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Proceedings Paper

Fiber optics based ion discriminator
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Paper Abstract

Radiation detector capable of discriminating between different species of high energy ions is of great demand by aerospace and high energy physics communities. We propose the optical fiber-based real time ion detector and discriminator, which can have long lifetime in radiation environment, can be compact and low production cost. The basis of detector's principle of operation is the strong dependence of the pattern of energy dissipation with ion penetration depth in the matter on the type of the ion. Another key phenomenon enabling our fiber optic based detector is the refractive index change in optical fiber in the vicinity of particle track due to the dissipated energy. These two effects provide the opportunity to measure the energy dissipation versus penetration depth as well as total energy released simultaneously in real time with a single detector. Thus, different types of ions can be distinguished by measuring total energy dissipated and energy dissipation versus distance. To discriminate between ions species we propose to use measurement of the Bragg peak position. Total energy dissipated by the particle in the detector material and determination of the Bragg peak position gives the full information on the kind of the incident ion as confirmed via simulations.

Paper Details

Date Published: 8 April 2008
PDF: 7 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 69322J (8 April 2008); doi: 10.1117/12.777194
Show Author Affiliations
Roman Ostroumov, Luna Innovations, Inc. (United States)
Vladimir Kochergin, Luna Innovations, Inc. (United States)
Robert Fielder, Luna Innovations, Inc. (United States)

Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)

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