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Quantifying fusion born ion populations in magnetically confined plasmas using ion cyclotron emission
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Carbajal, L., Dendy, R. O., Chapman, Sandra C. and Cook, James William S. (2017) Quantifying fusion born ion populations in magnetically confined plasmas using ion cyclotron emission. Physical Review Letters, 118 (10). 105001. doi:10.1103/PhysRevLett.118.105001 ISSN 0031-9007.
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Official URL: https://doi.org/10.1103/PhysRevLett.118.105001
Abstract
Ion cyclotron emission (ICE) offers unique promise as a diagnostic of the fusion born alpha-particle population in magnetically confined plasmas. Pioneering observations from JET and TFTR found that ICE intensity PICE scales approximately linearly with the measured neutron flux from fusion reactions, and with the inferred concentration, n_\alpha/n_i, of fusion-born alpha-particles confined within the plasma. We present fully nonlinear self-consistent kinetic simulations that reproduce this scaling for the first time. This resolves a longstanding question in the physics of fusion alpha particle confinement and stability in MCF plasmas. It confirms the magnetoacoustic cyclotron instability (MCI) as the likely emission mechanism and greatly strengthens the basis for diagnostic exploitation of ICE in future burning plasmas.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
| Library of Congress Subject Headings (LCSH): | Plasma (Ionized gases), Plasma heating, Controlled fusion, Cyclotrons | ||||||||
| Journal or Publication Title: | Physical Review Letters | ||||||||
| Publisher: | American Physical Society | ||||||||
| ISSN: | 0031-9007 | ||||||||
| Official Date: | 10 March 2017 | ||||||||
| Dates: |
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| Volume: | 118 | ||||||||
| Number: | 10 | ||||||||
| Article Number: | 105001 | ||||||||
| DOI: | 10.1103/PhysRevLett.118.105001 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 15 February 2017 | ||||||||
| Date of first compliant Open Access: | 31 July 2017 | ||||||||
| Funder: | Consejo Nacional de Ciencia y TecnologÃa (Mexico) [Mexican Council for Science and Technology] (CONACYT), Research Councils UK (RCUK), Commission of the European Communities, Engineering and Physical Sciences Research Council (EPSRC), Euratom | ||||||||
| Grant number: | EP/I50104 (RCUK), 633053 (Euratom) | ||||||||
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