ZhETF, Vol. 128,
No. 1,
p. 95 (July 2005)
(English translation - JETP,
Vol. 101, No. 1,
p. 80,
July 2005
available online at www.springer.com
)
VACUUM HEATING OF LARGE ATOMIC CLUSTERS BY A SUPER-INTENSE FEMTOSECOND LASER PULSE
Getz A.V., Krainov V.P.
Received: March 11, 2005
PACS: 36.40.-c, 32.80.Rm
The analytic approach of vacuum (Brunel) heating mechanism is generalized to the case of large atomic clusters irradiated by a super-intense femtosecond laser pulse. The hydrodynamic cluster expansion is taken into account in this approach. Simple universal expressions are obtained for the absorbed laser energy by a cluster and for the radius of an expanding cluster. The absorption of laser energy and the cluster expansion are determined by only one dimensionless field parameter.
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