A new characterisation of the North Atlantic eddy-driven jet using two-dimensional moment analysis

Autor: J. Perez, A. C. Maycock, S. D. Griffiths, S. C. Hardiman, C. M. McKenna

Publikováno v: Weather and Climate Dynamics, Vol 5, Pp 1061-1078 (2024)

We develop a novel technique for characterising the latitude (ϕ‾), tilt (α) and intensity (Umean) of the North Atlantic eddy-driven jet using a feature identification method and two-dimensional moment analysis. Applying this technique to the ERA5

Externí odkaz: https://doaj.org/article/64794b797ee7467093061aea3eb86e88

Sustained intensification of the Aleutian Low induces weak tropical Pacific sea surface warming

Autor: W. J. Dow, C. M. McKenna, M. M. Joshi, A. T. Blaker, R. Rigby, A. C. Maycock

Publikováno v: Weather and Climate Dynamics, Vol 5, Pp 357-367 (2024)

It has been proposed that externally forced trends in the Aleutian Low can induce a basin-wide Pacific sea surface temperature (SST) response that projects onto the pattern of the Pacific Decadal Oscillation (PDO). To investigate this hypothesis, we

Externí odkaz: https://doaj.org/article/db3ac2575ee644baa791ea45818cae39

Progress on collisionally pumped optical-field-ionization soft x-ray lasers

Autor: Tomas Mocek, Brigitte Cros, Sophie Kazamias, A.J. Gonzalves, C M McKenna, Simon M. Hooker, David Ros, Stéphane Sebban, S. Le Pape, Bedřich Rus, Annie Klisnick, Gerard Jamelot, Gilles Maynard, Pierre Agostini, P. Balcou, I. Bettaibi, Pierre Breger, David J. Spence, J.-F. Wyart, L. Upcraft, Constance Valentin, A. Butler, Ph. Zeitoun

Publikováno v: IEEE Journal of Selected Topics in Quantum Electronics
IEEE Journal of Selected Topics in Quantum Electronics, 2004, 10 (6), pp.1351-1362. ⟨10.1109/JSTQE.2004.838039⟩
IEEE Journal of Selected Topics in Quantum Electronics, Institute of Electrical and Electronics Engineers, 2004, 10 (6), pp.1351-1362. ⟨10.1109/JSTQE.2004.838039⟩

International audience; We present the status of optical field ionization soft X-ray lasers. The amplifying medium is generated by focusing a high-energy circularly polarized 30-fs 10-Hz Ti: sapphire laser system in a gaseous medium. Using xenon or k

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb2660c837c7e1d43b6e1170489864eb
https://doi.org/10.1109/jstqe.2004.838039

Opacity measurements of a hot iron plasma using an x-ray laser

Autor: M. Koslova, M. H. Edwards, B. Rus, D. S. Whittaker, C. L. S. Lewis, Geoffrey J. Pert, Tomas Mocek, Alice Delserieys, G.J. Tallents, Nicola Booth, C M McKenna, P. Mistry, D. Neely, M. M. Notley

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2006, 97 (3), ⟨10.1103/PhysRevLett.97.035001⟩

The temporal evolution of the opacity of an iron plasma at high temperature (30--350 eV) and high density ($0.001--0.2\text{ }\text{ }\mathrm{g}\text{ }{\mathrm{cm}}^{\ensuremath{-}3}$) has been measured using a nickel-like silver x-ray laser at 13.9

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d72978f50ed9b56c08ac24c00211d9a
https://pubmed.ncbi.nlm.nih.gov/16907506

Plasma Opacity and Laser Ablation Measurements Using X-Ray Lasers

Autor: Greg J. Tallents, M. H. Edwards, Geoffrey J. Pert, Alice Delserieys, M. M. Notley, Ciaran Lewis, M. Stupka, D. S. Whittaker, Tomas Mocek, H. Huang, B. Rus, A. R. Praeg, Nicola Booth, D. Neely, Jiri Polan, P. Homer, M. Koslova, C M McKenna, P. Mistry

Publikováno v: X-Ray Lasers 2006
X-Ray Lasers 2006, 115, Springer Netherlands, pp.445-454, 2006, Springer Proceedings in Physics, ⟨10.1007/978-1-4020-6018-2_55⟩
Springer Proceedings in Physics ISBN: 9781402060175

The use of x-ray lasers as probes of the opacity of hot dense plasma and rates of laser ablation is considered. It is shown that x-ray lasers are sufficiently bright to overcome plasma emission and enable plasma opacity to be measured. A demonstratio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cd3704329b6525bb5aeaae4216dcd9d
https://hal.archives-ouvertes.fr/hal-02429958