DSpace logo

Please use this identifier to cite or link to this item: http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17203
Title: Kinetics of Thermal Ionization of Alkali Metals in Flames
Authors: Hayhurst, A N
Telford, N R
Keywords: Chemistry
Kinetics
Thermal Ionization
Alkali Metals
Journal of the Chemical Society : Faraday Transaction - I
Issue Date: 1972
Publisher: Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (2)
Abstract: The rate of ionization of alkali metal atoms M in flames of H2+ O2+ N2 has been measured using a quadrupole mass spectrometer to determine concentrations of each ion in a flame. The results confirm that the atoms ionize by collisions with flame gas molecules X in M + X → M++ e–+ X. The measured activation energy is, within experimental error, the ionization potential of the alkali metal and the associated cross-sections πσ2 are anomalously large, being similar for each metal and in the range 2.5 ± 1.1 × 10–16 m2. These cross-sections are in excellent agreement with Kelly and Padley's values and are discussed in terms of both a “ladder-climbing” excitation mechanism and a process with an ionic complex as intermediate.
URI: http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17203
Appears in Collections:Journal Articles (before-1995)

Files in This Item:
File Description SizeFormat 
237-248.pdf
  Restricted Access
1.02 MBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.