Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Physical Basis of Line Enhancement in Argon and Krypton

Not Accessible

Your library or personal account may give you access

Abstract

The enhancement of certain metallic ion lines, obtained from the dc arc in atmospheres of argon, krypton, and helium has been examined. The ratios of the intensities of these lines in argon to their intensities in helium and krypton are maximal for those whose excitation potentials (E.P.) lie in the vicinity of the E.P. of the lower excited energy levels of argon. This observation is accounted for by the following mechanism: The noble gas is energized to its lowest excited levels by the arc discharge through collisions of the second kind. This energy is transferred to neutral metal atoms volatilized in the arc. The metal atoms are thus ionized and excited; they then fall to the ground state emitting their characteristic radiation. The maximum energy is transferred from argon to metal atoms when the energy of the excited noble gas atom equals the E.P. of the metal ion line, resulting in the selective enhancement observed.

© 1956 Optical Society of America

Full Article  |  PDF Article
More Like This
The Effects of Argon and Argon-Helium Mixtures on the Direct Current Arc*†

Bert L. Vallee and S. James Adelstein
J. Opt. Soc. Am. 42(5) 295-299 (1952)

Effect of Alkali and Alkaline Earth Chlorides on the Anode Temperature of the dc Arc*

Bert L. Vallee and Ralph E. Thiers
J. Opt. Soc. Am. 46(2) 83-86 (1956)

Anode Temperatures and Characteristics of the dc Arc in Noble Gases*†

Bert L. Vallee and Milton R. Baker
J. Opt. Soc. Am. 46(2) 77-82 (1956)

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 Optica member, or as an authorized user of your institution.

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

Figures (3)

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

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

Tables (2)

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

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved