Zobrazeno 1 - 10
of 86
pro vyhledávání: '"D. Comtois"'
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 38:1923-1933
We ionized He, Ne and Ar in the tunnelling regime with a linearly polarized laser pulse and measured the ion-recoil momentum distribution on an axis perpendicular to laser polarization for two different wavelengths (l = 800 nm and l = 1800 nm). We ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75ca51ff117a100dae886a15118299e2
https://doi.org/10.1088/0953-4075/38/12/008
https://doi.org/10.1088/0953-4075/38/12/008
Autor:
T. W. Johnston, J. C. Kieffer, I. Gallimberti, P. Lalande, F.A.M. Rizk, D. Comtois, H. Pépin, P. Couture, C. Y. Chien, B. La Fontaine, François Martin, C. Potvin, A. Bondiou-Clergerie, H.P. Mercure, F. Vidal
Publikováno v:
IEEE Transactions on Plasma Science. 31:387-395
We have used the Bondio-Gallimberti model of positive leader propagation to simulate laboratory experiments of laser triggering and guiding of upward leaders initiated from a ground rod. The model proves to be capable of reproducing all the important
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0d74978e8d434acd5f7dec57e42f44b
https://doi.org/10.1109/tps.2003.811649
https://doi.org/10.1109/tps.2003.811649
Autor:
B. La Fontaine, P. Couture, F. Vidal, C. Y. Chien, P. Lalande, T. W. Johnston, A. Bondiou-Clergerie, F.A.M. Rizk, H. Pépin, D. Comtois, J. C. Kieffer, H. P. Mercure, I. Gallimberti, François Martin, C. Potvin
Publikováno v:
IEEE Transactions on Plasma Science. 31:377-386
Using a plasma channel produced by an ultrashort laser pulse, we have studied the laser triggering and guiding of a positive leader from the tip of a 2-m vertical rod standing on the bottom plane of a 7-m plane-plane gap. The purpose of this setup wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e61c3c4055774582b9da5040173c479
https://doi.org/10.1109/tps.2003.811650
https://doi.org/10.1109/tps.2003.811650
Autor:
D. Comtois, Bruno La Fontaine, Henri Pépin, A. Desparois, Jean-Claude Kieffer, François Martin, F. Vidal, C. Y. Chien, T. W. Johnston, H. P. Mercure, C. Potvin, F.A.M. Rizk
Publikováno v:
Comptes Rendus Physique. 3:1361-1374
This paper summarizes the research this team has performed over the past few years investigating laboratory electrical breakdown discharges in the presence of a plasma cylinder created by a single ultrashort laser pulse. This work is part of a feasib
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a83fe3e11719730bb76bcf1981c2058a
https://doi.org/10.1016/s1631-0705(02)01411-1
https://doi.org/10.1016/s1631-0705(02)01411-1
Autor:
J. C. Kieffer, D. Comtois, François Martin, H. P. Mercure, F. Vidal, I. Gallimberti, R. Mawassi, Henri Pépin
Publikováno v:
Applied Spectroscopy. 56:1444-1452
Time-resolved visible spectroscopy of plasmas produced by laser breakdown of air using femtosecond Nd laser pulses (50–300 mJ, 500 fs) reveals features not observed with nanosecond laser pulses. Emission is initially dominated by molecular lines, s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08fe21160fea5b8a546b23fea709feb0
https://doi.org/10.1366/00037020260377742
https://doi.org/10.1366/00037020260377742
Autor:
H. P. Mercure, A. Bondiou-Clergerie, B. La Fontaine, F. Vidal, J. C. Kieffer, F.A.M. Rizk, Henri Pépin, D. Comtois, T. W. Johnston, I. Gallimberti
Publikováno v:
IEEE Transactions on Plasma Science. 30:1339-1349
With the aim of elucidating the role of thermal effects in air in the leader propagation, the properties of the ionized air (charged species densities, electric field, and air temperature) in a limited region near the tip of the positive leader were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8f70473a150b550039ac62c64949df5
https://doi.org/10.1109/tps.2002.801538
https://doi.org/10.1109/tps.2002.801538
Autor:
J. C. Kieffer, I. Gallimberti, A. Bondiou-Clergerie, F.A.M. Rizk, C. Potvin, P. Couture, P. Lalande, T. W. Johnston, H. P. Mercure, A. Desparois, C. Y. Chien, F. Vidal, B. La Fontaine, François Martin, D. Comtois, Henri Pépin
Publikováno v:
Physics of Plasmas. 8:2532-2539
The triggering and guiding of leader discharges using a plasma channel created by a sub-joule ultrashort laser pulse have been studied in a megavolt large-scale electrode configuration (3–7 m rod-plane air gap). By focusing the laser close to the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c0cb7be658ba449ccf807a5a3c547b5
https://doi.org/10.1063/1.1342230
https://doi.org/10.1063/1.1342230
Autor:
Henri Pépin, F.A.M. Rizk, Pierre Couture, C. Potvin, Bruno La Fontaine, C. Y. Chien, H. P. Mercure, François Vidal, Geneviève Jarry, T. W. Johnston, Frédéric Génin, A. Desparois, D. Comtois, Jean-Claude Kieffer, François Martin, Raafat Mawassi
Publikováno v:
Journal of Applied Physics. 88:610-615
Using the nonlinear propagation properties of ultrashort laser pulses in air, we were able to produce long ionized filaments that served to guide spark discharges. With a laser pulse energy of 20 mJ, one or two ionized filaments were created and coul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f4c4aa377fad90d206e328a5a96b58c
https://doi.org/10.1063/1.373710
https://doi.org/10.1063/1.373710
Autor:
D. Comtois, François Vidal, A. Desparois, A. Bondiou-Clergerie, T. W. Johnston, H. Pépin, H. P. Mercure, B. La Fontaine, F.A.M. Rizk, C. Y. Chien, J. C. Kieffer
Publikováno v:
IEEE Transactions on Plasma Science. 28:1755-1762
In an ongoing effort to understand how ultrashort pulse lasers can be used to trigger spark discharges in air over considerable distances at electric fields much below that of self-breakdown, we have studied the influence of the laser pulse energy on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::928610279dfd775ea5fd3dd8fb3902bf
https://doi.org/10.1109/27.901264
https://doi.org/10.1109/27.901264
Autor:
F.A.M. Rizk, C. Y. Chien, François Vidal, A. Desparois, H. P. Mercure, T. W. Johnston, H. Pépin, J. C. Kieffer, B. La Fontaine, D. Comtois
Publikováno v:
IEEE Transactions on Plasma Science. 27:688-700
In an ongoing program using ultrashort laser pulses to provoke discharges in air over considerable distances at electric fields below breakdown threshold, we have studied the conditions for the onset of streamers in such laser-produced plasmas, both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::789cb5b06255f2b5ad5d1572d10655d9
https://doi.org/10.1109/27.774673
https://doi.org/10.1109/27.774673