Journal
JOURNAL OF APPLIED SPECTROSCOPY
Volume 88, Issue 5, Pages 1061-1066Publisher
SPRINGER
DOI: 10.1007/s10812-021-01280-7
Keywords
laser-induced breakdown spectroscopy; Nd; YAG laser; spectrum
Categories
Funding
- U.S. Office of Naval Research (ONR) through the Multidisciplinary University Research Initiative (MURI) program
Ask authors/readers for more resources
The study found that with the increase of pulse energy, the degree of self-reversal of sodium D lines in soil samples first increases then rapidly decreases, indicating the possibility of avoiding this phenomenon actively.
Self-reversed sodium D lines in laser-induced plasmas generated from soil samples with a sodium trace concentration of 42.3 ppm was examined using laser-induced breakdown spectroscopy (LIBS). The inverse pulse-energy dependence as well as spatially resolved behaviors of self-reversal were investigated using a pulsed Nd:YAG laser (532 nm, 7 ns) and a spectrograph with an ICCD camera. As pulse energy increases, the degree of self-reversal first augments then rapidly diminishes. The mechanism behind this lies in the separation of emission and absorption centers in wavelength, coupled with the fact that the central and outer layers of the plasmas were heated up equally with higher pulse energies. This indicates the possibility of avoiding self-reversal in an active manner.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available