Mass spectrometry analysis of the impurity content in N2 seeded discharges in JET-ILW

被引：13

作者：

Drenik, A. ^{[2
]}

Oberkofler, M. ^{[3
]}

Alegre, D. ^{[4
]}

Kruezi, U. ^{[5
]}

Brezinsek, S. ^{[6
]}

Mozetic, M. ^{[2
]}

Nunes, I. ^{[7
]}

Wischmeier, M. ^{[3
]}

Giroud, C. ^{[5
]}

Maddison, G. ^{[5
]}

Reux, C. ^{[8
]}

机构：

[1] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] EURATOM, Jozef Stefan Inst, Ljubljana 1000, Slovenia

[3] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[4] As EURATOM CIEMAT, Madrid 28040, Spain

[5] Culham Ctr Fus Energy, Abingdon OX14 3DB, Oxon, England

[6] Forschungszentrum Julich, IEF Plasmaphys, EURATOM Assoc, D-52425 Julich, Germany

[7] Assoc EURATOM IST, Inst Plasmas & Fusao Nucl, P-1049001 Lisbon, Portugal

[8] EURATOM, CEA, IRFM, F-13108 St Paul Les Durance, France

来源：

JOURNAL OF NUCLEAR MATERIALS | 2015年 / 463卷

关键词：

Data acquisition - Mass spectrometry - Nitrogen plasma - Methane - Nitrogen - Ammonia;

D O I：

10.1016/j.jnucmat.2014.12.084

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Presented are the results of the first mass spectrometry study of impurities at JET with the ILW. Measurements are performed with the newly-installed RGA system that allows for data acquisition in all stages of machine operation. Impurities are predominantly found in the 16-20 AMU range, populated by water, methane and ammonia, and at 28 AMU (CO and N-2). The main contaminants in non-seeded discharges are deuterated methane and water, and nitrogen, which are present only in low amounts, and are likely produced by plasma-surface interaction. During N-2 seeded discharges, signals increase significantly at 28 AMU, but also in the 16-20 AMU range, indicating conversion of nitrogen to ammonia. In subsequent non-seeded discharges, impurity content is reduced by an order of magnitude, however it exhibits a 5-7 discharge-long legacy. (C) 2015 EURATOM. Published by Elsevier B.V. All rights reserved.

引用

页码：684 / 687

页数：4

共 11 条

[11] Overview of the JET results with the ITER-like wall [J].

Romanelli, F. ;

Abel, I. ;

Afanesyev, V. ;

Aftanas, M. ;

Agarici, G. ;

Aggarwal, K. M. ;

Aho-Mantila, L. ;

Ahonen, E. ;

Aints, M. ;

Airila, M. ;

Akers, R. ;

Alarcon, Th. ;

Albanese, R. ;

Alexeev, A. ;

Alfier, A. ;

Allan, P. ;

Almaviva, S. ;

Alonso, A. ;

Alper, B. ;

Altmann, H. ;

Alves, D. ;

Ambrosino, G. ;

Amosov, V. ;

Andersson, F. ;

Sunden, E. Andersson ;

Andreev, V. ;

Andrew, Y. ;

Angelone, M. ;

Anghel, M. ;

Anghel, A. ;

Angioni, C. ;

Apruzzese, G. ;

Arcis, N. ;

Arena, P. ;

Argouarch, A. ;

Ariola, M. ;

Armitano, A. ;

Arnoux, G. ;

Arshad, S. ;

Artaserse, G. ;

Artaud, J. F. ;

Ash, A. ;

Asp, E. ;

Asunta, O. ;

Atanasiu, C. V. ;

Atkins, G. ;

Avotina, L. ;

Axton, M. D. ;

Ayres, C. ;

Baciero, A. .

NUCLEAR FUSION, 2013, 53 (10)

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