Zobrazeno 1 - 10
of 95
pro vyhledávání: '"L. Malegat"'
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 40:F51-F61
Fully integrated double photoionization cross sections for He are obtained on a fine energy mesh in the threshold region from ab initio calculations using the hyperspherical -matrix with a semiclassical outgoing waves method. These data are shown to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86ca61d0ef79a5f14710b36a90065fd6
https://doi.org/10.1088/0953-4075/40/4/f02
https://doi.org/10.1088/0953-4075/40/4/f02
Autor:
P Selles, T J Reddish, D. P. Seccombe, L. Malegat, A Huetz, S. A. Collins, Andrey K. Kazansky
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 35:3767-3780
The mutual angular distributions of the two ejected electrons following direct photodouble ionization have been measured for D2 at an excess energy (E) of 25 eV using linearly polarized light. These (γ ,2 e) ‘t riple’ differential cross sections
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a9be2dce8bf8d2e60e83ebf3e944ec0
https://doi.org/10.1088/0953-4075/35/17/312
https://doi.org/10.1088/0953-4075/35/17/312
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 35:1657-1669
We demonstrate that it is possible to perform configuration interaction calculations for complex atoms while avoiding any numerical calculation of the matrix elements. This opportunity is offered by the description of all electrons on a unique radial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f12b0f4c7c95a31539ef7642ecd371e2
https://doi.org/10.1088/0953-4075/35/7/304
https://doi.org/10.1088/0953-4075/35/7/304
Publikováno v:
Physical Review Letters. 85:4450-4453
The hyperspherical R-matrix method with semiclassical outgoing waves introduced by us previously [Phys. Rev. A 60, 3667 (1999)] is applied to the one-photon double ionization of the He atom. The absolute differential cross sections obtained are in ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29b7b2ec64e42b4294fce694a8131e0d
https://doi.org/10.1103/physrevlett.85.4450
https://doi.org/10.1103/physrevlett.85.4450
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 33:2409-2418
We present a comparative ab initio study of the direct double photoionization process in Ca and He. Strong similarities are found, but core effects become observable as the energy increases, leading to more correlated patterns in Ca than in He, as we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61f2a7ef481baa008b588decb62468b6
https://doi.org/10.1088/0953-4075/33/13/303
https://doi.org/10.1088/0953-4075/33/13/303
Publikováno v:
Physical Review A. 60:3667-3676
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aa2205342394055ff5f6860e59f8150
https://doi.org/10.1103/physreva.60.3667
https://doi.org/10.1103/physreva.60.3667
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 32:4667-4675
We revisit the well known extended Wannier ridge model (EWRM) by comparing its results with those of the novel ab initio hyperspherical -matrix approach with semiclassical outgoing waves for the double photoionization of helium. We establish that acc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b13e8eee1a10d3e15829e31edc3a4de9
https://doi.org/10.1088/0953-4075/32/19/307
https://doi.org/10.1088/0953-4075/32/19/307
Publikováno v:
Le Journal de Physique IV. :Pr6-85
We introduce a new method for computing photo double ionization (PDI) cross sections for two electron atoms. It is formulated in terms of the hyperspherical radius R and relies upon a combination of R matrix techniques in the inner region R≤R0 with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65fb66fc29b28a379f5ea93f0d1c4e84
https://doi.org/10.1051/jp4:1999619
https://doi.org/10.1051/jp4:1999619
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 31:L353-L360
We present measurements and calculations of triple differential cross sections (TDCSs) for indirect double photoionization of xenon due to inner-shell ionization and Auger decay. The interference effects, which occur when the energies of the photoele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2f6bcef8e22138ff1a51f6948a90483
https://doi.org/10.1088/0953-4075/31/8/005
https://doi.org/10.1088/0953-4075/31/8/005
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 30:L293-L299
Experiments where the energies and angles of the two emitted electrons are resolved have been performed for double photoionization of argon in the valence shells. So far such experiments were always restricted to the final states of doubly charged ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61f3f0dd69b78a06c6c27e83391c0811
https://doi.org/10.1088/0953-4075/30/9/002
https://doi.org/10.1088/0953-4075/30/9/002