Comparative study of femtosecond and nanosecond laser-induced breakdown spectroscopy of depleted uranium

Journal Article · Thu Jan 20 00:00:00 EST 2011 · Applied Optics

DOI:https://doi.org/10.1364/AO.50.000313· OSTI ID:22036569

Emmert, Luke A; Chinni, Rosemarie C; Cremers, David A; Jones, C Randy; Rudolph, Wolfgang

We present spectra of depleted uranium metal from laser plasmas generated by nanosecond Nd:YAG (1064 nm) and femtosecond Ti:sapphire (800 nm) laser pulses. The latter pulses produce short-lived and relatively cool plasmas in comparison to the longer pulses, and the spectra of neutral uranium atoms appear immediately after excitation. Evidence for nonequilibrium excitation with femtosecond pulses is found in the dependence of spectral line intensities on the pulse chirp.

• OSTI ID: 22036569
• Journal Information: Applied Optics, Vol. 50, Issue 3; Other Information: (c) 2011 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM COMPOUNDS
ATOMS
BREAKDOWN
COMPARATIVE EVALUATIONS
DEPLETED URANIUM
EXCITATION
GARNETS
LASER RADIATION
NEODYMIUM LASERS
PLASMA
PULSES
SAPPHIRE
SPECTRA
SPECTROSCOPY
YTTRIUM COMPOUNDS