Investigation of odd-parity Rydberg states of Eu I with autoionization detection |
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Authors: | Xiao Ying Dai Chang-Jian and Qin Wen-Jie |
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Institution: | Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300191, China School of Science, Tianjin University of Technology, Tianjin 300384, China |
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Abstract: | Isolated-core-excitation (ICE) scheme and autoionization detection
are employed to study the bound Rydberg states of europium atom. The
high-lying states with odd parity have been measured using the
autoionization detection method with three different excitation
paths via 4f76s6p 8P5/2], 4f76s6p 8P7/2]
and 4f76s6p 8P9/2] intermediate states, respectively. In
this paper the spectra of bound Rydberg states of Eu atom are
reported, which cover the energy regions from 36000~cm-1 to
38250~cm-1 and from 38900~cm-1 to 39500 cm-1.
The study provides the information about level energy, the possible
J values and relative line intensity as well as the effective
principal quantum number n^* for these states. This work not only
confirms the previous results of many states, but also discovers 11
new Rydberg states of Eu atom. |
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Keywords: | europium atom isolated-core-excitation bound Rydberg state autoionization detection |
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