翻訳と辞書 Words near each other ・ Picard–Vessiot theory ・ Picaresque (album) ・ Picaresque (disambiguation) ・ Picaresque novel ・ Picaresqueties ・ Picaria ・ Picarin ・ Picarones ・ Picaroon (horse) ・ Picaroons Traditional Ales ・ Picarquín, Chile ・ Picarreau ・ Picasa ・ Picasa Web Albums ・ Picassent ・ PICASSO ・ Picasso & Lump ・ Picasso (album) ・ Picasso (band) ・ Picasso (crater) ・ Picasso (disambiguation) ・ Picasso (play) ・ Picasso (restaurant) ・ Picasso and the Ballets Russes ・ Picasso Animation College ・ Picasso at the Lapin Agile ・ Picasso Baby ・ Picasso clownfish ・ Picasso Museum ・ Picasso Nelson Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク PICASSO ： ウィキペディア英語版 PICASSO The PICASSO (Project in Canada to Search for Supersymmetric Objects, or Projet d'Identification de CAndidats Supersymétriques SOmbres in French) experiment is an experiment searching for direct evidence of dark matter. It is located at SNOLAB in Canada, and consists of an international collaboration with members from the Université de Montréal, Queen's University, Indiana University South Bend and Czech Technical University in Prague, University of Alberta, Laurentian University and BTI, Chalk River, Ontario. It uses bubble detectors with Freon as the active mass. PICASSO is predominantly sensitive to spin-dependent interactions of Weakly Interacting Massive Particles (WIMPs) with fluorine atoms. ==Principle== A bubble detector is a radiation sensitive device that uses small droplets of superheated liquid that are suspended in a gel matrix.〔http://www.bubbletech.ca/radiation_detectors_files/bubble_detectors.html〕 It uses the principle of a bubble chamber but since only the small droplets can undergo a phase transition at a time, the detector can stay active for much longer periods than a classic bubble chamber. When enough energy is deposited in a droplet by ionizing radiation the superheated droplet undergoes a phase transition and becomes a gas bubble. The PICASSO detectors contain Freon droplets with an average diameter of . The bubble development in the detector is accompanied by an acoustic shock wave that is picked up by piezo-electric sensors. The main advantage of the bubble detector technique is that the detector is almost insensitive to background radiation. The detector sensitivity can be adjusted by changing the temperature of the droplets. Freon-loaded detectors are typically operated at temperatures between and . The validity of the bubble detector concept has been shown in several publications.〔http://www.slac.stanford.edu/spires/find/hep/www?rawcmd=find+collaboration+picasso&FORMAT=WWW&SEQUENCE=〕 There is another similar experiment using this technique in Europe called SIMPLE. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PICASSO」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.