TY - JOUR
T1 - Characteristics of macroparticle emission from a high-current-density multi-cathode spot vacuum arc
AU - Disatnik, Gilad
AU - Boxman, R. L.
AU - Goldsmith, S.
PY - 1987/10
Y1 - 1987/10
N2 - Macroparticle mass transport, size distribution, and spatial distribution were studied in a 6.5-MA/m2 25-ms Cu multi-cathode spot (MCS) vacuum arc. The macroparticle erosion rate was determined to be 105 μg/C, and together with ionic emission, accounted for most of the cathodic erosion. The number of macroparticles emitted decreased exponentially with macroparticle diameter, with 20-80-μm macroparticles carrying the bulk of the mass transport. Macroparticles are emitted preferentially at an angle of 20° with respect to the cathode surface. In comparison to previous investigations, higher macroparticle erosion rates, a larger proportion of large macroparticles, and a higher emission angle are observed, and the differences are attributed to the large current density used in the present experiment.
AB - Macroparticle mass transport, size distribution, and spatial distribution were studied in a 6.5-MA/m2 25-ms Cu multi-cathode spot (MCS) vacuum arc. The macroparticle erosion rate was determined to be 105 μg/C, and together with ionic emission, accounted for most of the cathodic erosion. The number of macroparticles emitted decreased exponentially with macroparticle diameter, with 20-80-μm macroparticles carrying the bulk of the mass transport. Macroparticles are emitted preferentially at an angle of 20° with respect to the cathode surface. In comparison to previous investigations, higher macroparticle erosion rates, a larger proportion of large macroparticles, and a higher emission angle are observed, and the differences are attributed to the large current density used in the present experiment.
UR - http://www.scopus.com/inward/record.url?scp=0022797477&partnerID=8YFLogxK
U2 - 10.1109/TPS.1987.4316747
DO - 10.1109/TPS.1987.4316747
M3 - מאמר
AN - SCOPUS:0022797477
VL - 15
SP - 520
EP - 523
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
SN - 0093-3813
IS - 5
ER -