Investigation of highly excited states of calcium by three-photon ionization |
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Authors: | R?S?Dygda?a A?Zawadzka Email author" target="_blank">D?LisakEmail author P?P?óciennik R?S?Trawiński |
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Institution: | (1) Instytut Matematyki, Akademia Bydgoska im. Kazimierza Wielkiego, Chodkiewicza 30, 85-064 Bydgoszcz, Poland;(2) Instytut Fizyki, Uniwersytet Miko aja Kopernika w Toruniu, ul. Grudziadzka 5/7, 87-100 Toru , Poland |
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Abstract: | The three-photon ionization in Ca from
S0 ground state is studied. The two-photon process is a near -- resonance process with one of the following bound states: 4s4d
1D2, 4p
P2, 4s6s
1S0, 4
D2 and 4
S0 while the third photon reach either directly the continuum or one of the autoionizing states. The succession of bound states as well as the transitions above the ionization limit are discussed. The dynamics of the multiphoton excitation processes is also discussed and radiative decay of 4
S0 Ca state with two-photon excitation as well as (the measured) decay times of the Ca autoionizing states using the proper line profiles for different quantum numbers has been determined.Received: 29 September 2003, Published online: 18 May 2004PACS:
32.70.-n Intensities and shapes of atomic spectral lines - 32.70.Cs Oscillator strengths, lifetimes, transition moments - 32.80.Fb Photoionization of atoms and ions - 32.80.Rm Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) |
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