Resonance laser ionization spectroscopy of selenium

Photoionization spectra of Se have been studied by step-wise resonance laser ionization. The Rydberg series 4s24p3(4S)np3P0,1,2 and 4s24p3(4S)np5P1,2,3 were measured via different excitation schemes. Using the Rydberg series 4s24p3(4S)np3P2 with n = 15–49, the ionization potential of Se was determin...

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Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 2021-01, Vol.175 (C), p.106017, Article 106017
Main Authors: Li, Ruohong, Liu, Yuan, Mostamand, Maryam, Lassen, Jens
Format: Article
Language:English
Subjects:
Analytical methods
Autoionizing states
Ionization
Ionization potentials
Lasers
Photochemical reactions
Photoionization
Resonance
Resonance laser ionization spectroscopy
Rydberg series
Selenium
Spectra
Spectroscopy
Spectrum analysis
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Summary:Photoionization spectra of Se have been studied by step-wise resonance laser ionization. The Rydberg series 4s24p3(4S)np3P0,1,2 and 4s24p3(4S)np5P1,2,3 were measured via different excitation schemes. Using the Rydberg series 4s24p3(4S)np3P2 with n = 15–49, the ionization potential of Se was determined with improved precision to 76,658.15(2)stat(4)sys cm−1, which resolved the discrepancy in previous literatures. Autoionizing (AI) spectra between the IP and two neighboring converging limits of the Se ionic states 4s24p3(2D3/2) and 4s24p3(2D5/2) were obtained. In total eight AI Rydberg series have been observed, measured and assigned. [Display omitted] •Stepwise resonance ionization spectroscopy of Se I with Ti:Sapphire lasers.•The ionization potential (IP) of Se is refined to be 76,658.15(2)stat(4)sys cm−1.•New members of odd-parity autoionizing series 4s24p3(2D3/2)nd3Do, ns3Do.•New members of odd-parity AI series 4s24p3(2D5/2)nd3Do, ns3Do, nd3So, nd3Po.•Six Rydberg series 4s24p3(4S)np3P0,1,2 &4s24p3(4S)np5P1,2,3 with 54 new levels.
ISSN:0584-8547
1873-3565
DOI:10.1016/j.sab.2020.106017