VELOCITY DISTRIBUTION OF CARBON AND OXYGEN-ATOMS IN FRONT OF A TOKAMAK LIMITER

被引:23
作者
BOGEN, P
RUSBULDT, D
机构
[1] Institut für Plasmaphysik, Forschungszentrum Jülich, Ass. EURATOM-KFA, Postfach 1913
关键词
D O I
10.1016/S0022-3115(06)80027-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
From the Doppler-broadened emission profiles of a CI line (P-3(2) --> P-3(2)0, lambda = 909.5 nm) and of an OI line (P-3(2,1,0) --> S-3(1)0, lambda = 844.6 nm), the velocity distribution of carbon and oxygen atoms in front of a graphite limiter has been deduced. For the pi-component of the CI line, the Zeeman splitting is negligible, but for the pi-components of the OI line, the Paschen-Back effect has to be taken into account. The contribution of chemical and physical sputtering to the release of impurities under various experimental conditions has been investigated at the tip of the limiter. For C atoms, chemical sputtering dominates at low boundary temperatures, and physical sputtering at high temperature. For oxygen, chemical sputtering is always indicated to be the more efficient process.
引用
收藏
页码:179 / 183
页数:5
相关论文
共 15 条
[1]  
BAY HL, 1987, NUCL INSTRUM METH B, V18, P430
[2]   VELOCITY DISTRIBUTION OF CARBON-ATOMS RELEASED FROM A TOKAMAK LIMITER BY CHEMICAL AND PHYSICAL SPUTTERING [J].
BOGEN, P ;
RUSBULDT, D .
NUCLEAR FUSION, 1992, 32 (06) :1057-1061
[3]  
BOGEN P, 1986, PHYSICS PLASMA WALL
[4]  
Condon E. U., 1957, THEORY ATOMIC SPECTR
[6]   A STUDY OF IMPURITY TRANSPORT IN THE PLASMA BOUNDARY OF TEXTOR USING GAS PUFFING [J].
MCCRACKEN, GM ;
SAMM, U ;
FIELDING, SJ ;
MATTHEWS, GF ;
PITTS, RA ;
PITCHER, CS ;
GRAY, D ;
LIE, YT ;
MOYER, RA ;
BERTSCHINGER, G ;
POSPIESZCZYK, A ;
RUSBULDT, D ;
STANGEBY, PC ;
SCHWEER, B ;
ELDER, D .
JOURNAL OF NUCLEAR MATERIALS, 1990, 176 :191-196
[7]   STUDIES OF FUELING RATES OF CO, CH4 AND OXYGEN IN THE TEXTOR TOKAMAK [J].
MCCRACKEN, GM ;
SAMM, U ;
BERTSCHINGER, B ;
PHILIPPS, V ;
PITTS, RA ;
GOODALL, DHJ ;
DAVIES, SJ ;
VANOOST, G ;
POSPIESZCZYK, A ;
SCHORN, R ;
SCHWEER, B ;
STANGEBY, PC ;
TELESCA, G ;
WAIDMANN, G .
JOURNAL OF NUCLEAR MATERIALS, 1992, 196 :199-203
[8]   VELOCITY DISTRIBUTION OF HYDROGEN-ATOMS SPUTTERED FROM METAL-HYDRIDES [J].
MERTENS, P ;
BOGEN, P .
JOURNAL OF NUCLEAR MATERIALS, 1984, 128 (DEC) :551-554
[9]   IMPURITY SOURCES IN TEXTOR [J].
POSPIESZCZYK, A ;
BAY, HL ;
BOGEN, P ;
HARTWIG, H ;
HINTZ, E ;
KONEN, L ;
ROSS, GG ;
RUSBULDT, D ;
SAMM, U ;
SCHWEER, B .
JOURNAL OF NUCLEAR MATERIALS, 1987, 145 :574-579
[10]   EROSION AND IMPURITY PRODUCTION OF C AND BE - A COMPARISON [J].
ROTH, J .
JOURNAL OF NUCLEAR MATERIALS, 1987, 145 :87-95