Abstract

The ionization spectrum of strontium atoms in an air/acetylene flame under pulsed laser excitation has been recently reported. Single-step as well as two-step excitation was provided by an excimer-pumped dye laser tuned in the blue region of the spectrum. The collisionally assisted ionization in the flame was measured with a water-cooled electrode immersed in the flame and negatively biased (–1300 V), while the charges produced were collected at the burner, converted into a voltage signal, and processed by a boxcar integrator.

Detection of trace amounts of Cr by two laser-based spectroscopic techniques: laser-enhanced ionization in flames and laser-induced fluorescence in graphite furnace

Ove Axner and Halina Rubinsztein-Dunlop
Appl. Opt. 32(6) 867-884 (1993)

Experimental demonstration of a Raman scattering detector based on laser-enhanced ionization

B. W. Smith, P. B. Farnsworth, J. D. Winefordner, and N. Omenetto
Opt. Lett. 15(14) 823-825 (1990)

Ground state saturated population distribution of OH in an acetylene-air flame measured by two optical double resonance pump-probe approaches

Giorgio Zizak, Giuseppe A. Petrucci, Christopher L Stevenson, and James D. Winefordner
Appl. Opt. 30(36) 5270-5275 (1991)

Use of laser-induced ionization to detect soot inception in premixed flames

Samuel L. Manzello, Eui Ju Lee, and George W. Mulholland
Appl. Opt. 44(24) 5105-5111 (2005)

Associative ionization of laser-excited Rydberg states in strontium vapor

E. F. Worden, J. A. Paisner, and J. G. Conway
Opt. Lett. 3(4) 156-158 (1978)