482 citations · 1.9k across the 46 of their papers we have counts for
8 papers · 1 filter
Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption
T. J. A. Wolf, R. H. Myhre, J. P. Cryan +21
Organic chromophores with heteroatoms possess an important excited state relaxation channel from an optically allowed ππ* to a dark nπ*state. We exploit the element and site specif…
Machine learning applied to single-shot x-ray diagnostics in an XFEL
A. Sanchez-Gonzalez, P. Micaelli, C. Olivier +39
X-ray free-electron lasers (XFELs) are the only sources currently able to produce bright few-fs pulses with tunable photon energies from 100 eV to more than 10 keV. Due to the stoc…
The attosecond regime of impulsive stimulated electronic Raman excitation
Matthew R. Ware, Philip H. Bucksbaum, James P. Cryan +1
We have calculated the resonant and nonresonant contributions to attosecond impulsive stimulated electronic Raman scattering (SERS) in regions of autoionizing transitions. Comparis…
Optimizing impulsive X-ray Raman scattering for population transfer in atomic systems
James P. Cryan, Matthew R. Ware, Daniel J. Haxton
Impulsive X-ray Raman excitations of Lithium, Neon, and Sodium are calculated using the Multiconfiguration Time-Dependent Hartree-Fock method. Using linearly polarized laser pulses…
Self-referenced coherent diffraction x-ray movie of Angstrom- and femtosecond-scale atomic motion
J. M. Glownia, A. Natan, J. P. Cryan +11
Time-resolved femtosecond x-ray diffraction patterns from laser-excited molecular iodine are used to create a movie of intramolecular motion with time and space resolution of …
Focal overlap gating in velocity map imaging to achieve high signal-to-noise ratio in photo-ion pump-probe experiments
Niranjan Shivaram, Elio G Champenois, James P Cryan +3
We demonstrate a new technique in velocity map imaging (VMI) that allows spatial gating of the laser focal overlap region in time resolved pump-probe experiments. This significantl…
Coherent control using kinetic energy and the geometric phase of a conical intersection
Chelsea Liekhus-Schmaltz, Gregory A. McCracken, Andreas Kaldun +2
Conical intersections (CI) between molecular potential energy surfaces with non-vanishing non-adiabatic couplings generally occur in any molecule consisting of at least three atoms…
Ultrafast Isomerization in Acetylene Dication: To Be or Not To Be
Zheng Li, Ludger Inhester, Chelsea Liekhus-Schmaltz +9
Experimental evidence has pointed toward the existence of ultrafast proton migration and isomerization as a key process for acetylene and its ions, however the actual mechanism for…