:  
Zhu, SL;  Zhu, SL , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
  |  收藏  |  浏览/下载:20/0  |  提交时间:2012/08/29
INSTABILITY THEORY OF SHOCK WAVE IN A SHOCK TUBE 期刊论文  OAI收割
Acta Mechanica Sinica, 1992, 卷号: 8, 期号: 02, 页码: 104-107
作者:  
Xu F(徐复);  Xu CW(徐萃薇)
收藏  |  浏览/下载:10/0  |  提交时间:2015/08/28
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