Studies on odd-parity states of the Sm atom |
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Authors: | Guan Feng Dai Chang-Jian and Zhao Hong-Ying |
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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 { rm
300384, China |
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Abstract: | Two-step excitation and ionization processes are used to detect Sm
atoms in many excited states populated with tunable lasers. The
wavelength of the first laser is tuned to the resonances from the Sm
4f$^{6 }$6s$^{2}$ ${}^7F_{J}$ ($J$=0--6) states to many odd-parity
states with different electronic configurations, where the atoms are
detected by photoionization process using an ultraviolet laser with
a wavelength of 355\,nm. Precise measurements on the energy level
and intensity for many Sm 4f$^{6}$ 6s6p and 4f$^{5}$5d6s$^{2}$
states have been carried out. In a theoretical analysis on the
spectral data, such as peak position, relative intensity, many
transitions can be identified as the resonances from the Sm 4f$^{6
}$6s$^2$ $^7F_{J }$ ($J$=0--6) states to the atomic states with
4f$^{6 }$6s6p and 4f$^{5}$5d6s$^{2}$ electronic configurations.
This work also reports many spectral data on the
odd-parity states that cannot be found in the literature. |
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Keywords: | spectra of Sm atom odd-parity
excited state photoionization detection |
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