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Title: Radioactive ion detector

Apparatus for detecting the presence, in aqueous media, of substances which emit alpha and/or beta radiation and determining the oxidation state of these radioactive substances, that is, whether they are in cationic or anionic form. In one embodiment, a sensor assembly has two elements, one comprised of an ion-exchange material which binds cations and the other comprised of an ion-exchange material which binds anions. Each ion-exchange element is further comprised of a scintillation plastic and a photocurrent generator. When a radioactive substance to which the sensor is exposed binds to either element and emits alpha or beta particles, photons produced in the scintillation plastic illuminate the photocurrent generator of that element. Sensing apparatus senses generator output and thereby indicates whether cationic species or anionic species or both are present and also provides an indication of species quantity. 2 figs.
Authors:
;
Publication Date:
OSTI Identifier:
527754
Report Number(s):
US 5,656,817/A/
PAN: US patent application 8-608,345; TRN: 97:016700
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 12 Aug 1997
Research Org:
University of California
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; ALPHA DETECTION; BETA DETECTION; PLASTIC SCINTILLATION DETECTORS; CATIONS; ANIONS; ION EXCHANGE MATERIALS; VALENCE; RADIOACTIVE MATERIALS; DESIGN