| Publications [#262948] of Tuan Vo-Dinh
Papers Published
- Cullum, BM; Mobley, J; Bogard, JS; Moscovitch, M; Phillips, GW; Vo-Dinh, T, Three-dimensional optical random access memory materials for use as radiation dosimeters.,
Analytical chemistry, vol. 72 no. 22
(November, 2000),
pp. 5612-5617, ISSN 0003-2700 [11101239], [doi]
(last updated on 2024/03/28)
Abstract: This article describes the development of the first three-dimensional optical random access memory (3D-ORAM) material and readout system for monitoring energetic neutrons. Two different photochromic dyes, 5'-chloro-6-nitro-1',3',3'-trimethylspiro-[2H-1-benzopyran-2,2'-in doline] (spirobenzopyran) and anthracene, have been investigated for use in these 3-D ORAM dosimeter materials. These dyes were immobilized in a poly(methyl methacrylate) support, and the resulting dosimeter materials were irradiated with neutrons from a Cf-252 source. Fluorescence measurements from the dosimeter show a dramatic decrease in the overall fluorescence intensity of the 3D-ORAM dosimeter exposed to the Cf-252, relative to a nonirradiated dosimeter. In addition, a two-photon excitation readout system has been developed for determining characteristics of the radiation that are necessary for estimating dose.
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