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Diagnostics tools and methods for negative ion source plasmas, a review

التفاصيل البيبلوغرافية
العنوان: Diagnostics tools and methods for negative ion source plasmas, a review
المؤلفون: Katsuyoshi Tsumori, Motoi Wada
المصدر: New Journal of Physics, Vol 19, Iss 4, p 045002 (2017)
بيانات النشر: IOP Publishing, 2017.
سنة النشر: 2017
المجموعة: LCC:Science
LCC:Physics
مصطلحات موضوعية: negative ions, diagnostics, ion flow, ion source, NBI, negative ion plasma, Science, Physics, QC1-999
الوصف: Plasma parameter measurements for negative hydrogen (H ^− ) ion sources have been playing an important role in clarifying fundamental physics related to negative ion production and destruction processes. Measured data of beam properties, such as H ^− ion current density with the co-extracted electron current and the emittance, were correlated to local concentration of charged particles and temperature often characterized by Langmuir probes and optical emission spectrometry. Langmuir probes coupled to pulse lasers quantified local H ^− ion densities from early days of H ^− ion source development, while the cavity ring down photodetachment method removed Langmuir probes from contemporary large-size high power density ion sources. Technological progress has made source plasma diagnostics possible during beam extraction, which has thrown light on the transport of H ^− ions during the application of the extraction electric field. The advancement of plasma diagnostics for high intensity H ^− ion sources are summarized in this report together with recent results from the research and development negative ion source being operated for collaborative research programs at National Institute for Fusion Science.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1367-2630
Relation: https://doaj.org/toc/1367-2630
DOI: 10.1088/1367-2630/aa6927
URL الوصول: https://doaj.org/article/0d8b301a535746628265100d995a0de1
رقم الأكسشن: edsdoj.0d8b301a535746628265100d995a0de1
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:13672630
DOI:10.1088/1367-2630/aa6927