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Comment on a Paper by W. E. Bowls, "Second Townsend Coefficient"

Comment on a Paper by W. E. Bowls, "Second Townsend Coefficient" Comment on a Paper by W. E. Bowls, "Second Townsend Coefficient" The discussion of the possible ionization of mercury by metastable nitrogen molecules calls for some comment even at this late date. Unfortunately, my attention was attracted to this paper1 only recently, and yet I feel that these remarks may help others in future considerations involving metastable nitrogen molecules. The energy of the metastable A3l level of nitrogen has now been definitely established at 6.14 volts, and the com- monly quoted 8.2-volt value should not be used. The value of 9.77 volts, as given by Saha and Mathur, is undoubtedly their value for the energy that can be transferred by active nitrogen. Now the fact that the energy of the metastable state is less than the 10.39 volts required for the ionization of mercury should not deter anyone from supposing that active nitrogen can ionize mercury vapor. The 10.4- and the 9.77-volt values for the energy that can be transferred in active nitrogen are obtained from experiments on the Lewis-Rayleigh afterglow, and it is now well established that strong afterglows possessing auroral and night-sky spectra can be produced. At the present time the writer is observing a high http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review American Physical Society (APS)

Comment on a Paper by W. E. Bowls, "Second Townsend Coefficient"

Kaplan, Joseph
Physical Review , Volume 55 (1) – Jan 1, 1939
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Publisher
American Physical Society (APS)
Copyright
Copyright © 1939 The American Physical Society
ISSN
1536-6065
DOI
10.1103/PhysRev.55.111
Publisher site
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Abstract

Comment on a Paper by W. E. Bowls, "Second Townsend Coefficient" The discussion of the possible ionization of mercury by metastable nitrogen molecules calls for some comment even at this late date. Unfortunately, my attention was attracted to this paper1 only recently, and yet I feel that these remarks may help others in future considerations involving metastable nitrogen molecules. The energy of the metastable A3l level of nitrogen has now been definitely established at 6.14 volts, and the com- monly quoted 8.2-volt value should not be used. The value of 9.77 volts, as given by Saha and Mathur, is undoubtedly their value for the energy that can be transferred by active nitrogen. Now the fact that the energy of the metastable state is less than the 10.39 volts required for the ionization of mercury should not deter anyone from supposing that active nitrogen can ionize mercury vapor. The 10.4- and the 9.77-volt values for the energy that can be transferred in active nitrogen are obtained from experiments on the Lewis-Rayleigh afterglow, and it is now well established that strong afterglows possessing auroral and night-sky spectra can be produced. At the present time the writer is observing a high

Journal

Physical Review – American Physical Society (APS)

Published: Jan 1, 1939

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