Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Wragg, Jack"'
Autor:
Armstrong, Gregory S. J., Clarke, Daniel D. A., Benda, Jakub, Wragg, Jack, Brown, Andrew C., van der Hart, Hugo W.
Publikováno v:
Phys. Rev. A 103, 053123 (2021)
Through solution of the multielectron, semi-relativistic, time-dependent Schr\"{o}dinger equation, we show that angular streaking produces strongly spin-polarized electrons in a noble gas. The degree of spin polarization increases with the Keldysh pa
Externí odkaz:
http://arxiv.org/abs/2108.13123
Autor:
Wragg, Jack, Clarke, Daniel D. A., Armstrong, Gregory S. J., Brown, Andrew C., Ballance, Connor P., van der Hart, Hugo W.
We observe the generation of high harmonics in the plane perpendicular to the driving laser polarization and show that these are driven by the spin-orbit interaction. Using R-Matrix with time-dependence theory, we demonstrate that for certain initial
Externí odkaz:
http://arxiv.org/abs/2006.12375
Autor:
Wragg, Jack, Clarke, Daniel D. A., Armstrong, Gregory S. J., Brown, Andrew C., Ballance, Connor P., van der Hart, Hugo W.
We use R-Matrix with Time-dependence (RMT) theory, with spin-orbit effects included, to study krypton irradiated by two time-delayed XUV ultrashort pulses. The first pulse excites the atom to 4s$^{2}$4p$^{5}$5s. The second pulse then excites 4s4p$^{6
Externí odkaz:
http://arxiv.org/abs/1911.00390
Autor:
Brown, Andrew, Armstrong, Greg, Benda, Jakub, Clarke, Daniel D. A., Wragg, Jack, Hamilton, Kathryn R., Masin, Zdenek, Gorfinkiel, Jimena D., van der Hart, Hugo
RMT is a program which solves the time-dependent Schrodinger equation for general, multielectron atoms, ions and molecules interacting with laser light. As such it can be used to model ionization (single-photon, multi-photon and strong-field), recoll
Externí odkaz:
http://arxiv.org/abs/1905.06156
Autor:
Wragg, Jack
In this thesis, we have described an extension to R-Matrix with Time Dependence (RMT) theory and associated codes that allows full modelling of ultrafast double ionisation processes. This approach extends the capability of R-Matrix methods to model i
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709862
Autor:
Wragg, Jack, van der Hart, Hugo W.
Publikováno v:
Phys. Rev. A 94, 032706 (2016)
R-matrix with time-dependence theory is applied to electron-impact ionisation processes for He in the S-wave model. Cross sections for electron-impact excitation, ionisation and ionisation with excitation for impact energies between 25 and 225 eV are
Externí odkaz:
http://arxiv.org/abs/1607.06723
Publikováno v:
Phys. Rev. A 92, 022504 (2015)
We have developed a two-electron outer region for use within R-matrix theory to describe double ionisation processes. The capability of this method is demonstrated for single-photon double ionisation of He in the photon energy region between 80 eV to
Externí odkaz:
http://arxiv.org/abs/1507.00893
Spectra of circularly polarized harmonics is calculated by numerically solving the Time-Dependent Schr\"{o}dinger Equation for a 2D model of Ne atom using circularly polarized fundamental with counter-rotating second harmonic laser fields. We demonst
Externí odkaz:
http://arxiv.org/abs/1504.06578
Publikováno v:
In Computer Physics Communications September 2020 254
Autor:
Brown, Andrew C., Armstrong, Gregory S.J., Benda, Jakub, Clarke, Daniel D.A., Wragg, Jack, Hamilton, Kathryn R., Mašín, Zdeněk, Gorfinkiel, Jimena D., van der Hart, Hugo W.
Publikováno v:
In Computer Physics Communications May 2020 250