Výsledky vyhledávání - "T.W. Johnston"

Single-shot chirped-pulse spectral interferometry used to measure ionization dynamics of air on a femtosecond time scale

Autor: C.Y. Chien, A. Desparois, Z. Jiang, J.C. Kieffer, H. Pepin, F. Poitras, T.W. Johnston, F. Vidal, B. La Fontaine, H.P. Mercure

Publikováno v: Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39 (IEEE Cat. No.00CH37088).

Summary form only given.We have developed a new type of spectral interferometry with ultrafast temporal resolution based on the use of linearly chirped pulses. We have demonstrated that this single-shot technique can be used for measurements of the i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9977408e24b77e66d91b6fe56d0ca7c7
https://doi.org/10.1109/cleo.2000.907471

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Non-linear interaction of intense CO2radiation with dense plasma

Autor: H. Pepin, H.A. Baldis, J.N. Leboeuf, B. Grek, T.W. Johnston

Publikováno v: Nuclear Fusion. 17:1165-1185

Experimental results of the interaction of short (1.5 ns) CO2 laser pulses with solid targets at a flux reaching 1013 W/cm2 are presented. An attempt is made to carry out a global series of measurements and interpret them in the light of currently av

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::36dacbade91537ebe08d2b1b970e0c7c
https://doi.org/10.1088/0029-5515/17/6/006

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Sea-level, sediment supply and coastal changes: Examples from the coast of Ireland

Autor: R.W.G. Carter, John McKenna, T.W. Johnston, J.D. Orford

Publikováno v: Progress in Oceanography. 18:79-101

Sediment supply and pre-existing shoreline morphology are crucial factors in controlling coastal changes due to sea-level rise. Using examples from both southeast and northeast Ireland, it can be shown that sea-level change may trigger a sequence of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c42d5358552b14bb3b142c4906bf2cd6
https://doi.org/10.1016/0079-6611(87)90027-9

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Limits to plasma science

Autor: T.W. Johnston

Publikováno v: Proceedings of the IEEE. 69:149-158

Since fundamental limits to plasma science are the well-known ones of relativity and quantum mechanics, various practical limits sure discussed for plasma science in several domains of current interest: applications (mainly controlled thermonuclear f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::810cf664afea0f5ed0053bb58acf8a0b
https://doi.org/10.1109/proc.1981.11947

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Non-laminar electron beams in high magnetic fields

Autor: T.W. Johnston

Publikováno v: Proceedings of the IEE - Part B: Radio and Electronic Engineering. 105:907-917

The nature of non-laminar electron flow in long electron beams, originating from magnetically-shielded electron guns and focused by a uniform magnetic field (shielded flow) is considered. Neglecting space-charge forces, the particle equations of moti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f3d673735901e7ff8408b25a0c8a9e3
https://doi.org/10.1049/pi-b-1.1958.0209

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Collision frequency associated with high temperature air and scattering cross-sections of the constituents

Autor: I.P. Shkarofsky, T.W. Johnston, M.P. Bachynski

Publikováno v: Planetary and Space Science. 6:24-46

The plasma sheath acts as a lossy medium for electromagnetic waves, the loss being caused mainly by elastic collisions of electrons with the gas molecules, atoms and ions. In this paper, scattering cross-sections of electrons with neutral air particl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a54247e7924c0e5cde77d3b505b24a81
https://doi.org/10.1016/0032-0633(61)90004-6

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Correlation between Ion and Electron Probe Currents in a Turbulent Plasma Flow

Autor: C. Richard, T.W. Johnston, A. K. Ghosh

Publikováno v: Canadian Journal of Physics. 49:1114-1119

An experimental investigation for the justification of using the electrostatic probes for turbulent plasma diagnostics is discussed. The object is to find how faithfully the probe current fluctuations follow the electron density fluctuations, since i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a51ee017ddbbf60212e800f117001f27
https://doi.org/10.1139/p71-136

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