TY - JOUR
T1 - Comparison of hollow cathode and penning discharges for metastable He production
AU - Andruczyk, D.
AU - Feng, P. X.
AU - James, B. W.
AU - Howard, J.
PY - 2002/11
Y1 - 2002/11
N2 - The production of helium 21S singlet metastable atoms has been investigated using a hollow cathode discharge and a Penning discharge, under dc discharge conditions. The density of metastable atoms was measured by atomic absorption using the 21S-31P transition (501.57 nm). A range of plasma currents, varying from 16 to 180 mA, and a range of pressures, from 100 mTorr to 5 Torr, were investigated. This work is directed ultimately to the production of a supersonic metastable helium beam for plasma diagnostics, in particular the measurement of electric fields using laser induced fluorescence.
AB - The production of helium 21S singlet metastable atoms has been investigated using a hollow cathode discharge and a Penning discharge, under dc discharge conditions. The density of metastable atoms was measured by atomic absorption using the 21S-31P transition (501.57 nm). A range of plasma currents, varying from 16 to 180 mA, and a range of pressures, from 100 mTorr to 5 Torr, were investigated. This work is directed ultimately to the production of a supersonic metastable helium beam for plasma diagnostics, in particular the measurement of electric fields using laser induced fluorescence.
UR - http://www.scopus.com/inward/record.url?scp=0036859995&partnerID=8YFLogxK
U2 - 10.1088/0963-0252/11/4/309
DO - 10.1088/0963-0252/11/4/309
M3 - Article
SN - 0963-0252
VL - 11
SP - 426
EP - 430
JO - Plasma Sources Science and Technology
JF - Plasma Sources Science and Technology
IS - 4
ER -