Zobrazeno 1 - 10
of 69
pro vyhledávání: '"C J Noble"'
Autor:
M. Plummer, C. J. Noble
Publikováno v:
Journal of Physics: Conference Series. 1412:132053
Synopsis An extension of ab initio many-electron R-matrix theory is described which is relevant both to the time-dependent description of excitation and single and double ionization of atoms in laser pulses, and to time-independent calculation of int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b51646ce392b06201713fa0c8bd1ddd9
https://doi.org/10.1088/1742-6596/1412/13/132053
https://doi.org/10.1088/1742-6596/1412/13/132053
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 36:L219-L226
We present ab initio calculations for argon in a KrF laser field for intensities up to around 1014 W cm−2. We study the dynamics of Floquet field-atom states in laser pulses with time-varying amplitudes. We show how the pulse length and shape can b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3972d656fdeefed43f104fad66b11d71
https://doi.org/10.1088/0953-4075/36/13/104
https://doi.org/10.1088/0953-4075/36/13/104
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 34:2267-2279
A coupled channel approximation has been employed to calculate cross sections for positron collisions with He+(1s) in the energy ranges 0-40.8, 40.8-47 and 50-250 eV. In the lowest energy interval only elastic scattering is possible whereas in the in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4f6268b423a94c543fcdca76a51ca69
https://doi.org/10.1088/0953-4075/34/11/318
https://doi.org/10.1088/0953-4075/34/11/318
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 33:L807-L817
We perform Floquet calculations of multiphoton ionization of argon in a KrF laser field for intensities up to 1014 W cm-2. As far as we are aware these results are the first ab initio Floquet calculations for a many-electron system at these intensiti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a0cb1dba44e122850608329abcdd04e
https://doi.org/10.1088/0953-4075/33/21/103
https://doi.org/10.1088/0953-4075/33/21/103
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 32:L345-L353
We describe a generalized Lagrangian mesh basis set which allows efficient (using an energy-independent inner region) variational R-matrix calculations to be performed for electron scattering by arbitrary atoms and atomic ions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f99ecbd7936c1015739b6850892e3be1
https://doi.org/10.1088/0953-4075/32/14/102
https://doi.org/10.1088/0953-4075/32/14/102
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 31:3609-3619
Inner valence and Rydberg energy levels have been calculated for as a function of internuclear separation. Electron scattering from was solved for negative scattering energies in an R-matrix method which allowed the inclusion of Rydberg states in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f44089e8957b059c581e8b2053cb609d
https://doi.org/10.1088/0953-4075/31/16/014
https://doi.org/10.1088/0953-4075/31/16/014
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 28:4481-4500
Using the recently proposed R-matrix Floquet theory we have performed ab initio calculations for single- and multiphoton detachment of the negative hydrogen ion, H-. Our method is non-perturbative in the field strength and is a multielectron theory a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df81666859eb41e4a9e441a1da856710
https://doi.org/10.1088/0953-4075/28/20/011
https://doi.org/10.1088/0953-4075/28/20/011
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 28:3545-3558
For pt.III see ibid., vol.26, p.L275 (1993) We present the first application of the R-matrix-Floquet theory to the study of a collisional process in a laser field, namely laser-assisted electron-proton scattering. We have calculated total and angular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0963bcd31346111c11cd7c8d8a47439a
https://doi.org/10.1088/0953-4075/28/16/009
https://doi.org/10.1088/0953-4075/28/16/009
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 28:3391-3402
The R-matrix method has been applied to study the scattering of low-energy electrons by molecular oxygen in the 2 Pi g scattering symmetry. The non-adiabatic approach has been adopted to obtain cross sections corresponding to purely elastic scatterin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea0d82d4cd43967e75204eb1a76b573c
https://doi.org/10.1088/0953-4075/28/15/025
https://doi.org/10.1088/0953-4075/28/15/025
Publikováno v:
Physical Review A. 52:1310-1318
We present results of calculations for {ital e}{sup {minus}}+H{sub 2}{sup +} scattering in the energy regime below the first excited state for resonance symmetries {Sigma} and {Pi}. We employ three distinct and independent methods: close-coupling lin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ee8ebda12cca20bea3142813517ad8f
https://doi.org/10.1103/physreva.52.1310
https://doi.org/10.1103/physreva.52.1310