Zobrazeno 1 - 10 of 17 pro vyhledávání: '"R. R. E. Salomaa"'
1
Application of resonant Raman scattering of light for plasma diagnostics
Autor: R. R. E. Salomaa, M. I. K. Santala, G. T. Razdobarin, S. Yu. Tolstyakov
Publikováno v: Technical Physics Letters. 25:737-740
An application of a diagnostics method based on the scattering of laser radiation by atoms in plasma is discussed. The high sensitivity of the method is due to resonant enhancement of the Raman scattering cross section with a small offset from the ex
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0de0d04e12b90ad9cf9344c925b7c26e
https://doi.org/10.1134/1.1262618
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3
Observations of relativistic plasma waves excited by a and laser beat
Autor: François Amiranoff, G Matthieusent, A. E. Dangor, Anthony K. L. Dymoke-Bradshaw, P Gibbon, T Ashfar-Rad, R R E Salomaa, A. R. Bell, A Dyson, Colin N. Danson, Chris Edwards, S J Karttunen
Publikováno v: Plasma Physics and Controlled Fusion. 38:505-525
We report observations of a relativistic plasma wave excited by two copropagating laser beams with frequency difference close to the plasma frequency in a fully ionized hydrogen plasma. The laser beams were at (Nd:YAG) and (Nd:YLF) of 200 ps duration
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1323ffefa0ae2847944caa8b2cb46b40
https://doi.org/10.1088/0741-3335/38/4/005
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4
Diffusion by amplitude modulation in Hamiltonian systems
Autor: J. A. Heikkinen, R. R. E. Salomaa
Publikováno v: Heikkinen, J & Salomaa, R 1993, ' Diffusion by amplitude modulation in Hamiltonian systems ', Physica D: Nonlinear Phenomena, vol. 64, no. 4, pp. 365-378 . https://doi.org/10.1016/0167-2789(93)90049-7
Diffusion in Hamiltonian systems with a modulation in the force amplitude is analyzed. The modulation of the force expands the spectrum and, hence, the diffusion region, provided that the Chirikov overlap parameter exceeds the threshold for stochasti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6529b71cbfe52c1ee54498f7d8b94264
https://doi.org/10.1016/0167-2789(93)90049-7
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5
Dynamics of double stimulated Brillouin scattering
Autor: T. J. H. Pättikangas, R. R. E. Salomaa
Publikováno v: Laser and Particle Beams. 8:209-225
The pump wave reflected from the overdense plasma may play an important role in the dynamics of stimulated Brillouin scattering. The particular case of Double Stimulated Brillouin Scattering (DSBS) suggested by Zozulya, Silin, & Tikhonchuk [Sov. Phys
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69fbe608c2d26401f81a1d97f645eeb4
https://doi.org/10.1017/s0263034600007977
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6
The Concept of ITER Divertor Plasma Diagnostics by Means of LIDAR Technique
Autor: V. K. Gusev, A. Daavittila, G. T. Razdobarin, S. Yu. Tolstyakov, R. R. E. Salomaa, E. E. Mukhin
Publikováno v: Diagnostics for Experimental Thermonuclear Fusion Reactors ISBN: 9781461380207
The general considerations of Thomson and Rayleigh scattering diagnostic methods using a time-of-flight (LIDAR) principle in ITER divertor are discussed regarding the dynamic gas target divertor operation. Compatibility with specific plasma condition
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b99af550c92172a07642d51978e18a7e
https://doi.org/10.1007/978-1-4613-0369-5_31
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7
Simultaneous stimulated Raman forward and backward scattering in hot, well- underdense plasmas
Autor: R. R. E. Salomaa, S. J. Karttunen
Publikováno v: Karttunen, S & Salomaa, R 1992, ' Simultaneous stimulated Raman forward and backward scattering in hot, well-underdense plasmas ', Laser and Particle Beams, vol. 10, no. 1, pp. 75-89 . https://doi.org/10.1017/S0263034600004225
The competition of stimulated Raman forward scattering and backscattering in a hightemperature, underdense, nearly homogeneous plasma slab is investigated. In such plasmas Landau damping limits the growth of the Raman backscattering, and the weaker f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b942d64707bb8fde3bff46e9bcbbd6bf
https://cris.vtt.fi/en/publications/af0c7614-a403-490f-87d9-f1433e61ae21
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8
Modulational instability in the beat wave generation
Autor: N. Silvestre, S. J. Karttunen, G. Laval, Denis Pesme, R. R. E. Salomaa
Publikováno v: Pesme, D, Karttunen, S, Salomaa, R, Laval, G & Silvestre, N 1988, ' Modulational instability in the beat wave generation ', Laser and Particle Beams, vol. 6, no. 2, pp. 199-210 . https://doi.org/10.1017/S0263034600003943
The coupling of a large amplitude plasmon, generated by the beat-wave process, to ion acoustic waves may lead to modulational or decay instabilities, which are investigated here. A general dispersion relation obtainable from Zakharov equations predic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1431174832eda667f5ddcded24405455
https://cris.vtt.fi/en/publications/6d6912ee-1400-4d20-8b3d-3ed75d511da8
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9
Role of plasmon dephasing in beat wave acceleration
Autor: S J Karttunen, R R E Salomaa
Publikováno v: Karttunen, S & Salomaa, R 1989, ' Role of plasmon dephasing in beat wave acceleration ', Physica Scripta, vol. 39, no. 6, pp. 741-748 . https://doi.org/10.1088/0031-8949/39/6/011
Beat-wave acceleration of particles requires that the particle trajectories closely follow the constant-phase lines of the excited plasma wave. Dephasing phenomena caused by plasma inhomogeneities and by relativistic frequency shifts and the accompan
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66f1af4a01fbc7062ca79289231faa26
https://doi.org/10.1088/0031-8949/39/6/011
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10
Application and Generation of Large Amplitude Plasma Waves by Beating of Two Intense Laser Beams
Autor: S J Karttunen, R R E Salomaa
Publikováno v: Salomaa, R & Karttunen, S 1986, ' Application and generation of large amplitude plasma waves by beating of two intense laser beams ', Physica Scripta, vol. 33, no. 4, pp. 370-377 . https://doi.org/10.1088/0031-8949/33/4/012
Large amplitude plasma waves which can be created by beating two intense laser beams are applicable e.g., to particle acceleration, to induction of plasma currents, and to plasma heating. A central issue in these applications is the nonlinear behavio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::218b7dc91afaaa93bf52a04f30e94c33
https://doi.org/10.1088/0031-8949/33/4/012
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