4.8 Article

Time-Resolved X-ray Photoelectron Spectroscopy: Ultrafast Dynamics in CS2 Probed at the S 2p Edge

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Physics, Multidisciplinary

Photon energy-resolved velocity map imaging from spectral domain ghost imaging

Jun Wang et al.

Summary: We propose a method that combines photon spectrum correlation analysis with the reconstruction of three-dimensional momentum distribution from velocity map images in a single, efficient step. We demonstrate its effectiveness through the photoionization results of the 2p-shell of argon using the Free-electron LASer in Hamburg. Despite the large average bandwidth of the ionizing pulses from the FEL, we are able to resolve distinct spectral features caused by the spin-orbit splitting of Ar+(2p(-1)). Our approach surpasses conventional analysis methods and will be valuable for velocity map imaging experiments with FEL sources. The retrieved linewidth of the binding energy spectrum approaches the resolution limitation set by the spectrometers used to collect the data. Our approach provides a path to extend high-dimensional spectral-domain ghost imaging.

NEW JOURNAL OF PHYSICS (2023)

Article Physics, Multidisciplinary

FLASH and the FLASH2020+project-current status and upgrades for the free-electron laser in Hamburg at DESY

Martin Beye et al.

Summary: The free-electron laser in Hamburg, FLASH, is the first facility of its kind and has been continuously upgraded since 2005. The FLASH2020+ project is currently implementing external seeding at a superconducting accelerator facility, making it an ideal spectroscopy machine for ultrafast processes in the future.

EUROPEAN PHYSICAL JOURNAL PLUS (2023)

Article Multidisciplinary Sciences

Following excited-state chemical shifts in molecular ultrafast x-ray photoelectron spectroscopy

D. Mayer et al.

Summary: Tracking the charge flow in photoexcited molecules using time-resolved X-ray photoelectron spectroscopy allows for real-time observation of changes in charge density and reveals the dynamics of electron motion. This provides important insights into photophysical and photochemical processes and is a valuable tool for studying molecular dynamics.

NATURE COMMUNICATIONS (2022)

Article Chemistry, Multidisciplinary

A localized view on molecular dissociation via electron-ion partial covariance

Felix Allum et al.

Summary: Inner-shell photoelectron spectroscopy provides element-specific information about molecular structure by measuring core-electron binding energies, which are sensitive to the chemical environment. In this study, the authors used extreme-ultraviolet pulses to investigate the ultraviolet photodissociation of a chiral molecule. They employed electron-ion partial covariance imaging to isolate elusive features in the photoelectron spectrum and successfully disentangled the electron spectra of different atomic and molecular levels. This method allows for the study of structural and chemical changes from a specific spectroscopic site.

COMMUNICATIONS CHEMISTRY (2022)

Article Chemistry, Physical

Transient vibration and product formation of photoexcited CS2 measured by time-resolved x-ray scattering

Ian Gabalski et al.

Summary: We used time-resolved x-ray scattering to investigate internal motion and dissociation channels in photoexcited carbon disulfide. The results showed that photoexcitation led to oscillatory bending and stretching motion, followed by dissociation of atomic sulfur. The dissociation process exhibited different behaviors at different time intervals, with significant changes in vibrational frequency and partial dissociation of the C-S bond observed within the first 300 fs. The resolved dissociation time provided insights into the branching ratio and differences between the two dissociation channels.

JOURNAL OF CHEMICAL PHYSICS (2022)

Article Chemistry, Physical

Multichannel photodissociation dynamics in CS2 studied by ultrafast electron diffraction

Weronika O. Razmus et al.

Summary: The structural dynamics of photoexcited gas-phase carbon disulfide molecules were investigated using ultrafast electron diffraction, revealing the processes of optical excitation and molecular dissociation, as well as the energy level transitions and fragment generation between different electronic systems.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

Article Chemistry, Physical

Time-resolved photoelectron spectroscopy: the continuing evolution of a mature technique

Michael S. Schuurman et al.

Summary: Time-resolved photoelectron spectroscopy (TRPES) is a widely used technique for probing nonadiabatic dynamics in molecules, with ab initio approaches enabling the interpretation of these spectra. Current developments include pushing femtosecond pulses into vacuum ultraviolet and soft X-ray regimes, as well as using novel polarizations for time-resolved optical activity as a probe of nonadiabatic dynamics. Future areas of application for this technique include new prospects in the field.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

Article Chemistry, Physical

Time resolved detection of the S(1D) product of the UV induced dissociation of CS2

Emily M. Warne et al.

Summary: The photoelectron spectroscopy experiment investigates the products formed after the photodissociation of UV-excited CS2 using femtosecond XUV photons. The spectral analysis reveals separate photoelectron bands corresponding to different dissociation channels, with no delay in the appearance of the S(D-1) product. Analysis of the photoelectron yield provides insights into the branching ratio and rate constants associated with dissociation and intersystem crossing.

JOURNAL OF CHEMICAL PHYSICS (2021)

Article Physics, Atomic, Molecular & Chemical

Photodissociation dynamics of CS2 near 204 nm: The S(3PJ)+CS(X1σ+) channels

Min Zhao et al.

Summary: In this study, photodissociation dynamics of CS2 in the ultraviolet region were investigated using the time-sliced velocity map ion imaging technique, revealing S(P-3(J))+CS(X-1 sigma(+)) product channels. Anisotropic parameters and total kinetic energy releases of the products were derived, indicating a nonadiabatic process in the ultraviolet photodissociation of CS2.

CHINESE JOURNAL OF CHEMICAL PHYSICS (2021)

Article Chemistry, Physical

Ultrafast Extreme Ultraviolet Photoelectron Spectroscopy of Nonadiabatic Photodissociation of CS2 from 1B2 (1Σu+) State: Product Formation via an Intermediate Electronic State

Shutaro Karashima et al.

Summary: The nonadiabatic dissociation of CS2 from the B-1(2) state was studied using ultrafast extreme ultraviolet photoelectron spectroscopy. The results revealed vibrational wave packet motion, electronic decay, and dissociation into S and CS fragments. Singlet and triplet dissociation occur via intermediate electronic state(s) produced by electronic relaxation from the B-1(2) state.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

Article Chemistry, Physical

Unmasking the cis-Stilbene Phantom State via Vacuum Ultraviolet Time-Resolved Photoelectron Spectroscopy and Ab Initio Multiple Spawning

Monika Williams et al.

Summary: This study presents the first vacuum ultraviolet time-resolved photoelectron spectroscopy (VUV-TRPES) investigation of photoisomerization dynamics in the paradigmatic molecule cis-stilbene. By combining VUV-TRPES with ab initio multiple spawning (AIMS) nonadiabatic dynamics simulations, direct spectral signatures of the phantom state in isolated cis-stilbene were observed and characterized. The study tracked the complete excited-state dynamics via multiple photoionization channels, from initial excitation to the electronic decay to the ground state, revealing the unique spectral signatures and time-dependent dynamics of the phantom-state intermediate.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

Article Chemistry, Physical

Vacuum Ultraviolet Excited State Dynamics of the Smallest Ketone: Acetone

Ruaridh Forbes et al.

Summary: The study combined tunable vacuum-ultraviolet time-resolved photoelectron spectroscopy (VUV-TRPES) with high-level quantum dynamics simulations to investigate multistate Rydberg-valence dynamics in acetone. Through simulation of the photoelectron spectra, unambiguous assignment of all involved Rydberg states was achieved, with the detection of the A(2)(n pi*) state for the first time. Dynamics modeling rationalized the temporal behavior of all photoelectron transients, proposing a mechanism for VUV-excited dynamics in acetone with a key role assigned to the A(2)(n pi*) state.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

Article Chemistry, Physical

Time-resolved pump-probe spectroscopy with spectral domain ghost imaging

Siqi Li et al.

Summary: In this study, spectral ghost imaging is applied to a pump-probe time-resolved experiment at an XFEL facility, demonstrating that it can simplify the interpretation of measurements by separating the overlapping contributions of pump and probe pulses in the photoelectron spectrum.

FARADAY DISCUSSIONS (2021)

Article Optics

Time-resolved site-selective imaging of predissociation and charge transfer dynamics: the CH3I B-band

Ruaridh Forbes et al.

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS (2020)

Article Physics, Multidisciplinary

Mapping the Complete Reaction Path of a Complex Photochemical Reaction

Adam D. Smith et al.

PHYSICAL REVIEW LETTERS (2018)

Article Physics, Multidisciplinary

Jitter-correction for IR/UV-XUV pump-probe experiments at the FLASH free-electron laser

Evgeny Savelyev et al.

NEW JOURNAL OF PHYSICS (2017)

Article Multidisciplinary Sciences

The Multielectron Ionization Dynamics Underlying Attosecond Strong-Field Spectroscopies

Andrey E. Boguslavskiy et al.

SCIENCE (2012)

Article Physics, Multidisciplinary

Time-resolved imaging of purely valence-electron dynamics during a chemical reaction

Paul Hockett et al.

NATURE PHYSICS (2011)

Article Physics, Multidisciplinary

Electron Bunch Timing with Femtosecond Precision in a Superconducting Free-Electron Laser

F. Loehl et al.

PHYSICAL REVIEW LETTERS (2010)

Article Multidisciplinary Sciences

Time-Resolved Molecular Frame Dynamics of Fixed-in-Space CS2 Molecules

Christer Z. Bisgaard et al.

SCIENCE (2009)

Article Chemistry, Physical

1B2(1Σu+) excited state decay dynamics in CS2

Dave Townsend et al.

JOURNAL OF CHEMICAL PHYSICS (2006)

Review Chemistry, Multidisciplinary

Femtosecond time-resolved photoelectron spectroscopy

A Stolow et al.

CHEMICAL REVIEWS (2004)

Review Chemistry, Physical

Ab initio multiple spawning:: Photochemistry from first principles quantum molecular dynamics

M Ben-Nun et al.

JOURNAL OF PHYSICAL CHEMISTRY A (2000)