Results 251 to 260 of about 2,640,465 (292)

Laser wakefields in plasmas: Wavebreaking and the resonant laser plasma acceleration

AIP Conference Proceedings, 1995
Laser induced wakefields are investigated analytically and numerically. Wavebreaking limits are evaluated. In the case of resonant plasma acceleration wavebreaking restricts the number of useful pulses.
J. L. Bobin, G. Bonnaud, D. Teychenné
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INFRARED PLASMA DIAGNOSTICS WITH LASERS

Infrared Physics, 1976
Abstract Infrared lasers have rendered possible measurements of plasma parameters in a range not accessible using either optical or microwave techniques. Diagnostic methods based on the refraction and scattering of radiation by free electrons are discussed.
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Amplification in recombining plasmas (plasma lasers)

Soviet Physics Uspekhi, 1974
A review is given of the investigations of lasers in which the amplifying medium is a rapidly recombining (supercooled in respect to free electrons) dense plasma. Efficient amplification of visible and ultraviolet radiation is possible in a plasma with a free-electron density Ne = 1013-1018 cm-3 and an electron temperature Te=0.05-2 eV.
L.I. Gudzenko, Leonid A. Shelepin, Sergei I. Yakovlenko   +2 more
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Effect of laser on the plasma arc in laser-plasma hybrid welding

Journal of Laser Applications
This paper investigates the influence of laser on the plasma arc in laser-plasma hybrid welding. First, the external characteristics of the welding power supply were measured, the arc morphology was captured, and the weld bead morphology was analyzed. Then, a three-dimensional mathematical model was established to describe the interaction between the ...
Maohong Yang, Detao Cai, Shiyi Gao, Weiping Fang, Ziyi Luo, Jiankang Huang, Volodymyr Korzhyk   +6 more
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Plasma waves in laser fusion plasmas

Canadian Journal of Physics, 1986
This paper presents a review of plasma wave generation in laser-produced plasmas. A general review is given of stimulated scattering phenomena and the use of Thomson scattering techniques to diagnose waves in plasma. Two examples of the application of such methods are given: one is the simultaneous measurement of plasma and ion waves produced by the ...
H. A. Baldis, D. M. Villeneuve, C. J. Walsh   +2 more
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Polarization of the laser induced plasma lasers

Optics Communications, 2019
Abstract We report a systematic study of the generation line polarization of optically pumped Laser Induced Plasma Lasers. Results are presented for the elements of the 13th group with ground state configuration ns np 2 P 1∕2 ; 3∕2 . Degree of polarization depends on pumping light polarization, spin states of ground, and pumped
L. Nagli, Y. Raichlin
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PLASMA REFRACTIVE EFFECTS IN HCN LASERS*

Annals of the New York Academy of Sciences, 1969
Plasma refractive index effects in pulsed HCN lasers, calculating stable cavity mirror curvatures constriction as function of electron density by ray matrix ...
B W, McCaul, A L, Schawlow
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Laser plasmas

Applied Physics B Photophysics and Laser Chemistry, 1982
W. Seka, L. M. Goldman, J. M. Soures, R. S. Craxton, T. Boehly, R. L. Keck, K. Tanaka, R. Boni, B. Yaakobi, R. Bingham, E. Williams, R. W. Dreyfus, P. Bogen, H. Langer, H. A. Baldis, C. J. Walsh, Xu Zhi-zhan, Xu Yu-guang, Yin Guang-yu, Zhang Yan-zhen, Yu Jiajin, P. H. Y. Lee, K. Eldmann, A. G. M. Maaswinkel, R. Sigel, S. Witkowski, R. J. Harrach, A. Szoke, M. C. Richardson, W. Friedman, D. M. Villeneuve, J. Hoose, S. Letzring, J. Rizzo, J. Delettrez, K. Lee, C. Verdon, B. Brinker, R. Hutchison, L. Iwan, R. L. McCrory   +40 more
  +4 more sources

Characterization of laser plasmas for interaction studies

Physical Review E, 1994
Long scale length plasmas were produced by uniform laser irradiation from opposite sides of metal disks coated on thin plastic stripe targets. The plasma became fully underdense before the end of the 600-ps pulse. The evolution of the plasma was carefully characterized both in electron density and temperature, and the experimental data were compared to
GIZZI LA, GIULIETTI, DANILO, GIULIETTI A, AFSHARRAD T, BIANCALANA V, CHESSA P, DANSON C, SCHIFANO E, VIANA SM, WILLI O.   +9 more
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Lasers for laser-plasma acceleration

Proceedings of the International School of Physics “Enrico Fermi”
In this lecture we will review some of the requirements when designing and operating laser systems for laser-plasma acceleration. We will analyse the impact of the different components of the laser system on the final output and discuss how they can be mitigated against or prevented. We will study some of the existing laser facilities used for particle
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