机构

• 长春光学精密机械与物... [1]
• 西安光学精密机械研究... [1]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [1]
• 期刊论文 [1]

发表日期

• 2022 [1]
• 2006 [1]

学科主题

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择提交时间升序提交时间降序发表日期升序发表日期降序题名升序题名降序作者升序作者降序 Comparative study on the copper plasma confined with upward and downward conical cavities in laser-induced breakdown spectroscopy 期刊论文  OAI收割 SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2022, 卷号: 197 作者:  Xu, Boping;  Liu, Yinghua;  Lei, Bingying;  Wang, Jing;  Zhang, Wenfu   |  收藏  |  浏览/下载：26/0  |  提交时间：2022/10/14 Spatially confined LIBS  Conical cavity  Shockwave  Fast imaging   The full hemisphere integrating measurement of the reflectance of black cavity (EI CONFERENCE) 会议论文  OAI收割 ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wang Y.;  Yu B.;  Wang Y.;  Wang Y.;  Wang Y. 收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25 The conical black cavities are used in the Solar Irradiance Absolute Radiometers (SIARs) of the solar constant monitor aboard on the SZ spaceship and of the Solar Total Irradiance Monitor (STIM) aboard on sun-synchronous polar orbit weather satellites. A low reflectance measurement instrument which is used for making the integrating measurement on the reflectance of the conical black cavity in a high precision within the full hemisphere (include the entrance of the Ulbrichtsphere) has been constructed. The characteristic of the instrument is the employment of a semi-transparent mirror  which is mounted in an inclination angle of 45 degrees in front of the entrance of the Ulbrichtsphere. The incident beam is reflected to the black cavity or white board by the semi-transparent mirror. A portion of those  which is made diffused reflection through the black cavity or white board  is measured by the detector located in the side face of the Ulbrichtsphere  and the other portion which is reflected to the entrance is measured by the other detector  after passing through the semi-transparent mirror  and then being focused on by an ellipsoidal mirror. The two measurement data are added up to get the integrating reflectance within full hemisphere. The presentation and verification on the measurement result of the reflectance of the black cavity and its precision are described in this article. The absolute accuracy can reach 0.012%.