Interaction of laser radiation with matter. Laser plasma

Production of doubly charged ions in the ionisation of Ba atoms in two laser fields

I. I. Bondar', V. V. Suran

Department of Physics, Uzhgorod State University, Uzhgorod

Abstract: The production of doubly charged ions is studied upon multiphoton ionisation of Ba atoms exposed simultaneously to two radiation fields: the fundamental radiation of a colour centre laser (ω = 8800 – 8880 cm^-1) and its second harmonic. A two-electron mechanism was shown to be responsible for the production of these ions.

PACS: 32.80.Rm

Received: 26.07.2001

 English version: Quantum Electronics, 2001, 31:12, 1079–1083

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