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Title: An ultra-thin diamond membrane as a transmission particle detector and vacuum window for external microbeams

Several applications of external microbeam techniques demand a very accurate and controlled dose delivery. To satisfy these requirements when post-sample ion detection is not feasible, we constructed a transmission single-ion detector based on an ultra-thin diamond membrane. The negligible intrinsic noise provides an excellent signal-to-noise ratio and enables a hit-detection efficiency of close to 100%, even for energetic protons, while the small thickness of the membrane limits beam spreading. Moreover, because of the superb mechanical stiffness of diamond, this membrane can simultaneously serve as a vacuum window and allow the extraction of an ion microbeam into the atmosphere.
Authors:
; ;  [1] ;  [2] ;  [3] ; ; ;  [4]
  1. Division of Experimental Physics, Ruđer Bošković Institute, 10000 Zagreb (Croatia)
  2. CEA-LIST, Diamond Sensors Laboratory, Gif-sur-Yvette F-91191 (France)
  3. Division of Electronics and Informatics, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515 (Japan)
  4. Takasaki Advanced Radiation Research Institute, Japan Atomic Energy Agency (JAEA), Takasaki, Gunma 370-1292 (Japan)
Publication Date:
OSTI Identifier:
22217756
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 24; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DIAMONDS; DOSES; EFFICIENCY; FLEXIBILITY; ION BEAMS; ION DETECTION; MEMBRANES; NOISE; PARTICLE BEAMS; PROTONS; SEMICONDUCTOR DETECTORS; SIGNAL-TO-NOISE RATIO; THICKNESS