ESTIMATION OF Z(EFF) IN NOVILLO TOKAMAK

Authors
VALENCIA R OLAYO G CRUZ G LOPEZ R CHAVEZ E MELENDEZ L FLORES A GAYTAN E
Citation
R. Valencia et al., ESTIMATION OF Z(EFF) IN NOVILLO TOKAMAK, Journal of nuclear materials, 228(2), 1996, pp. 254-256
Citations number
18
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
228
Issue
2
Year of publication
1996
Pages
254 - 256
Database
ISI
SICI code
0022-3115(1996)228:2<254:EOZINT>2.0.ZU;2-1
Abstract
We estimated the Z(eff) in the Novillo Tokamak after having applied a HeGDC process through two different methods: anomaly factor and mass s pectrometry. The first one gave a Z(eff) value of 2.07 for a tokamak d ischarge of 4350 A plasma current and 3 V of loop voltage. By mass spe ctrometry 30 s after the discharge had finished a Z(eff) of 4.19 was o btained for the same discharge. By mass spectrometry we observed that the Z(eff) value is a time function. Furthermore this method is helpfu l for evaluating the level of impurities after many discharges in Novi llo Tokamak.