Abstract

A wall-stabilized high-current (100 A) arc was operated in argon at a pressure of 1 atm. Different gases (CO2, O2) could be added to the plasma. Temperature, electron, ion, and atom densities have been determined by spectroscopic observations in the visible and in the vacuum-ultraviolet (vuv) regions of the spectrum, assuming local thermal equilibrium. These values, together with the absolute emission intensities in the vuv region between 980 and 1250 Å, allowed the calculation of the photoionization cross section of carbon. This experimental value compared well with previously published theoretical calculations: it was 19×10−18 cm2 at threshold.

© 1971 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Photoionization Cross Sections of Neon from Threshold to 200 Å

James A. R. Samson
J. Opt. Soc. Am. 55(8) 935-937 (1965)

Photoionization Cross Sections of Helium

James A. R. Samson
J. Opt. Soc. Am. 54(7) 876-878 (1964)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (26)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription