Improved Characteristics of Laser Source of Ions Using a Frequency Mode Laser

Journal Article · Mon Apr 07 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2917020· OSTI ID:21137029

Khaydarov, R T ^[1]

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1. Scientific Research Institute of Applied Physics at the National University of Uzbekistan, Vuzgorodok-17, 700174-Tashkent (Uzbekistan)

We used a mass-spectrometric method to investigate the characteristics of laser-produced plasma ions depending on the nature of the target and on the parameters of the laser radiation. Experiments are carried out on porous Y{sub 2}O{sub 3} targets with different densities {rho}, subjected to a laser radiation, where the laser works in a frequency mode (v = l-12 Hz). We found that the laser frequency has a significant effect on the parameters of plasma ions: with increasing the frequency of the laser the charge, energy and intensity of ions increase for a given parameters of the target. This effect is more pronounced for small densities of the target. We related these two effects to a non-linear ionization process in the plasma due to the formation of dense plasma volume inside the sample absorbing the laser radiation and to the change of the focusing conditions in the case of the frequency mode laser.

• OSTI ID: 21137029
• Journal Information: AIP Conference Proceedings, Vol. 996, Issue 1; Conference: 17. IAEA technical meeting on research using small fusion devices, Lisbon (Portugal), 22-24 Oct 2007; Other Information: DOI: 10.1063/1.2917020; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
INERTIAL CONFINEMENT
IONIZATION
IONS
LASER RADIATION
LASER TARGETS
LASER-PRODUCED PLASMA
LASERS
MASS SPECTROSCOPY
NONLINEAR PROBLEMS
PLASMA DENSITY
PLASMA PRODUCTION
POROUS MATERIALS
YTTRIUM OXIDES