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Bubble formation and decay in 3He and 4He clusters.

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journal contribution
posted on 06.08.2007, 09:04 by Klaus von Haeften, Tim Laarmann, Hubertus Wabnitz, Thomas Möller
The energy transfer in 3He and 4He clusters electronically excited by monochromatic synchrotron radiation is investigated by luminescence spectroscopy. Depending on the cluster size and the isotopic constitution, either sharp, broadened, or shifted emission bands of single He molecules are observed. The spectral features show that He molecules emit light either within a bubble inside the cluster or in the vacuum after desorption from the cluster. From the luminescence intensity, the cluster diameter, and the radiative lifetime, an average velocity of ~7 m/s of bubbles in 4He clusters could be deduced. In the nonsuperfluid 3He clusters this velocity was observed to be significantly lower.

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Citation

Physical Review Letters, 2002, 88 (23), pp.233401-1 - 233401-4.

Published in

Physical Review Letters

Publisher

American Physical Society.

Available date

06/08/2007

Publisher version

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.88.233401

Notes

This is the version as published by the American Physical Society and available through their website http://prl.aps.org/

Language

en

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