Title

Investigation of Stark Broadening in LIBS of Hydrogen Balmer emission lines n = 3 to 15

Publication Date

April 2009

Advisor(s)

Huwel, Lutz

Department

PHYS

Language

English (United States)

Abstract

This thesis investigates Stark broadening hydrogen Balmer emission lines n = 4 to 15 subsequent to nanosecond laser induced optical breakdown of hydrogen gas from Nd:YAG Q-switched laser operated at 1064 nm. Data for 1, 2 and 4 µs delay times after the plasma initiation was Abel inverted for Balmer emission lines from n = 3 to 10. Trends in Area and FWHM under the fitted Lorentzian to these curves were plotted as a function of radius and for three separate delays. Temperature of 5000 to 10000 K was calculated. Electron number of density of 5×〖10〗^16 to 1×〖10〗^15/〖cm〗^(-3)was referred from the theory. This work was able to observe distinguishable hydrogen Balmer emission lines from plasma for n = 3 to 15.

 

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