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浏览/检索结果: 共2条，第1-2条 帮助 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 Anti-stokes fluorescent cooling by energy transfer (EI CONFERENCE) 会议论文 Qin W.; Huang S.; Du G.; Zhang J.; De G.; Zhang J.; Wang Y.; Cao C.; Lu S. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 A new model on the mechanism of anti-Stokes fluorescent cooling is proposed  based on which incident laser induces a phonon-assisted energy transfer from one luminescent center to another in an optical medium and causes medium cooling when the energy transfer is an anti-Stokes process and absorbs phonons. Here  we develop the model in two cases: two-phonon-assisted energy transfer for a small energy mismatch and one-phonon-assisted energy transfer for a large energy mismatch. The dependence of relative cooling efficiency on photon energy and temperature is also discussed in evaluating the new mechanism. 2006 Elsevier B.V. All rights reserved.   Orthogonal design analysis of steel energy absorb and lower bumper system based on pedestrian protection lower leg impact 会议论文 第九届国际汽车交通安全论坛 INFATS, 长沙, 2011 作者:  Sun Jinxia;  Liu Mengying;  Liu Hongxiang;  Shen Haidong 收藏  |  浏览/下载：0/0  |  提交时间：2020/01/05 finite  element  method  pedestrian  protection  GTR  steel  energy  absorbs  and  lower  bumper  system  orthogonal  design