Abstract
The mechanisms of heating of the electronic component of large deuterium clusters by a super-atomic ultra-short laser pulse field are considered. During pulse rise, the so-called “vacuum heating” plays the determining role. Electrons escaping from a cluster into the vacuum with a low energy return back in a time equal to the period of the laser under laser field action. The returning electrons have a higher energy (on the order of the vibrational energy in the laser radiation field), which causes cluster heating. As the laser field increases, the electronic temperature largely grows at the expense of decreasing the Coulomb potential energy of electron repulsion because of a decrease in the number of electrons. The dynamics of above-barrier cluster ionization at the leading edge of a superatomic laser pulse is calculated. The results are discussed in the light of recent experiments aimed at creating desktop sources of monoenergetic neutrons formed as a result of the fusion of deuterium nuclei in a cluster plasma.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
T. Ditmire et al., Nature (London) 398, 489 (1999).
J. Zweiback et al., Phys. Rev. Lett. 85, 3640 (2000).
M. B. Smirnov and V. P. KraÏnov, Zh. Éksp. Teor. Fiz. 115, 2014 (1999) [JETP 88, 1102 (1999)].
M. V. Fedorov, Atomic and Free Electrons in a Strong Light Field (World Scientific, Singapore, 1997).
T. Ditmire et al., Phys. Rev. A 53, 3379 (1996).
I. Last and J. Jortner, Phys. Rev. A 62, 013201 (2000).
V. P. Kraĭnov and M. B. Smirnov, Usp. Fiz. Nauk 170, 969 (2000).
L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 8: Electrodynamics of Continuous Media (Nauka, Moscow, 1982; Pergamon, New York, 1984).
Handbook of Chemistry and Physics, Ed. by D. R. Lide (CRC Press, London, 1998–1999), 79th ed.
D. Bauer and P. Mulser, Phys. Rev. A 59, 569 (1999).
H. A. Bethe and E. E. Salpeter, Quantum Mechanics of One- and Two-Electron Atoms (Academic, New York, 1957; Fizmatgiz, Moscow, 1960).
M. V. Ammosov and N. B. Delone, Laser Phys. 7, 79 (1997).
F. Brunel, Phys. Rev. Lett. 59, 52 (1987).
P. B. Corkum, Phys. Rev. Lett. 71, 1994 (1993).
N. B. Delone and V. P. Krainov, Multiphoton Processes in Atoms (Springer-Verlag, Berlin, 2000), 2nd ed.
L. V. Keldysh, Zh. Éksp. Teor. Fiz. 47, 1945 (1964) [Sov. Phys. JETP 20, 1307 (1964)].
V. P. Krainov, J. Opt. Soc. Am. B 14, 425 (1997).
V. P. Silin, Zh. Éksp. Teor. Fiz. 47, 2254 (1964) [Sov. Phys. JETP 20, 1510 (1964)].
E. Teller, Fusion (Academic, New York, 1981).
Author information
Authors and Affiliations
Corresponding author
Additional information
__________
Translated from Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, Vol. 119, No. 4, 2001, pp. 719–727.
Original Russian Text Copyright 2001 © by Kraĭnov, Smirnov.
Rights and permissions
About this article
Cite this article
Kraĭnov, V.P., Smirnov, M.B. Heating of deuterium clusters by a superatomic ultra-short laser pulse. J Exp Theor Phys 92, 626–633 (2001). https://doi.org/10.1134/1.1371344
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/1.1371344