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Aufsatz
Femtosecond probing of sodium cluster ion Na_n ^+ fragmentation
Abstract
We report on the first femtosecond time-resolved experiments in cluster physics. The photofragmentation
dynamics of small sodium cluster ions Na_n ^+ have been studied with pump-probe techniques. Ultrashort
laser pulses of 60-fs duration are employed to photoionize the sodium clusters and to probe the
photofragments. We find that the ejection of neutral dimer Na_2 and, observed for the first time, neutral
trimer Na_3 photofragments occur on ultrashort time scales of 2.5 and 0.4 ps, respectively. This and the
absence of cluster heating reveals that direct photoinduced fragmentation processes are important at
short times rather than the statistical unimolecular decay.
dynamics of small sodium cluster ions Na_n ^+ have been studied with pump-probe techniques. Ultrashort
laser pulses of 60-fs duration are employed to photoionize the sodium clusters and to probe the
photofragments. We find that the ejection of neutral dimer Na_2 and, observed for the first time, neutral
trimer Na_3 photofragments occur on ultrashort time scales of 2.5 and 0.4 ps, respectively. This and the
absence of cluster heating reveals that direct photoinduced fragmentation processes are important at
short times rather than the statistical unimolecular decay.
Citation
In: Physical review letters. Ridge, NY : American Physical Society. Vol. 69 (1992), Nr. 10, S. 1512-1515Collections
Publikationen (Experimentalphysik III - Femtosekundenspektroskopie und ultraschnelle Laserkontrolle)Citation
@article{urn:nbn:de:hebis:34-2008102724829,
author={Baumert, Thomas and Röttgermann, C. and Rothenfusser, C. and Thalweiser, Rainer and Weiss, V. and Gerber, Gustav},
title={Femtosecond probing of sodium cluster ion Na_n ^+ fragmentation},
year={1992}
}
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2008-10-27T10:04:50Z 2008-10-27T10:04:50Z 1992 0031-9007 urn:nbn:de:hebis:34-2008102724829 http://hdl.handle.net/123456789/2008102724829 427407 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Femtosecond probing of sodium cluster ion Na_n ^+ fragmentation Aufsatz We report on the first femtosecond time-resolved experiments in cluster physics. The photofragmentation dynamics of small sodium cluster ions Na_n ^+ have been studied with pump-probe techniques. Ultrashort laser pulses of 60-fs duration are employed to photoionize the sodium clusters and to probe the photofragments. We find that the ejection of neutral dimer Na_2 and, observed for the first time, neutral trimer Na_3 photofragments occur on ultrashort time scales of 2.5 and 0.4 ps, respectively. This and the absence of cluster heating reveals that direct photoinduced fragmentation processes are important at short times rather than the statistical unimolecular decay. open access In: Physical review letters. Ridge, NY : American Physical Society. Vol. 69 (1992), Nr. 10, S. 1512-1515 Baumert, Thomas Röttgermann, C. Rothenfusser, C. Thalweiser, Rainer Weiss, V. Gerber, Gustav Extern 36.40+d 33.80.-b
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