Zobrazeno 1 - 10
of 61
pro vyhledávání: '"van der Hart, Hugo"'
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, 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
Autor:
Ding, Thomas, Ott, Christian, Kaldun, Andreas, Blättermann, Alexander, Meyer, Kristina, Stooß, Veit, Rebholz, Marc, Birk, Paul, Hartmann, Maximilian, Brown, Andrew, Van Der Hart, Hugo, Pfeifer, Thomas
Non-collinear four-wave mixing (FWM) techniques at near-infrared (NIR), visible, and ultraviolet frequencies have been widely used to map vibrational and electronic couplings, typically in complex molecules. However, correlations between spatially lo
Externí odkaz:
http://arxiv.org/abs/1510.08698
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
Publikováno v:
Phys. Rev. A 88, 023424 (2013)
We employ the time-dependent R-Matrix (TDRM) method to calculate anisotropy parameters for positive and negative sidebands of selected harmonics generated by two-color two-photon above threshold ionization of argon. We consider odd harmonics of an 80
Externí odkaz:
http://arxiv.org/abs/1310.6190
Autor:
Brown, A. C., van der Hart, Hugo W.
We investigate harmonic generation (HG) from ground-state Ar+ aligned with M=1 at a laser wavelength of 390-nm and intensity of 4x10(14) Wcm-2. Using time-dependent R-matrix theory, we find that an initial state with magnetic quantum number M=1 provi
Externí odkaz:
http://arxiv.org/abs/1309.1384