Three-photon ionization of aligned Ba atoms

Суран, В. В.; Бондар, І. І.; Dudich, M.I.

doi:10.1117/12.239767

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Results Of Investigations Of the N 2+ (ω) Functions1

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2000

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“…The results of detailed investigations of the Ba + and Sr + ion yields in the above spectral range at the same values have been presented in our previous papers [17][18][19][20][21][22][23]. Therefore, we Vertical bars with numbers beneath the frequency scale indicate the frequencies ω nm corresponding to the following one-photon transitions: 1, 5d6p 1 F o 3 -6p 2 1 D 2 ; 2, 5d6p 3 P o 1 -6p 2 1 S 0 ; 3, 5d6p 3 P o 1 -6p 2 3 P 0 ; 4, 5d6p 1 F o 3 -6s7d 1 D 2 ; 5, 5d6p 1 F o 3 -6s7p 3 D 2 ; 6, 5d6p 1 F o 3 -6s7p 3 D 3 .…”

Section: Results Of Investigations Of the N 2+ (ω) Functionsmentioning

confidence: 65%

Resonant structure in doubly charged ion formation during multiphoton ionization of Sr and Ba atoms by infrared laser radiation

Бондар¹,

Суран²,

Dudich³

2000

J. Phys. B: At. Mol. Opt. Phys.

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Experimental investigations of resonant structure in doubly charged ion (A 2+ ) formation were carried out during Sr and Ba atom ionization by infrared laser radiation (ω = 8400-9100 cm −1 ). It has been shown that in this case the mechanism of ion formation is a two-electron process-the ions are produced immediately from the neutral atoms. It has been found for the first time that the resonant structure in A 2+ ion formation in such conditions is due to the excitation and ionization of neutral-atom mixed states. The atomic-state mixing in this case results from the Stark effect provided that the polarizability of these states is very high.

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