論文

査読有り
1997年

Laser spectroscopy of thulium atoms implanted in liquid and solidHe

Physical Review B - Condensed Matter and Materials Physics
  • Kiyoshi Ishikawa
  • ,
  • Atsushi Hatakeyama
  • ,
  • Koichi Gosyono
  • ,
  • Shigeaki Wada
  • ,
  • Yoshiro Takahashi
  • ,
  • Tsutomu Yabuzaki

56
2
開始ページ
780
終了ページ
787
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.56.780

The excitation, emission spectra, and decay curves of the emission intensity of thulium atoms implanted in liquid and solid helium were observed in the presence and absence of an external magnetic field. The observed narrow line (width (Formula presented) nm) of the excitation spectrum at 590.60 nm is assigned as a zero-phonon transition from the electronic ground state (Formula presented), which indicates that the transition between the inner shells is weakly perturbed by surrounding helium atoms. The pressure dependence of the emission wavelength suggests that the symmetry of helium atoms distributed around a thulium atom in the solid phase is similar to that in the liquid phase. The emission intensity was stable and large in the solid phase since thulium atoms were trapped at a density of 10(Formula presented)-10(Formula presented) atoms/cm(Formula presented). The lifetime of the excited state was measured to be (Formula presented)s, which was longer than that of the (Formula presented) state of free thulium atoms. The excited state is expected to be a mixed state of the (Formula presented) and (Formula presented) configurations. The metastable state (Formula presented) is populated by a radiative transition from this excited state and relaxes to the ground state through a magnetic dipole transition. The lifetime of the metastable state of a neutral thulium atom was measured to be (Formula presented) ms. © 1997 The American Physical Society.

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.56.780
ID情報
  • DOI : 10.1103/PhysRevB.56.780
  • ISSN : 1550-235X
  • ISSN : 1098-0121
  • SCOPUS ID : 0001311106

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