TY - CONF

T1 - Influence of the Electrode Surface Shape on Plasma and Light Emission Properties of High Pressure Short-Arc Xenon Discharge Lamps

AU - Тимофеев, Николай Александрович

AU - Сухомлинов, Владимир Сергеевич

AU - Zissis, George

AU - Мухараева, Инджира Юрьевна

AU - Бородина, Валерия Сергеевна

AU - Badr, Abdul Hady

PY - 2023/6/8

Y1 - 2023/6/8

N2 - The investigation of a short-arc xenon discharge at high pressure with essential evaporation of cathode material, thorium, into the discharge gap is carried out. The base of the study is the model developed previously. The data obtained show that thorium atoms strongly alter plasma characteristics, reducing the plasma temperature and changing the ionic composition near the cathode. In this work we consider a xenon discharge when discharge electrodes have a different shape of the working surface: the anode has a convex or concave shape; the cathode has a different cone angle. The calculations show that the shape of electrodes is indeed an unexpectedly strong factor of affecting plasma electrokinetic (electric field strength, temperature, composition of plasma particles) and optical (intensity and spectra) characteristics. The results obtained may be valuable for the development of new arc discharge light sources (xenon lamps).

AB - The investigation of a short-arc xenon discharge at high pressure with essential evaporation of cathode material, thorium, into the discharge gap is carried out. The base of the study is the model developed previously. The data obtained show that thorium atoms strongly alter plasma characteristics, reducing the plasma temperature and changing the ionic composition near the cathode. In this work we consider a xenon discharge when discharge electrodes have a different shape of the working surface: the anode has a convex or concave shape; the cathode has a different cone angle. The calculations show that the shape of electrodes is indeed an unexpectedly strong factor of affecting plasma electrokinetic (electric field strength, temperature, composition of plasma particles) and optical (intensity and spectra) characteristics. The results obtained may be valuable for the development of new arc discharge light sources (xenon lamps).

KW - arc xenon discharge

KW - light sources

KW - shape of electrode working surface

KW - thorium atoms evaporation

UR - https://www.mendeley.com/catalogue/0ef5a68f-2d50-3195-99f9-bc7d18e55c7a/

U2 - 10.1109/ls1858153.2023.10170552

DO - 10.1109/ls1858153.2023.10170552

M3 - Paper

T2 - 2023 IEEE Sustainable Smart Lighting World Conference & Expo (LS18)

Y2 - 8 June 2023 through 10 June 2023

ER -