SPECTROSCOPIC STUDIES OF A LASER-PRODUCED PLASMA IN HELIUM,
Abstract
A highly ionized plasma was produced by laser induced breakdown in helium at a pressure of 360 Torr. Line and continuum emission from the plasma were studied as a function of time and of position along the axis of the laser beam. Plasma parameters were then deduced from Stark widths, line-to-continuum and line-to-line intensity ratios. The applicability of the various methods to the case of a rapidly decaying laser-produced plasma is discussed. The decay of the plasma is analyzed and the observed decay coefficients are compared with theoretical calculations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1969
- Accession Number
- AD0690193
Entities
People
- C. R. Stumpfel
- H. J. Kunze
- W. F. Braerman
Organizations
- Ballistic Research Laboratory