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Title: RadTracker: Optical Imaging of High Energy Radiation Tracks

Abstract

This project examined the possibility of extending the recently demonstrated radoptic detection approach to gamma imaging. Model simulations of the light scattering process predicted that expected signal levels were small and likely below the detection limit of large area, room-temperature detectors. A series of experiments using pulsed x-ray excitation, modulated gamma excitation and optical pump-probe methods confirmed those theoretical predictions. At present the technique does not appear to provide a viable approach to volumetric radiation detection; however, in principal, orders of magnitude improvement in the SNR can result by using designer materials to concentrate and localize the radiation-absorption induced charge, simultaneously confining the optical mode to increase 'fill' factor and overlap of the probe beam with the affected regions, and employing high speed gated imaging detectors to measure the scattered signal.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1036868
Report Number(s):
UCRL-TR-230646
TRN: US1201530
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DETECTION; EXCITATION; LIGHT SCATTERING; OPTICAL MODES; PROBES; RADIATION DETECTION; RADIATIONS; SENSITIVITY; VELOCITY

Citation Formats

Vernon, S P, Lowry, M E, Comaskey, B J, Heebner, J E, Kallman, J S, and Richards, J B. RadTracker: Optical Imaging of High Energy Radiation Tracks. United States: N. p., 2007. Web. doi:10.2172/1036868.
Vernon, S P, Lowry, M E, Comaskey, B J, Heebner, J E, Kallman, J S, & Richards, J B. RadTracker: Optical Imaging of High Energy Radiation Tracks. United States. doi:10.2172/1036868.
Vernon, S P, Lowry, M E, Comaskey, B J, Heebner, J E, Kallman, J S, and Richards, J B. Fri . "RadTracker: Optical Imaging of High Energy Radiation Tracks". United States. doi:10.2172/1036868. https://www.osti.gov/servlets/purl/1036868.
@article{osti_1036868,
title = {RadTracker: Optical Imaging of High Energy Radiation Tracks},
author = {Vernon, S P and Lowry, M E and Comaskey, B J and Heebner, J E and Kallman, J S and Richards, J B},
abstractNote = {This project examined the possibility of extending the recently demonstrated radoptic detection approach to gamma imaging. Model simulations of the light scattering process predicted that expected signal levels were small and likely below the detection limit of large area, room-temperature detectors. A series of experiments using pulsed x-ray excitation, modulated gamma excitation and optical pump-probe methods confirmed those theoretical predictions. At present the technique does not appear to provide a viable approach to volumetric radiation detection; however, in principal, orders of magnitude improvement in the SNR can result by using designer materials to concentrate and localize the radiation-absorption induced charge, simultaneously confining the optical mode to increase 'fill' factor and overlap of the probe beam with the affected regions, and employing high speed gated imaging detectors to measure the scattered signal.},
doi = {10.2172/1036868},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Mar 02 00:00:00 EST 2007},
month = {Fri Mar 02 00:00:00 EST 2007}
}

Technical Report:

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