ANALYTICAL TIME-RESOLVED LASER-ENHANCED IONIZATION SPECTROSCOPY .1. COLLISIONAL IONIZATION AND PHOTOIONIZATION OF THE HG RYDBERG STATES IN A LOW-PRESSURE GAS
Wl. Clevenger et al., ANALYTICAL TIME-RESOLVED LASER-ENHANCED IONIZATION SPECTROSCOPY .1. COLLISIONAL IONIZATION AND PHOTOIONIZATION OF THE HG RYDBERG STATES IN A LOW-PRESSURE GAS, Spectrochimica acta, Part B: Atomic spectroscopy, 52(3), 1997, pp. 295-304
The temporal behavior of the laser enhanced ionization signal of mercu
ry was studied in a quartz cell under low buffer gas pressure. Using f
ast electronics and a short (34 ns) laser pulse, it was possible to di
stinguish, in one single time-resolved ionization waveform, the non-se
lective photoionization component of the signal from that which was du
e to collisional ionization from selected levels. Experimental results
were shown to agree with those obtained by computer simulation, and o
ptimal conditions for deconvolution of the two components were studied
. (C) 1997 Elsevier Science B.V.