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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Intensity information extraction in Geiger mode detector array based three dimensional imaging applications 会议论文 5th International Symposium on Photoelectronic Detection and Imaging, ISPDI 2013, June 25, 2013 - June 27, 2013, Beijing, China, June 25, 2013 - June 27, 2013 Fei W. 收藏  |  浏览/下载：13/0  |  提交时间：2014/05/15 The key technologies of a new semi-automatic chemiluminescence immunoassay analyzer based on the photomultiplier tube (EI CONFERENCE) 会议论文 2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China Luo G.; Wang B.; Yuan C.; Wu Z.; Zhang X. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 In this paper  we present a new semi-automatic chemiluminescence immunoassay analyzer  which is based on photons counter consists by the photomultiplier tube.The photons count efficiency is very high  which makes the test result be more sensitive and steady.A calibration circuit was presented int this paper  which was used to check the veracity of the photons counting. Significantly  this paper presents two unique compensation modules-measuring chamber and double spherical-convex lens optical system  which are used to improve the efficiency of photons counting. 2010 IEEE.   Mechanisms of energy transfer in Pr3+ and Cr3+ codoped SrAl12O19 phosphor (EI CONFERENCE) 会议论文 209th ECS Meeting, May 7, 2006 - May 12, 2006, Denver, CO, United states Nie Z.; Zhang J.; Ren X. G.; Zhang G.; Wang X.-J. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 A two-step energy transfer was observed in Pr3+ and Cr 3+ codoped SrAl12O19 phosphor  which results in a two-photon luminescence for one UV/vacuum-UV photon absorbed. For one Pr 3+ ion excited to the lowest 4f5d states  two Cr3+ ions may be excited and emit two red photons due to 2E- 4A2 transitions of the Cr3+ ions  Cr 3+ ions can be excited into the 4T1(F) levels by cross relaxation of Pr3+ 1S0- 1I6 or by direct energy transfer from Pr3+ 3P0  1 states. The mechanisms of the two-step energy transfer process were studied based on spectra and lifetime measurements. copyright The Electrochemical Society.   Energy transfer in Pr3+- and Cr3+-codoped SrAl 12O19 system (EI CONFERENCE) 会议论文 Nie Z.; Zhang J.; Zhang X.; Luo Y.; Lu S.; Wang X. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 The energy transfer processes in Pr3+- and Cr 3+-codoped SrAl12O19 system are studied experimentally. The transfer can convert the 1S0 ultraviolet fluorescence of Pr3+ into the red emission of Cr 3+. The 3P0 state  which may be populated by 1S0&rarr1I6 emission  can also act as a donor state in the transfer to Cr3+. Cross-relaxation process is reported firstly in energy transfer between the pair of Pr 3+-Cr3+ in SrAl12O19 system. Two-step energy transfer is discussed  which involves two visible photons for each vacuum ultraviolet photon absorbed. 2006 Elsevier B.V. All rights reserved.