This article is cited in 2 papers

Brief Communications

Determination of the electron density profile of a laser plasma from the Stark broadening of spectral lines in vacuum ultraviolet

E. N. Ragozin


Abstract: Measurements were made of the Stark broadening of the H_α(182.17 Å) and H_β(134.95 Å) lines of the C VI ions at various distances from a target in a plasma formed as a result of focusing of radiation on this target. The target was a planar slab of carbon and the laser radiation was focused into a spot 800 μ in diameter where the average power density was q~8×10¹¹ W/cm². The electron density N_e profile was determined over distances of 0–250 μ from the target. A plasma with a low N_e, gradient could form in a confined space. The refraction of far vacuum ultraviolet radiation was considered allowing only for the electron component of the plasma.

UDC: 621.039.66+621.375.826

PACS: 52.25.Lp, 52.50.Jm, 52.70.Kz

Received: 11.03.1977

 English version: Soviet Journal of Quantum Electronics, 1977, 7:10, 1296–1298