Abstract
THE combination of flash photolysis with absorption spectroscopy has produced a powerful method of investigating transient chemical species and energy-transfer phenomena1,2. In practice, application has generally been limited to substances which absorb at wave-lengths longer than 1900 Å, because of the suitability of quartz in the construction of the apparatus. Thus it has frequently been necessary to sensitize reactions by inclusion of substances which are opaque in the ultra-violet above 1900 Å, with consequent complications on the mechanism. In order to produce a high concentration of transient chemical species in any gas, we have recently constructed an apparatus which produces a short duration electric discharge by means of a single microwave-pulse, with a peak power of 8 × 104 W. It has been readily demonstrated that the absorption spectra of metastable atoms and free radicals present in the gas discharges can be photographed by absorption spectroscopy.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Norrish, R. G. W., and Porter, G., Nature, 164, 658 (1949).
Herzberg, G., and Ramsay, D. A., Disc. Farad. Soc., 9, 80 (1950).
Matheson, M. A., and Dorfman, L. M., J. Chem. Phys., 32, 1870 (1960).
Callear, A. B., and Norrish, R. G. W., Proc. Roy. Soc., A, 266, 299 (1962).
Phelps, A. V., and Brown, S. C., Phys. Rev., 86, 102 (1952). Phelps, A. V., ibid., 99, 1357 (1955).
Myers, H., Phys. Rev., 130, 1639 (1963).
Basco, N., Nicholas, J. E., Norrish, R. G. W., and Vickers, W. H. J., Proc. Roy. Soc., A, 272, 147 (1963).
Dixon, R. N., Canad. J. Phys., 38, 10 (1960).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
CALLEAR, A., GREEN, J. & WILLIAMS, G. Absorption Spectra of Transient Chemical Species produced in Gases by a Single-pulse Microwave-discharge. Nature 201, 70–72 (1964). https://doi.org/10.1038/201070b0
Issue Date:
DOI: https://doi.org/10.1038/201070b0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
