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Applied Optics

Applied Optics


  • Vol. 42, Iss. 30 — Oct. 20, 2003
  • pp: 5992–6000

Balmer series Hβ measurements in a laser-induced hydrogen plasma

Christian G. Parigger, David H. Plemmons, and Eugene Oks  »View Author Affiliations

Applied Optics, Vol. 42, Issue 30, pp. 5992-6000 (2003)

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Stark-broadened emission profiles of the Balmer series Hβ lines are measured subsequent to nanosecond laser-induced optical breakdown in gaseous hydrogen. Electron number densities are found from time-resolved spectra from Hβ emissions to be in the range 1015–1018 cm-3. These results are compared with Hα measurements for which number densities as high as 1019 cm-3 are determined from Stark widths and Stark shifts. Good agreement is reported for number densities inferred from Hα and Hβ emissions, down to an electron number density 3 × 1016 cm-3, by accurate treatment of ion dynamics in the theory.

© 2003 Optical Society of America

OCIS Codes
(020.3690) Atomic and molecular physics : Line shapes and shifts
(140.3440) Lasers and laser optics : Laser-induced breakdown
(300.6210) Spectroscopy : Spectroscopy, atomic
(350.5400) Other areas of optics : Plasmas

Original Manuscript: January 18, 2003
Revised Manuscript: May 13, 2003
Published: October 20, 2003

Christian G. Parigger, David H. Plemmons, and Eugene Oks, "Balmer series Hβ measurements in a laser-induced hydrogen plasma," Appl. Opt. 42, 5992-6000 (2003)

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