Resonant coherent excitation of 2s electron of Li-like Fe ions to the n = 3 states
✍ Scribed by Yoichi Nakai; T. Ikeda; Y. Kanai; T. Kambara; N. Fukunishi; K. Komaki; C. Kondo; T. Azuma; Y. Yamazaki
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 193 KB
- Volume
- 230
- Category
- Article
- ISSN
- 0168-583X
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✦ Synopsis
We observed resonant coherent excitation of the 2s electron to the n = 3 states of 83.5 MeV/u Li-like Fe 23+ ions planar-channeling in the ð2 2 0Þ plane of a Si crystal. A survival fraction of the Li-like ions was measured as a function of the angle between the incident beam and the [0 0 1] axis. Clear resonance dips corresponding to the transitions of a 2s electron to all the n = 3 states were observed. The transition of each resonance dip was identified by comparing with spectroscopic data. The resonance dips at the transition energies corresponding to the optically forbidden 2s 1/2 -3s 1/2 , 2s 1/2 -3d 3/2 and 2s 1/2 -3d 5/2 transitions were observed as well as the resonance dips at transition energies corresponding to the optically allowed 2s 1/2 -3p 1/2 and 2s 1/2 -3p 3/2 transitions.