中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Changes in Tintinnid Assemblages from Subantarctic Zone to Antarctic Zone Along Transect in Amundsen Sea(West Antarctica) in Early Austral Autumn CNKI期刊论文  OAI收割
2020
作者:  
LIANG Chen;  LI Haibo;  ZHANG Wuchang;  TAO Zhencheng;  ZHAO Yuan
  |  收藏  |  浏览/下载:2/0  |  提交时间:2024/12/18
A prototype study of the POLAR front-end electronics 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2011, 卷号: 659, 期号: 1, 页码: 322-327
作者:  
Sun JC(孙建超);  Wu BB(吴伯冰);  Zhang YJ(张永杰);  Lu YP(卢云鹏);  Li YG(李延国)
收藏  |  浏览/下载:32/0  |  提交时间:2016/06/27
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:18/0  |  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%.