Common Window Resonance Features in K and Heavier Alkaline Atoms Rb and Cs(Atomic and Molecular Physics)

概要

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A previous study of subvalence s-shell photoionization of potassium [Koide et al.: J. Phys. Soc. Jpn. 71 (2002) 1676] has been extended to the cases of heavier alkaline atoms Rb and Cs. We have measured the photoion time-of-flight spectra using monochromatized synchrotron radiation. Dual windows resonance structure previously observed in K was also found in Rb and Cs, suggesting that thouse structure are general features in alkaline atoms. We have observed also the Rydberg series of resonances that appear in dual windows. Our data analysis shows that the resonance widths are broad when compared with its rare gas neighbors. Based on multiconfiguration Dirac-Fock calculations, the Rydberg series of resonances were assigned to the 4s^14p^65s5p excitations embedded in the 4p^55s continua for Rb and to the 5s^15p^66s6p excitations ebedded in the 5p^56s continua for Cs.
社団法人日本物理学会の論文
2002-11-15