期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 44, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/44/2/025002
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资金
- Grant Agency of the Academy of Sciences of the Czech Republic [IAA400400705, KAN 100500652]
Time-resolved Fourier-transform spectroscopy was applied to the study of the emission spectra of Cu vapours in a vacuum (10(-2) Torr) produced in ablation of a Cu metal target by a high-repetition rate (1.0 kHz) pulsed nanosecond ArF laser (lambda = 193 nm, output energy of 15 mJ). The time-resolved infrared emission spectrum of Cu was recorded in the 1800-3800 cm(-1) spectral region with a resolution of 0.017 cm(-1). The time profiles of the measured lines have maxima at 18-20 mu s after a laser shot and display non-exponential decay with a decay time of 5-15 mu s. This study reports 17 lines (uncertainty 0.0003-0.018 cm(-1)) of Cu I not previously observed. This results in seven newly-found levels and revised energy values for 11 known levels (uncertainty 0.01-0.03 cm(-1)). We also calculate transition probabilities and oscillator strengths for several transitions involving the reported Cu levels.
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