Resonant optical absorption spectroscopy of Ce

Resonant optical absorption of ground state Ce atoms is demonstrated. Ce I resonant emission line at 461.05 nm (Aij = 28 × 108 s−1) corresponding to the transition 4f5d6s2-4f2(1G)5d (2I)6s is utilized. In a magnetron sputtering discharge used as an atomic source, the absolute densities of atomic gro...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2013-05, Vol.46 (17), p.175202-1-7
Main Authors: Britun, Nikolay, Ershov, Sergey, Mel, Abdel-Aziz El, Konstantinidis, Stephanos, Ricard, André, Snyders, Rony
Format: Article
Language:English
Subjects:
absolute density
Absorption spectroscopy
Cathode sputtering
Cerium
Density
Discharge
Ground state
Hysteresis
Physics
resonant absorption
ROAS
sputtering
Titanium
Transition points
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Summary:Resonant optical absorption of ground state Ce atoms is demonstrated. Ce I resonant emission line at 461.05 nm (Aij = 28 × 108 s−1) corresponding to the transition 4f5d6s2-4f2(1G)5d (2I)6s is utilized. In a magnetron sputtering discharge used as an atomic source, the absolute densities of atomic ground state Ce sputtered in pure Ar and in Ar-O2 (oxidized magnetron cathode) gas mixtures are found to be nearly 2 × 108 cm−3 (pure Ar) and 1 × 107 cm−3 (Ar + O2). The phenomena inherent in reactive sputtering, such as the non-oxidized-oxidized regime transition and the hysteresis of the transition point, are detected. The obtained data are compared with the existing results of a similar absorption analysis performed in the Ti dc magnetron discharges. The discrepancies in the obtained Ce and Ti absolute ground state densities are analysed.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/46/17/175202