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Title: Simple system for measuring tritium Ad/absorption using a 2. pi. counter and thermal desorption spectrometer

Abstract

In this paper, the authors develop a simple system using tritium tracer and thermal desorption techniques to measure the tritium adsorption and/or absorption on/in a material having typical surface conditions: namely, not cleaned surface. The tritium counting devices used were a 2{pi} counter and conventional proportional counter. With this system, the amounts of ad/absorption could be measured without exposing the samples to air after exposing them to tritium gas. The overall efficiency (F) of the 2{pi} counter was described at F = exp({minus}2.64h), where h is the distance from the sample to the detector. Ad/absorption measurements were carried out for several materials used for fabricating conventional vacuum systems. The results were, in the order of decreasing amounts of ad/absorption, as (fiber reinforced plastics(FRP)) {gt} (nickel(Ni), molybdenum disulfide(MoS{sub 2})) {gt} (stainless steel (SS304), iron(Fe), aluminum alloy(A2219)) {gt} (boron nitride(h-BN), silicon carbide (SiC), SS304 passivated by anodic oxidation layers(ASS) and that by boron nitride segregation layers (BSS)). The relative amounts were abut 100 for Ni and 0.1 for ASS and BSS, being normalized to Fe = 1.

Authors:
; ;  [1];  [2]
  1. (Hydrogen Isotope Research Center, Toyama Univ., Gofuku 3190, Toyama 930 (JP))
  2. (Tritium Research Lab., Sandia National Lab., Livermore, CA (US))
Publication Date:
OSTI Identifier:
5129885
Alternate Identifier(s):
OSTI ID: 5129885
Report Number(s):
CONF-910920--
Journal ID: ISSN 0748-1896; CODEN: FUSTE
Resource Type:
Conference
Resource Relation:
Journal Name: Fusion Technology; (United States); Journal Volume: 21:2; Conference: 4. topical meeting on tritium technology in fission, fusion, and isotopic applications, Albuquerque, NM (United States), 29 Sep - 4 Oct 1991
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Ma; 47 OTHER INSTRUMENTATION; COUNTING TECHNIQUES; FABRICATION; TRITIUM; ADSORPTION; ABSORPTION; DESIGN; DESORPTION; DIAGNOSTIC TECHNIQUES; EFFICIENCY; MATERIALS; MEASURING METHODS; SPECTROSCOPY; TEMPERATURE EFFECTS; TRACER TECHNIQUES; VACUUM SYSTEMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; HYDROGEN ISOTOPES; ISOTOPE APPLICATIONS; ISOTOPES; LIGHT NUCLEI; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; SORPTION; YEARS LIVING RADIOISOTOPES 700480* -- Fusion Technology-- Component Development; Materials Studies-- (1992-); 440800 -- Miscellaneous Instrumentation-- (1990-)

Citation Formats

Miyake, H., Matsuyama, M., Watanabe, K., and Cowgill, D.F. Simple system for measuring tritium Ad/absorption using a 2. pi. counter and thermal desorption spectrometer. United States: N. p., 1992. Web.
Miyake, H., Matsuyama, M., Watanabe, K., & Cowgill, D.F. Simple system for measuring tritium Ad/absorption using a 2. pi. counter and thermal desorption spectrometer. United States.
Miyake, H., Matsuyama, M., Watanabe, K., and Cowgill, D.F. Sun . "Simple system for measuring tritium Ad/absorption using a 2. pi. counter and thermal desorption spectrometer". United States.
@article{osti_5129885,
title = {Simple system for measuring tritium Ad/absorption using a 2. pi. counter and thermal desorption spectrometer},
author = {Miyake, H. and Matsuyama, M. and Watanabe, K. and Cowgill, D.F.},
abstractNote = {In this paper, the authors develop a simple system using tritium tracer and thermal desorption techniques to measure the tritium adsorption and/or absorption on/in a material having typical surface conditions: namely, not cleaned surface. The tritium counting devices used were a 2{pi} counter and conventional proportional counter. With this system, the amounts of ad/absorption could be measured without exposing the samples to air after exposing them to tritium gas. The overall efficiency (F) of the 2{pi} counter was described at F = exp({minus}2.64h), where h is the distance from the sample to the detector. Ad/absorption measurements were carried out for several materials used for fabricating conventional vacuum systems. The results were, in the order of decreasing amounts of ad/absorption, as (fiber reinforced plastics(FRP)) {gt} (nickel(Ni), molybdenum disulfide(MoS{sub 2})) {gt} (stainless steel (SS304), iron(Fe), aluminum alloy(A2219)) {gt} (boron nitride(h-BN), silicon carbide (SiC), SS304 passivated by anodic oxidation layers(ASS) and that by boron nitride segregation layers (BSS)). The relative amounts were abut 100 for Ni and 0.1 for ASS and BSS, being normalized to Fe = 1.},
doi = {},
journal = {Fusion Technology; (United States)},
number = ,
volume = 21:2,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 1992},
month = {Sun Mar 01 00:00:00 EST 1992}
}

Conference:
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