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Kvantovaya Elektronika, 2014, Volume 44, Number 5, Pages 465–469 (Mi qe15915)  

Interaction of radiation with matter

A study of ionisation of free and clustered molecules under the action of femtosecond laser radiation

V. M. Apatina, V. O. Kompanetsa, V. N. Lokhmana, N. D. Oguroka, D. G. Poidashevab, E. A. Ryabova, S. V. Chekalina

a Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow
b Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region

Abstract: We have investigated the processes of excitation and ionisation of monomers and clusters of CF3I, IF2CCOF and Fe(CO)5 molecules under the action of femtosecond laser radiation at the wavelengths of 266, 400 and 800 nm. It is concluded that the nature of the excitation of free molecules and clustered molecules by femtosecond pulses is different. The simulation of the ionisation yield of the objects under study has shown that the multiphoton ionisation is the key mechanism in the case of free molecules, while the field ionisation may play a significant role for clusters, in particular, in the case of ionisation at the wavelength of λ = 800 nm.

Keywords: molecular clusters, multiphoton ionisation, field ionisation.

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English version:
Quantum Electronics, 2014, 44:5, 465–469

Bibliographic databases:

PACS: 33.80.Rv, 36.40.-c, 36.40.Vz
Received: 03.03.2014
Revised: 26.03.2014

Citation: V. M. Apatin, V. O. Kompanets, V. N. Lokhman, N. D. Ogurok, D. G. Poidashev, E. A. Ryabov, S. V. Chekalin, “A study of ionisation of free and clustered molecules under the action of femtosecond laser radiation”, Kvantovaya Elektronika, 44:5 (2014), 465–469 [Quantum Electron., 44:5 (2014), 465–469]

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  • Квантовая электроника Quantum Electronics
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