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Title: Fiber-type dosimeter with improved illuminator

Abstract

A single-piece, molded plastic, Cassigrainian-type condenser arrangement is incorporated in a tubular-shaped personal pocket dosimeter of the type which combines an ionization chamber with an optically-read fiber electrometer to provide improved illumination of the electrometer fiber. The condenser routes incoming light from one end of the dosimeter tubular housing around a central axis charging pin assembly and focuses the light at low angles to the axis so that it falls within the acceptance angle of the electrometer fiber objective lens viewed through an eyepiece lens disposed in the opposite end of the dosimeter. This results in improved fiber illumination and fiber image contrast.

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
866380
Patent Number(s):
4697084
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fiber-type; dosimeter; improved; illuminator; single-piece; molded; plastic; cassigrainian-type; condenser; arrangement; incorporated; tubular-shaped; personal; pocket; type; combines; ionization; chamber; optically-read; fiber; electrometer; provide; illumination; routes; incoming; light; tubular; housing; central; axis; charging; assembly; focuses; angles; falls; acceptance; angle; objective; lens; viewed; eyepiece; disposed; opposite; results; image; contrast; objective lens; pocket dosimeter; provide improved; tubular housing; incoming light; central axis; ionization chamber; acceptance angle; improved fiber; type dosimeter; provide improve; /250/359/

Citation Formats

Fox, Richard J. Fiber-type dosimeter with improved illuminator. United States: N. p., 1987. Web.
Fox, Richard J. Fiber-type dosimeter with improved illuminator. United States.
Fox, Richard J. Thu . "Fiber-type dosimeter with improved illuminator". United States. https://www.osti.gov/servlets/purl/866380.
@article{osti_866380,
title = {Fiber-type dosimeter with improved illuminator},
author = {Fox, Richard J},
abstractNote = {A single-piece, molded plastic, Cassigrainian-type condenser arrangement is incorporated in a tubular-shaped personal pocket dosimeter of the type which combines an ionization chamber with an optically-read fiber electrometer to provide improved illumination of the electrometer fiber. The condenser routes incoming light from one end of the dosimeter tubular housing around a central axis charging pin assembly and focuses the light at low angles to the axis so that it falls within the acceptance angle of the electrometer fiber objective lens viewed through an eyepiece lens disposed in the opposite end of the dosimeter. This results in improved fiber illumination and fiber image contrast.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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