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STARK BROADENING OF THE SPECTRUM LINE 4603 A. OF LITHIUM

Journal Article · · Nature
DOI:https://doi.org/10.1038/192252b0· OSTI ID:4833677
The lithium line at 4603 A arises from a 2p-4d transition. Under the action of a uniform electric field this line is displaced to longer wave-lengths and two other lines appear, one due to a 2p-4p transition and the other to a 2p- 4f transition. The 2p-4p transition gives a weak line at 4636 A for vanishingly weak electric fields, shifting to longer wave-lengths at increasing field strengths. The 2p-4f transition gives a line at 4602 A for vanishingly weak fields, shifting to shorter wave-lengths at increasing field strengths. In the actual experiment the shock wave Mach number was 9.2, and the initial pressure of the argon 5 mm mercury. This gives a temperature of 11500 deg k and ion density of 1.6 x 10/sup 17/ per cc behind the shock wave reflected from the end of the tube. (P.C.H.)
Research Organization:
National Physical Lab., Teddington, Middx., Eng.
Sponsoring Organization:
USDOE
NSA Number:
NSA-16-002342
OSTI ID:
4833677
Journal Information:
Nature, Journal Name: Nature Vol. Vol: 192
Country of Publication:
Country unknown/Code not available
Language:
English