Research output: Contribution to journal › Article › peer-review
Modeling of High Pressure Short-Arc Xenon Discharge with a Thoriated Cathode. / Timofeev, Nikolai A.; Sukhomlinov, Vladimir S.; Zissis, Georges; Mukharaeva, Indzhira Yu; Mikhaylov, Dmitrii V.; Mustafaev, Alexander S.; Dupuis, Pascal; Solikhov, Davlat Quvatovich; Borodina, Valeria S.
In: IEEE Transactions on Plasma Science, Vol. 49, No. 8, 9487019, 01.08.2021, p. 2387-2396.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Modeling of High Pressure Short-Arc Xenon Discharge with a Thoriated Cathode
AU - Timofeev, Nikolai A.
AU - Sukhomlinov, Vladimir S.
AU - Zissis, Georges
AU - Mukharaeva, Indzhira Yu
AU - Mikhaylov, Dmitrii V.
AU - Mustafaev, Alexander S.
AU - Dupuis, Pascal
AU - Solikhov, Davlat Quvatovich
AU - Borodina, Valeria S.
N1 - Publisher Copyright: © 1973-2012 IEEE.
PY - 2021/8/1
Y1 - 2021/8/1
N2 - A short-arc xenon discharge of high (super-high) pressure, which is widely used as a light source, has been studied taking into account the evaporation of cathode material (thorium) into the discharge volume. The article is a continuation of the experimental study, results of which were published earlier (IEEE Transactions on Plasma Science, July 2019, Vol. 47, Issue 7, pp. 3266-3270). A model of the discharge of real geometry is developed, the ellipsoidal coordinates as the most appropriate being used. The strong influence of thorium on the plasma characteristics is obtained. The most noticeable effect is got for the plasma temperature, which is sufficiently lower near the cathode than in a pure xenon discharge, the electric field strength having higher values and penetrating deeper into the discharge volume, and the density of xenon ions, which is close to zero near the cathode that is completely inexplicable without thorium evaporation into the discharge. The results and the approach can be applied to describe other arc discharge plasmas with electrodes doped with some weakly ionized additives.
AB - A short-arc xenon discharge of high (super-high) pressure, which is widely used as a light source, has been studied taking into account the evaporation of cathode material (thorium) into the discharge volume. The article is a continuation of the experimental study, results of which were published earlier (IEEE Transactions on Plasma Science, July 2019, Vol. 47, Issue 7, pp. 3266-3270). A model of the discharge of real geometry is developed, the ellipsoidal coordinates as the most appropriate being used. The strong influence of thorium on the plasma characteristics is obtained. The most noticeable effect is got for the plasma temperature, which is sufficiently lower near the cathode than in a pure xenon discharge, the electric field strength having higher values and penetrating deeper into the discharge volume, and the density of xenon ions, which is close to zero near the cathode that is completely inexplicable without thorium evaporation into the discharge. The results and the approach can be applied to describe other arc discharge plasmas with electrodes doped with some weakly ionized additives.
KW - Arc discharges
KW - high xenon pressure
KW - light sources
KW - modeling
KW - plasma applications
KW - thorium evaporation
KW - tungsten-thorium cathode
UR - http://www.scopus.com/inward/record.url?scp=85110830371&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/d2caed40-1f4d-3234-94d5-f1b2cca9efae/
U2 - 10.1109/tps.2021.3093816
DO - 10.1109/tps.2021.3093816
M3 - Article
AN - SCOPUS:85110830371
VL - 49
SP - 2387
EP - 2396
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
SN - 0093-3813
IS - 8
M1 - 9487019
ER -
ID: 84986628