High-temperature mass spectrometry using the Knudsen effusion cell. I-Optimization of sampling constraints on the molecular beam
Identifieur interne : 00D022 ( Main/Exploration ); précédent : 00D021; suivant : 00D023High-temperature mass spectrometry using the Knudsen effusion cell. I-Optimization of sampling constraints on the molecular beam
Auteurs : P. Morland [Australie] ; C. Chatillon [France] ; P. Rocabois [France]Source :
- High temperature and materials science [ 1080-1278 ] ; 1997.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Chimie analytique.
English descriptors
- KwdEn :
Abstract
High-temperature molecular beam sampling in mass spectrometry may be disturbed by several phenomena that are related to the physico-chemical interactions of the evaporated species with their Knudsen cells and furnaces. To avoid the mass spectrometric detection of such parasitic vapors intermixed with the sampled beam, the principle of a restricted collimation is proposed and its transmission optimization is performed. The efficiency of such a device is compared to analogous classical Knudsen-cell mass spectrometric devices, which are usually four times more efficient. The advantages of the restricted collimation are discussed regarding the removing of spatial discrimination in ionization chambers, the influence on the second and third law calculation uncertainties, the mounting and use of shutters in case of permanent-gas detection, and finally the revaporizations in the ionization chamber.
Affiliations:
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Chatillon</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Thermodynamique et Physico-Chimie Metallurgiques</s1><s2>Saint Martin d'Heres</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Saint-Martin-d'Hères</settlement><settlement type="city" wicri:auto="agglo">Grenoble</settlement></placeName></affiliation></author><author><name sortKey="Rocabois, P" sort="Rocabois, P" uniqKey="Rocabois P" first="P." last="Rocabois">P. Rocabois</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Thermodynamique et Physico-Chimie Metallurgiques</s1><s2>Saint Martin d'Heres</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Saint-Martin-d'Hères</settlement><settlement type="city" wicri:auto="agglo">Grenoble</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">98-0192894</idno><date when="1997">1997</date><idno type="stanalyst">PASCAL 98-0192894 INIST</idno><idno type="RBID">Pascal:98-0192894</idno><idno type="wicri:Area/PascalFrancis/Corpus">006765</idno><idno type="wicri:Area/PascalFrancis/Curation">006897</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">006723</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">006723</idno><idno type="wicri:doubleKey">1080-1278:1997:Morland P:high:temperature:mass</idno><idno type="wicri:Area/Main/Merge">00E159</idno><idno type="wicri:Area/Main/Curation">00D022</idno><idno type="wicri:Area/Main/Exploration">00D022</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">High-temperature mass spectrometry using the Knudsen effusion cell. I-Optimization of sampling constraints on the molecular beam</title><author><name sortKey="Morland, P" sort="Morland, P" uniqKey="Morland P" first="P." last="Morland">P. Morland</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Mining and Metallurgical Engineering, University of Queensland</s1><s2>St. Lucia</s2><s3>AUS</s3><sZ>1 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>St. Lucia</wicri:noRegion></affiliation></author><author><name sortKey="Chatillon, C" sort="Chatillon, C" uniqKey="Chatillon C" first="C." last="Chatillon">C. Chatillon</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Thermodynamique et Physico-Chimie Metallurgiques</s1><s2>Saint Martin d'Heres</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Saint-Martin-d'Hères</settlement><settlement type="city" wicri:auto="agglo">Grenoble</settlement></placeName></affiliation></author><author><name sortKey="Rocabois, P" sort="Rocabois, P" uniqKey="Rocabois P" first="P." last="Rocabois">P. Rocabois</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire de Thermodynamique et Physico-Chimie Metallurgiques</s1><s2>Saint Martin d'Heres</s2><s3>FRA</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region><settlement type="city">Saint-Martin-d'Hères</settlement><settlement type="city" wicri:auto="agglo">Grenoble</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">High temperature and materials science</title><title level="j" type="abbreviated">High temp. mat. sci.</title><idno type="ISSN">1080-1278</idno><imprint><date when="1997">1997</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">High temperature and materials science</title><title level="j" type="abbreviated">High temp. mat. sci.</title><idno type="ISSN">1080-1278</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Analytical chemistry</term><term>Evaporation</term><term>High temperature</term><term>Knudsen effusion</term><term>Mass spectrometry</term><term>Sampling</term><term>Theoretical study</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Effusion Knudsen</term><term>Spectrométrie masse</term><term>Echantillonnage</term><term>Haute température</term><term>Evaporation</term><term>Chimie analytique</term><term>Etude théorique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Chimie analytique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">High-temperature molecular beam sampling in mass spectrometry may be disturbed by several phenomena that are related to the physico-chemical interactions of the evaporated species with their Knudsen cells and furnaces. To avoid the mass spectrometric detection of such parasitic vapors intermixed with the sampled beam, the principle of a restricted collimation is proposed and its transmission optimization is performed. The efficiency of such a device is compared to analogous classical Knudsen-cell mass spectrometric devices, which are usually four times more efficient. The advantages of the restricted collimation are discussed regarding the removing of spatial discrimination in ionization chambers, the influence on the second and third law calculation uncertainties, the mounting and use of shutters in case of permanent-gas detection, and finally the revaporizations in the ionization chamber.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li></region><settlement><li>Grenoble</li><li>Saint-Martin-d'Hères</li></settlement></list><tree><country name="Australie"><noRegion><name sortKey="Morland, P" sort="Morland, P" uniqKey="Morland P" first="P." last="Morland">P. Morland</name></noRegion></country><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Chatillon, C" sort="Chatillon, C" uniqKey="Chatillon C" first="C." last="Chatillon">C. Chatillon</name></region><name sortKey="Rocabois, P" sort="Rocabois, P" uniqKey="Rocabois P" first="P." last="Rocabois">P. Rocabois</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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