期刊
CHEMICAL PHYSICS LETTERS
卷 408, 期 1-3, 页码 65-70出版社
ELSEVIER
DOI: 10.1016/j.cplett.2005.04.001
关键词
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Optimization of multiphoton ionization of atomic calcium has been studied by adaptive femtosecond laser pulse shaping together with ion and electron spectroscopy. The photoelectron spectrum obtained following ionization of calcium utilizing 800 nm femtosecond laser pulses consists of three major contributions which can be assigned to ionization channels via intermediate ionic and doubly excited resonances. On the basis of the results found in the optimization experiments performed on the ion and electron signals, we conclude that non-sequential double ionization involves the Ca**(3d(2)) bound doubly excited state as well as states of the Ca**(3dnl) and the Ca**(4pnl) manifolds as intermediate resonances. (c) 2005 Elsevier B.V. All rights reserved.
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