Soft X-ray bands of highly ionized tungsten,gold and lead emitted by the TEXT tokamak plasma |
| |
| Institution: | 1. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, PR China;2. i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), 398 Ruoshui Road, Suzhou 215123, PR China;1. B2R, Institut Polytechnique LaSalle Beauvais, Geosciences Department, 19 Rue Pierre Waguet, F-60026 Beauvais, France;2. Geoscience Australia, Resources Division, Cnr Jerrabomberra Avenue and Hindmarsh Drive, Symonston 2609, ACT, Australia;3. Centre for Exploration Targeting, School of Earth and Environment, University of Western Australia, 35 Stirling Highway, Crawley 6009, WA, Australia;4. Technische Universität Darmstadt, Institut für Angewandte Geowissenschaften, Schnittspahnstraße 9, D-64287 Darmstadt, Germany;1. CSIRO Mineral Resources, Australian Resources Research Centre, 26 Dick Perry Avenue, Kensington, WA 6151, Australia;2. Department of Applied Geology, Curtin University, Building 312, Kent Street, WA 6102, Australia;1. The Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, People’s Republic of China;2. Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People’s Republic of China;3. Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA;4. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, People’s Republic of China;5. Xi’an Institute of Geology and Mineral Resource, Xi’an 710054, People’s Republic of China |
| |
| Abstract: | Spectra of highly ionized tungsten, gold and lead emitted from the TEXT tokamak have been recorded in the 20–70 Å range by means of a grazing incidence, time-resolving spectrograph. The narrow and bright emission bands centered around 40, 45 and 50 Å in Pb, Au and W respectively, and bands of lesser intensities at lower wavelenghts, are emitted by a very large number of superimposed lines originating from transitions of the type 4d104fn−4d94fn+1, 4d104fn−4d94fn5p and 4fn−4fn−15l (l=d, g). The isoelectronic analysis shows that at the electron temperatures prevailing in the present experiment, Te≈800 eV, there are no contributions to the bands from ions having a 4p64dn ground state. This, together with the experimental measurement of the electron temperature profile, indicates that the heavy ion impurity distribution in the tokamak plasma is very close to ionization equilibrium. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
