Volume recombination in divertor I of ASDEX Upgrade

被引：42

作者：

Wenzel, U ^{[1
]}

Behringer, K

Carlson, A

Gafert, J

Napiontek, B

Thoma, A

机构：

[1] Max Planck Inst Plasmaphys, EURATOM Assoc, Berlin, Germany

[2] Max Planck Inst Plasmaphys, EURATOM Assoc, Garching, Germany

来源：

NUCLEAR FUSION | 1999年 / 39卷 / 07期

关键词：

D O I：

10.1088/0029-5515/39/7/304

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

High density operation in the ASDEX Upgrade divertor I with horizontal target plates is reported. Density rampup experiments were carried out to characterize detached plasma conditions in the divertor. During the detached phases, hydrogen continue and spectral line emission from high-n shells were observed in the divertor due to the volume recombination. The spectroscopic measurements provide a consistent picture of the evolution of the divertor plasma parameters during the density ramp. By means of the ADAS atomic physics program package, the rate of volume recombination was evaluated, including the effect of opacity. The relative importance of volume recombination in comparison with the target plasma sink is discussed. Observations indicating differences in Volume recombination between the two divertor legs are presented, and the connection of volume recombination to divertor detachment is addressed.

引用

页码：873 / 882

页数：10

共 26 条

[1]

BEHRINGER K, 1998, 1011 IPP MAXPL I PLA

[2] COMPARISON BETWEEN MEASURED AND THEORETICAL STARK-BROADENED PROFILES OF H6-H12 EMITTED FROM A LOW-DENSITY PLASMA [J].

BENGTSON, RD ;

TANNICH, JD ;

KEPPLE, P .

PHYSICAL REVIEW A, 1970, 1 (02) :532-&

[3] Study of recombining gas targets [J].

Borrass, K ;

Coster, D ;

Reiter, D ;

Schneider, R .

JOURNAL OF NUCLEAR MATERIALS, 1997, 241 :250-254

[4] A spatially scanning vacuum ultraviolet and visible range spectrometer for spectroscopy of tokamak plasmas in ASDEX-Upgrade [J].

Field, AR ;

Fink, J ;

Dux, R ;

Fussmann, G ;

Wenzel, U ;

Schumacher, U .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (12) :5433-5441

[5] Cross-field diffusion by charge changing processes [J].

Fussmann, G .

CONTRIBUTIONS TO PLASMA PHYSICS, 1997, 37 (04) :363-375

[6]

Griem HR, 1964, Plasma Spectroscopy

[7] PHYSICS BACKGROUND OF THE ASDEX UPGRADE PROJECT [J].

GRUBER, O ;

KAUFMANN, M ;

KOPPENDORFER, W ;

LACKNER, K ;

NEUHAUSER, J .

JOURNAL OF NUCLEAR MATERIALS, 1984, 121 :407-414

[8] Signatures of deuterium recombination in the DIII-D divertor [J].

Isler, RC ;

McKee, GR ;

Brooks, NH ;

West, WP ;

Fenstermacher, ME ;

Wood, RD .

PHYSICS OF PLASMAS, 1997, 4 (08) :2989-2996

[9]

KASTELEWICZ H, 1998, CONTROLLED FUSION C, V22, P1852

[10] Plasma recombination and molecular effects in tokamak divertors and divertor simulators [J].

Krasheninnikov, SI ;

Pigarov, AY ;

Knoll, DA ;

LaBombard, B ;

Lipschultz, B ;

Sigmar, DJ ;

Soboleva, TK ;

Terry, JL ;

Wising, F .

PHYSICS OF PLASMAS, 1997, 4 (05) :1638-1646

← 1 2 3 →