| Original Articles |
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Measurements of Laser Absorption and Ion Energy in Femtosecond Laser--Cluster Interaction |
| LIN Jing-Quan; ZHANG Jie; LI Ying-Jun; CHEN Li-Ming;LÜ Tie-Zheng;TENG Hao;MAN Bao-Yuan;ZHAO Li-Zeng |
| Laboratory of Optical Physics, Institute of Physics, Chinese
Academy of Sciences, Beijing 100080
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| Cite this article: |
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LIN Jing-Quan, ZHANG Jie, LI Ying-Jun et al 2001 Chin. Phys. Lett. 18 211-213 |
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Abstract Laser absorption is measured in Xe, Ar and He clusters irradiated by 5 mJ laser pulses in 150 fs. The measurements show that the absorption efficiency strongly depends on the backing pressure of the gas jets, the laser pulse duration and the atomic number Z of the working gas. The laser absorption for Xe clusters is found to be as high as 45% at a backing pressure of 20 atm and a laser intensity of 1 x 1015 W/cm2. Significant numbers of ions with energies up to 100 keV are detected from Xe cluster explosion. The variation trend of the average ion energy at different backing pressures is consistent with that of the laser energy absorption.
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| Keywords:
36.40.Gk
52.50.Jm
52.25.Nr
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Published: 01 February 2001
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| PACS: |
36.40.Gk
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(Plasma and collective effects in clusters)
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52.50.Jm
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(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
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52.25.Nr
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