S. Patchkovskii
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View article: Statistical theory of cumulant mapping in an imperfect apparatus
Statistical theory of cumulant mapping in an imperfect apparatus Open
Cumulant mapping has recently been suggested [Frasinski, ] as an efficient approach to observing multiparticle fragmentation pathways while bypassing the restrictions of the usual coincidence-measurement approach. We present a formal analy…
View article: Statistical theory of cumulant mapping in an imperfect apparatus
Statistical theory of cumulant mapping in an imperfect apparatus Open
Cumulant mapping has been recently suggested [Frasinski, Phys. Chem. Chem. Phys. 24, 207767 (2022)] as an efficient approach to observing multi-particle fragmentation pathways, while bypassing the restrictions of the usual coincidence-meas…
View article: Anisotropy parameters for two-color photoionization phases in randomly oriented molecules: theory and experiment in methane and deuteromethane
Anisotropy parameters for two-color photoionization phases in randomly oriented molecules: theory and experiment in methane and deuteromethane Open
We present a combined theoretical and experimental work investigating the angle-resolved phases of the photoionization process driven by a two-color field consisting of an attosecond pulse train and an infrared pulse in an ensemble of rand…
View article: Role of Spin-Orbit Coupling in High-Order Harmonic Generation Revealed by Supercycle Rydberg Trajectories
Role of Spin-Orbit Coupling in High-Order Harmonic Generation Revealed by Supercycle Rydberg Trajectories Open
High-harmonic generation is typically thought of as a sub-laser-cycle process, with the electron's excursion in the continuum lasting a fraction of the optical cycle. However, it was recently suggested that long-lived Rydberg states can pl…
View article: Dissecting Strong-Field Excitation Dynamics with Atomic-Momentum Spectroscopy
Dissecting Strong-Field Excitation Dynamics with Atomic-Momentum Spectroscopy Open
Observation of internal quantum dynamics relies on correlations between the system being observed and the measurement apparatus. We propose using the c.m. degrees of freedom of atoms and molecules as a "built-in" monitoring device for obse…
View article: Robust transverse structures in rescattered photoelectron wavepackets and their consequences
Robust transverse structures in rescattered photoelectron wavepackets and their consequences Open
Synopsis Initial-state symmetry has been under-appreciated in strong-field spectroscopies, where laser fields dominate the dynamics. We demonstrate numerically that the transverse photoelectron phase structure, arising from the initial-sta…
View article: Orientation-dependent stereo Wigner time delay and electron localization in a small molecule
Orientation-dependent stereo Wigner time delay and electron localization in a small molecule Open
Time and place of electron exit Until about a decade ago, laser-induced ionization was considered instantaneous. Since then, applications of attosecond laser pulses have shown multiple subtle and complex factors that influence the precise …
View article: Control of attosecond light polarization in two-color bicircular fields
Control of attosecond light polarization in two-color bicircular fields Open
We develop theoretically and confirm both numerically and experimentally a\ncomprehensive analytical model which describes the propensity rules in the\nemission of circularly polarized high harmonics by systems driven by two-color\ncounter…
View article: Effects of nodal planes on strong-field ionization and high-order-harmonic generation in ring-type molecules
Effects of nodal planes on strong-field ionization and high-order-harmonic generation in ring-type molecules Open
We measure the ellipticity dependence of high-harmonic generation (HHG) from unaligned gas-phase ensembles of the five-membered ring molecules 2,3-dihydrofuran (${\mathrm{C}}_{4}{\mathrm{H}}_{6}\mathrm{O}$), furan (${\mathrm{C}}_{4}{\mathr…
View article: iSURF: a family of infinite-time surface flux methods
iSURF: a family of infinite-time surface flux methods Open
The computation and analysis of photoelectron spectra (PES) is a fundamental technique in atomic and molecular physics to study the structural and dynamical properties of a target system, and to gain insight into the process of its ionizat…
View article: Communication: XUV transient absorption spectroscopy of iodomethane and iodobenzene photodissociation
Communication: XUV transient absorption spectroscopy of iodomethane and iodobenzene photodissociation Open
Time-resolved extreme ultraviolet (XUV) transient absorption spectroscopy of iodomethane and iodobenzene photodissociation at the iodine pre-N4,5 edge is presented, using femtosecond UV pump pulses and XUV probe pulses from high harmonic g…