Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Charles Joachain"'
Autor:
Charles Joachain, Niels Jan Kylstra
Publikováno v:
Physical Review A. 100
The ionization of hydrogenlike ions in short few-cycle laser pulses of high intensity is investigated using the strong-field approximation. It is found that, for light ions, the Klein-Gordon or a relativistic Schr\"odinger treatment agrees well with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a71dff19a64ea6239a24c46194b47897
https://doi.org/10.1103/physreva.100.013417
https://doi.org/10.1103/physreva.100.013417
Autor:
Charles Joachain
Publikováno v:
Journal of Modern Optics. 54:1859-1882
The R-matrix-Floquet theory is a non-perturbative ab initio approach which can be used to analyse in a unified way the various multiphoton processes occurring in atomic or molecular systems interacting with intense laser fields. The method is applica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cceb1564c983fce5ba03a56a9481f5c9
https://doi.org/10.1080/09500340701308724
https://doi.org/10.1080/09500340701308724
Publikováno v:
Laser and Particle Beams. 22:203-206
At high laser intensities, three step recollision processes such as high order harmonic generation and high-order ATI, are normally severely suppressed due to the magnetic field component of the laser pulse. However, if the laser pulse and relativist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3d4d69ea1af3840f438d34080b9db51
https://doi.org/10.1017/s0263034604223023
https://doi.org/10.1017/s0263034604223023
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 36:L303-L309
We propose a semi-relativistic symmetric eikonal distorted wave method for treating collisions of fast projectiles with light atomic targets. The projectile interaction with target electrons is described by the Li?nard?Wiechert potential, within the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51038fa5d4f840a7c4b4b5958bb1d9b4
https://doi.org/10.1088/0953-4075/36/19/l01
https://doi.org/10.1088/0953-4075/36/19/l01
Publikováno v:
Journal of Modern Optics. 50:313-329
At the high laser intensities currently available, simple descriptions of multiphoton processes based on the non-relativistic Schrodinger equation and the dipole approximation can break down. The paper first discusses how non-dipole effects, of order
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d43bfa64e81ed5f358a2bf7f09d40cf7
https://doi.org/10.1080/09500340308233532
https://doi.org/10.1080/09500340308233532
Autor:
Charles Joachain, Niels Jan Kylstra
Publikováno v:
Physica Scripta. 68:C72-C75
Relativistic effects arise when atoms interact with ultra-strong laser fields. Such effects are expected to become important when the ratio of the ponderomotive energy Up of an electron in the field to the electron rest mass energy mc2 becomes compar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76e4b02b16f9b7c45dcaa8019edbd9c0
https://doi.org/10.1238/physica.regular.068ac0072
https://doi.org/10.1238/physica.regular.068ac0072
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 34:737-747
The differential cross section for electron-hydrogen atom collisions in the presence of a CO2 laser field is analysed as a function of the incident electron energy. We show that the criticism of the second Born treatment of elastic scattering and exc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9dec98318eab82f3cea8b962f546ced
https://doi.org/10.1088/0953-4075/34/5/303
https://doi.org/10.1088/0953-4075/34/5/303
Photon emission by ions interacting with short intense laser pulses: beyond the dipole approximation
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 34:L55-L61
Photon emission by light hydrogen-like ions interacting with intense, few-cycle Ti:sapphire laser pulses is calculated within the strong-field approximation of Lewenstein and co-workers, modified so as to treat the coupling of the atom with the incid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dba3f61a8c1f4c8338d041d8ffcaddd
https://doi.org/10.1088/0953-4075/34/3/101
https://doi.org/10.1088/0953-4075/34/3/101
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 33:L743-L748
An analysis of photon emission by He+ interacting with intense, short laser pulses is presented. Employing one- and two-dimensional model atomic systems, the time-dependent Schrodinger equation is solved numerically for few-cycle laser pulses with wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a5504cad02f48e934c11777bf8301de
https://doi.org/10.1088/0953-4075/33/20/10d
https://doi.org/10.1088/0953-4075/33/20/10d
Autor:
Charles Joachain, Niels Jan Kylstra
Publikováno v:
Physical Review A. 60:2255-2268
A method for calculating the laser-assisted, electron-potential scattering differential cross section that is based on the Floquet-Lippmann-Schwinger equation is presented. The method is applied to the laser-assisted, low-energy electron-helium scatt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7180bb1434b92f61e6bd94a7c36c8b24
https://doi.org/10.1103/physreva.60.2255
https://doi.org/10.1103/physreva.60.2255