Three-dimensional optical random access memory materials for use as radiation dosimeters.

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • Cullum, BM; Mobley, J; Bogard, JS; Moscovitch, M; Phillips, GW; Vo-Dinh, T

Published Date

  • November 2000

Published In

Volume / Issue

  • 72 / 22

Start / End Page

  • 5612 - 5617

PubMed ID

  • 11101239

Electronic International Standard Serial Number (EISSN)

  • 1520-6882

International Standard Serial Number (ISSN)

  • 0003-2700

Digital Object Identifier (DOI)

  • 10.1021/ac000638t


  • eng