In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 28, No. 8R ( 1989-08-01), p. 1486-
Abstract:
In order to evaluate the electron temperature and the effective charge number ( Z eff ) of the ultralong discharge by a lower hybrid current drive in the TRIAM-1M tokamak, the soft X-ray energy spectrum is measured by the pulse height analysis system. The accuracy of the electron temperatures determined by the soft X-ray spectrum measurements is confirmed by comparing with the temperature obtained by the Thomson scattering system for OH plasmas. We obtained a bulk electron temperature of about 1.5 keV and a Z eff value of about 2 during the long-term discharge. It was found that the impurities observed in the spectrum were K α -lines of Fe, Cr and Ni originating from the stainless-steel limiter and they did not increase during the long-term discharge. Thus we obtained clean plasmas with relatively high temperature by a lower hybrid current drive.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.28.1486
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1989
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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