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Some Observations on the Ionization Mechanism for Strontium in the Air-Acetylene Flame Under Resonant Laser Excitation

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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.

Keywords: Ionization mechanisms; Laser-enhanced ionization; Strontium ionization in flames

Document Type: Short Communication


Affiliations: 1: Joint Research Center, Chemistry Division, 21020 Ispra (Varese), Italy; on leave from: Center for Analytical Chemistry, National Bureau of Standards, Gaithersburg, MD 2: Joint Research Center, Chemistry Division, 21020 Ispra (Varese), Italy

Publication date: May 1, 1987

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