Monte Carlo Simulation of Helium Transport in the Vicinity of Divertor Plate
A Monte Carlo code “1DHET” has been utilized for simulating the transport of neutral helium near divertor flat pumping target plate. The dominant atomic processes of electron impact ionization and elastic scattering by plasma ions are included. The thermal and streaming motion of the ions along the...
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| Veröffentlicht in: | Contributions to plasma physics (1985) 1993, Vol.33 (1), p.35-41 |
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| container_title | Contributions to plasma physics (1985) |
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| creator | Deng, B. Q. Xie, Zh. Y. Shi, H. W. Abou-gabal, H. H. Emmert, G. A. |
| description | A Monte Carlo code “1DHET” has been utilized for simulating the transport of neutral helium near divertor flat pumping target plate. The dominant atomic processes of electron impact ionization and elastic scattering by plasma ions are included. The thermal and streaming motion of the ions along the magnetic field is taken into consideration. Calculations show that the probability of neutral helium turning back to the target plate will increase by 45% if the divertor edge plasma density is smoothly raised up to 4.7 times higher at the divertor plate than that at 7cm apart inward as compared with the ordinary outward decreasing density profile while keeping temperature profile fixed. The temperature decreases smoothly from 40 eV at z = 7 cm to 3 eV at the plate. The effects of angle between the magnetic field and the target plate, the temperature of plate, edge plasma sheath potential and different target materials on the probability of helium particles scattered back to the plate are studied. |
| doi_str_mv | 10.1002/ctpp.2150330106 |
| format | Article |
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Q. ; Xie, Zh. Y. ; Shi, H. W. ; Abou-gabal, H. H. ; Emmert, G. A.</creator><creatorcontrib>Deng, B. Q. ; Xie, Zh. Y. ; Shi, H. W. ; Abou-gabal, H. H. ; Emmert, G. A.</creatorcontrib><description>A Monte Carlo code “1DHET” has been utilized for simulating the transport of neutral helium near divertor flat pumping target plate. The dominant atomic processes of electron impact ionization and elastic scattering by plasma ions are included. The thermal and streaming motion of the ions along the magnetic field is taken into consideration. Calculations show that the probability of neutral helium turning back to the target plate will increase by 45% if the divertor edge plasma density is smoothly raised up to 4.7 times higher at the divertor plate than that at 7cm apart inward as compared with the ordinary outward decreasing density profile while keeping temperature profile fixed. The temperature decreases smoothly from 40 eV at z = 7 cm to 3 eV at the plate. The effects of angle between the magnetic field and the target plate, the temperature of plate, edge plasma sheath potential and different target materials on the probability of helium particles scattered back to the plate are studied.</description><identifier>ISSN: 0863-1042</identifier><identifier>EISSN: 1521-3986</identifier><identifier>DOI: 10.1002/ctpp.2150330106</identifier><identifier>CODEN: BPPHAA</identifier><language>eng</language><publisher>Berlin: WILEY-VCH Verlag</publisher><subject>Exact sciences and technology ; Physics ; Physics of gases, plasmas and electric discharges ; Physics of plasmas and electric discharges ; Plasma properties</subject><ispartof>Contributions to plasma physics (1985), 1993, Vol.33 (1), p.35-41</ispartof><rights>Copyright © 1993 WILEY‐VCH Verlag GmbH & Co. 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Calculations show that the probability of neutral helium turning back to the target plate will increase by 45% if the divertor edge plasma density is smoothly raised up to 4.7 times higher at the divertor plate than that at 7cm apart inward as compared with the ordinary outward decreasing density profile while keeping temperature profile fixed. The temperature decreases smoothly from 40 eV at z = 7 cm to 3 eV at the plate. The effects of angle between the magnetic field and the target plate, the temperature of plate, edge plasma sheath potential and different target materials on the probability of helium particles scattered back to the plate are studied.</description><subject>Exact sciences and technology</subject><subject>Physics</subject><subject>Physics of gases, plasmas and electric discharges</subject><subject>Physics of plasmas and electric discharges</subject><subject>Plasma properties</subject><issn>0863-1042</issn><issn>1521-3986</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNqFkDFPwzAQRi0EEqUws3pgTeuzHScREwrQIhVoRaGj5TiOMKRJZKdA_z2pgoqYmG64732newidAxkBIXSs26YZUQgJYwSIOEADCCkELInFIRqQWLAACKfH6MT7N0JIIjgM0Oy-rlqDU-XKGj_Z9aZUra0rXBd4akq7WeOlU5VvatdiW-H21eAXq21l2-0uc20_jGtrh-cdZ07RUaFKb85-5hA9394s02kwe5zcpVezQDNBRCAAWKSyMNNxDplmCnTIY56TSJss5hRMRpKC5pRGIowF77aF1jSDIi8UpQkbonHfq13tvTOFbJxdK7eVQOROhtzJkL8yOuKiJxrltSqL7idt_R7jQogkpl3sso992tJs_2uV6XI-_3Mk6GnrW_O1p5V7lyJiUShXDxO5WAlOOCwksG_dNn_e</recordid><startdate>1993</startdate><enddate>1993</enddate><creator>Deng, B. 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A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3606-61137ab5bc8d1bc3a1c5484d07ceb8421eb09f2d22765864c54fcc2b1fdfa2293</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Exact sciences and technology</topic><topic>Physics</topic><topic>Physics of gases, plasmas and electric discharges</topic><topic>Physics of plasmas and electric discharges</topic><topic>Plasma properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Deng, B. Q.</creatorcontrib><creatorcontrib>Xie, Zh. Y.</creatorcontrib><creatorcontrib>Shi, H. W.</creatorcontrib><creatorcontrib>Abou-gabal, H. H.</creatorcontrib><creatorcontrib>Emmert, G. A.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Contributions to plasma physics (1985)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Deng, B. Q.</au><au>Xie, Zh. Y.</au><au>Shi, H. W.</au><au>Abou-gabal, H. H.</au><au>Emmert, G. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Monte Carlo Simulation of Helium Transport in the Vicinity of Divertor Plate</atitle><jtitle>Contributions to plasma physics (1985)</jtitle><addtitle>Contrib. Plasma Phys</addtitle><date>1993</date><risdate>1993</risdate><volume>33</volume><issue>1</issue><spage>35</spage><epage>41</epage><pages>35-41</pages><issn>0863-1042</issn><eissn>1521-3986</eissn><coden>BPPHAA</coden><abstract>A Monte Carlo code “1DHET” has been utilized for simulating the transport of neutral helium near divertor flat pumping target plate. The dominant atomic processes of electron impact ionization and elastic scattering by plasma ions are included. The thermal and streaming motion of the ions along the magnetic field is taken into consideration. Calculations show that the probability of neutral helium turning back to the target plate will increase by 45% if the divertor edge plasma density is smoothly raised up to 4.7 times higher at the divertor plate than that at 7cm apart inward as compared with the ordinary outward decreasing density profile while keeping temperature profile fixed. The temperature decreases smoothly from 40 eV at z = 7 cm to 3 eV at the plate. The effects of angle between the magnetic field and the target plate, the temperature of plate, edge plasma sheath potential and different target materials on the probability of helium particles scattered back to the plate are studied.</abstract><cop>Berlin</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/ctpp.2150330106</doi><tpages>7</tpages></addata></record> |
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| subjects | Exact sciences and technology Physics Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges Plasma properties |
| title | Monte Carlo Simulation of Helium Transport in the Vicinity of Divertor Plate |
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