SPECTROSCOPIC STUDIES OF A LASER-PRODUCED PLASMA IN HELIUM,

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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

Author(s):
Braerman, W. F. ; Stumpfel, C. R. ; Kunze, H. J.
Author Organization(s):
BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD
Pagination:
0037

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
BRL-1434
Project Number(s):
RDT/E-1-T-061102-A-31-C
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*LASERS, *PLASMA GENERATORS, *PLASMAS(PHYSICS), SPECTROSCOPY, HELIUM, IONIZATION, STARK EFFECT, LINE SPECTRA, CONTINUOUS SPECTRA, COHERENT RADIATION, ELECTRON DENSITY
Field(s)/Group(s):
Plasma Physics and Magnetohydrodynamics
Keyword(s):
LASER PRODUCED PLASMAS, DIAGNOSIS(GENERAL), PLASMAS(PHYSICS), Q SWITCHED LASERS
Report Date:
1969 May 01