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...

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Bibliographic Details
Published in:Applied physics letters 2013-12, Vol.103 (24)
Main Authors: Grilj, V., Skukan, N., Pomorski, M., Kada, W., Iwamoto, N., Kamiya, T., Ohshima, T., Jakšić, M.
Format: Article
Language:English
Subjects:
Applied physics
DIAMONDS
DOSES
EFFICIENCY
Engineering Sciences
FLEXIBILITY
Instrumentation and Detectors
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ION BEAMS
ION DETECTION
Ion detectors
MEMBRANES
Micro and nanotechnologies
Microbeams
Microelectronics
NOISE
Nuclear Experiment
PARTICLE BEAMS
Physics
PROTONS
Radiation counters
SEMICONDUCTOR DETECTORS
SIGNAL-TO-NOISE RATIO
Stiffness
THICKNESS
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Summary: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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4833236