Výsledky vyhledávání - "Clarke, D. D."

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Electron correlation and short-range dynamics in attosecond angular streaking

Autor: Armstrong, G. S. J., Clarke, D. D. A., Benda, J., Brown, A. C., van der Hart, H. W.

We employ the R-matrix with time-dependence method to study attosecond angular streaking of F$^-$. Using this negative ion, free of long-range Coulomb interactions, we elucidate the role of short-range electron correlation effects in an attoclock sch

Externí odkaz: http://arxiv.org/abs/2003.12409

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Modeling tomographic measurements of photoelectron vortices in counter-rotating circularly polarized laser pulses

Autor: Armstrong, G. S. J., Clarke, D. D. A., Benda, J., Wragg, J., Brown, A. C., van der Hart, H. W.

Publikováno v: Phys. Rev. A 100 063416 (2019)

Recent experiments [D. Pengel, S. Kerbstadt, L. Englert, T. Bayer, and M. Wollenhaupt, \href{https://journals.aps.org/pra/abstract/10.1103/PhysRevA.96.043426}{{\PRA} {\bf 96} 043426 (2017)}] have measured the photoelectron momentum distribution for t

Externí odkaz: http://arxiv.org/abs/1912.08133

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Electron rotational asymmetry in strong-field photodetachment from F$^-$ by circularly polarized laser pulses

Autor: Armstrong, G. S. J., Clarke, D. D. A., Brown, A. C., van der Hart, H. W.

Publikováno v: Phys. Rev. A 99 023429 (2019)

We use the $R$-matrix with time-dependence method to study detachment from F$^-$ in circularly-polarized laser fields of infrared wavelength. By decomposing the photoelectron momentum distribution into separate contributions from detached $2p_1$ and

Externí odkaz: http://arxiv.org/abs/1911.00290

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$R$-matrix with Time-dependence Theory for Ultrafast Atomic Processes in Arbitrary Light Fields

Autor: Clarke, D. D. A., Armstrong, G. S. J., Brown, A. C., van der Hart, H. W.

Publikováno v: Phys. Rev. A 98, 053442 (2018)

We describe an ab initio and non-perturbative $R$-matrix with time-dependence theory for ultrafast atomic processes in light fields of arbitrary polarization. The theory is applicable to complex, multielectron atoms and atomic ions subject to ultrash

Externí odkaz: http://arxiv.org/abs/1812.00234

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Extreme-ultraviolet-initiated High-harmonic Generation in Ar$^{+}$

Autor: Clarke, D. D. A., van der Hart, H. W., Brown, A. C.

We employ the R-matrix with time-dependence method to investigate extreme-ultraviolet-initiated high-harmonic generation (XIHHG) in Ar$^{+}$. Using a combination of extreme-ultraviolet (XUV, $92\textrm{ nm}$, $3\times 10^{12}\,\textrm{Wcm}^{-2}$) and

Externí odkaz: http://arxiv.org/abs/1802.03225

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