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Title: Apparatus for detecting alpha radiation in difficult access areas

Abstract

An electrostatic alpha radiation detector for measuring alpha radiation emitted from inside an enclosure comprising an electrically conductive expandable electrode for insertion into the enclosure is disclosed. After insertion, the electrically conductive expandable electrode is insulated from the enclosure and defines a decay cavity between the electrically conductive expandable electrode and the enclosure so that air ions generated in the decay cavity are electrostatically captured by the electrically conductive expandable electrode and the enclosure when an electric potential is applied between the electrically conductive expandable electrode and the enclosure. Indicator means are attached to the electrically conductive expandable electrode for indicating an electrical current produced by generation of the air ions generated in the decay cavity by collisions between air molecules and the alpha particles emitted from the enclosure. A voltage source is connected between the indicator means and the electrically conductive enclosure for creating an electric field between the electrically conductive expandable electrode and the enclosure. 4 figs.

Inventors:
;
Issue Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
527787
Patent Number(s):
5,663,567
Application Number:
PAN: 8-657,744; TRN: 97:016703
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 440101; PA: EDB-97:126832; SN: 97001846771
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 2 Sep 1997
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; ALPHA DETECTION; RADIATION DETECTORS; GLOVEBOXES; ELECTRODES; ELECTRIC CONDUCTIVITY; DESIGN

Citation Formats

Steadman, P., and MacArthur, D.W. Apparatus for detecting alpha radiation in difficult access areas. United States: N. p., 1997. Web.
Steadman, P., & MacArthur, D.W. Apparatus for detecting alpha radiation in difficult access areas. United States.
Steadman, P., and MacArthur, D.W. Tue . "Apparatus for detecting alpha radiation in difficult access areas". United States.
@article{osti_527787,
title = {Apparatus for detecting alpha radiation in difficult access areas},
author = {Steadman, P. and MacArthur, D.W.},
abstractNote = {An electrostatic alpha radiation detector for measuring alpha radiation emitted from inside an enclosure comprising an electrically conductive expandable electrode for insertion into the enclosure is disclosed. After insertion, the electrically conductive expandable electrode is insulated from the enclosure and defines a decay cavity between the electrically conductive expandable electrode and the enclosure so that air ions generated in the decay cavity are electrostatically captured by the electrically conductive expandable electrode and the enclosure when an electric potential is applied between the electrically conductive expandable electrode and the enclosure. Indicator means are attached to the electrically conductive expandable electrode for indicating an electrical current produced by generation of the air ions generated in the decay cavity by collisions between air molecules and the alpha particles emitted from the enclosure. A voltage source is connected between the indicator means and the electrically conductive enclosure for creating an electric field between the electrically conductive expandable electrode and the enclosure. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {9}
}