Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Gregory J. Tallents"'
The time varying ratio of intensities of resonance lines of H- and He-like ions in laser irradiated cylindrical fibre targets is analysed using a hydro/atomic physics code. Correspondence between the ratio and gain on the Balmer α transition of H-li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef30ac6d112c9cfd9b5a32206b1849c4
https://doi.org/10.1016/0030-4018(93)90047-9
https://doi.org/10.1016/0030-4018(93)90047-9
Publikováno v:
Scopus-Elsevier
Short-pulse laser heating offers the opportunity of creating plasmas of very high energy density in the laboratory. Measurements of the radiative properties of such plasmas are now starting to be performed. Some attempt has been made to reduce the sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40dff01d0f3811770e00dd3078f73408
https://doi.org/10.1016/s0022-4073(99)00063-1
https://doi.org/10.1016/s0022-4073(99)00063-1
Autor:
Arif Demir, R.M.N. O'Rourke, Gregory J. Tallents, Geoffrey J. Pert, Andrew MacPhee, David Ros, Ciaran Lewis, Ph. Zeitoun, Jiunn-Yuan Lin
Publikováno v:
Optics Communications. 166:211-218
A ∼3 ps travelling wave chirped pulse amplified pulse at 6×10 14 W cm −2 superimposed on ∼300 ps background pulses is shown to be an efficient method to pump transient collisional excitation X-ray lasers in both Ni-like and Ne-like ions. Measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af58249ced012d47c6df6baeb34c65a7
https://doi.org/10.1016/s0030-4018(99)00269-2
https://doi.org/10.1016/s0030-4018(99)00269-2
Autor:
Andrew MacPhee, Gregory J. Tallents, Geoffrey J. Pert, Jiunn-Yuan Lin, Roland Smith, David Neely, Joseph Nilsen, R.M.N. O'Rourke, Jie Zhang, E. Wolfrum, Ciaran Lewis
Publikováno v:
Optics Communications. 158:55-60
Driven by a double 75 ps pulse with 2.2 ns separation, saturated operation of nickel-like Ag, In, Sn, and Sm X-ray lasers have been demonstrated with only 75 J drive energy on target. The variation of X-ray laser output with target length is found to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2f34d32960a1e07d73dad97616cd4a1
https://doi.org/10.1016/s0030-4018(98)00577-x
https://doi.org/10.1016/s0030-4018(98)00577-x
Autor:
Milan Kalal, B. Králiková, Arif Demir, G. Jamelot, S Sebban, Annie Klisnick, Jiri Skala, Bedřich Rus, Gregory J. Tallents, P. Zeitoun, Tomas Mocek
Publikováno v:
Physical Review A. 56:4229-4241
This paper presents the results of a comparative experimental study of low-temperature Zn and Cu line plasmas created on slab targets by 400-ps laser pulse producing irradiance from $4\ifmmode\times\else\texttimes\fi{}{10}^{9}$ to ${10}^{11}{\mathrm{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a3ff8186cf58e4a9f661537968c37e0
https://doi.org/10.1103/physreva.56.4229
https://doi.org/10.1103/physreva.56.4229
Publikováno v:
Journal of Physics D: Applied Physics. 30:2872-2879
We have measured the density profiles of a pulsed gas jet expanding into vacuum in order to characterize its suitability as a target for laser - plasma interaction studies. A Mach - Zehnder interferometer has been used to measure the densities for ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c873171fd3f740401a407b1a8d27f36
https://doi.org/10.1088/0022-3727/30/20/014
https://doi.org/10.1088/0022-3727/30/20/014
Autor:
Jie Zhang, Jiunn-Yuan Lin, Gregory J. Tallents, E. Wolfrum, Joseph Nilsen, Andrew MacPhee, M. H. Key, P.J. Warwick, Roland Smith, Geoffrey J. Pert, Colin N. Danson, David Neely, Justin Wark, Ciaran Lewis
Publikováno v:
Scopus-Elsevier
The current saturated operation of X-ray lasers at wavelengths > 15 nm requires at least kilojoule drive energy, which is only available at the largest laser installations in the world. Using a specially designed drive pulse configuration, saturated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b7a32c515f8c3782bde7b052abd89d7
https://doi.org/10.1016/s0375-9601(97)00553-7
https://doi.org/10.1016/s0375-9601(97)00553-7
Autor:
Andrew MacPhee, M. Holden, P.J. Warwick, Annie Klisnick, P. Goedkindt, Ciaran Lewis, M. Nantel, Pierre Jaegle, Ph. Zeitoun, I. Weaver, Gregory J. Tallents, Arif Demir, Gerard Jamelot, Stéphane Sebban, Antoine Carillon, B. Rus, J. Krishnan
Publikováno v:
Scopus-Elsevier
We have studied the effect of prepulses in enhancing the efficiency of generating ASE beams in soft X-ray laser plasma amplifiers based on pumping Ne-like ions. Slab targets were irradiated with a weak prepulse followed by a main plasma heating pulse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56373ce306aa493c41179f66f915a869
https://doi.org/10.1016/s0030-4018(96)00435-x
https://doi.org/10.1016/s0030-4018(96)00435-x
Autor:
David Neely, C.G. Smith, Gregory J. Tallents, Ciaran Lewis, G. Cairns, J. Krishnan, M.H. Key, L. Dwivedi, Andrew MacPhee, S.A. Ramsden
Publikováno v:
Optics Communications. 130:69-74
A beam of amplified spontaneous emission at 23.2 23.6 nm from a GeXXIII XUV laser has been injected into a separate amplifier plasma and the astigmatic aberrations introduced by plasma density gradients in the amplifier have been estimated from analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55ad211e975e51382fc8d1af5970b01f
https://doi.org/10.1016/0030-4018(96)00227-1
https://doi.org/10.1016/0030-4018(96)00227-1
Autor:
Philippe Zeitoun, Gregory J. Tallents, Arif Demir, D. Schlogl, E.E. Fill, J. Krishnan, B. Rus, M. Nantel, M. Holden, Annie Klisnick, Antoine Carillon, Pierre Jaegle, Gerard Jamelot, Ciaran Lewis, A.G. McPhee
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 80:255-258
Future development of X-ray lasers (XRL) applications goes through a reduction of the driver energy. Amplification close or inside the “water window” using the Li-like recombination scheme was tested. A gain of ∼0.8 cm −1 at 5.77 nm (Ca 17+ )
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebcfff04e71eb9b6ba16471f73e9bb3a
https://doi.org/10.1016/0368-2048(96)02969-6
https://doi.org/10.1016/0368-2048(96)02969-6