Results 11 to 20 of about 1,364,580 (250)

ULTRAFAST DIFFRACTION AND SPECTROSCOPY STUDIES OF GAS-PHASE PHOTOCHEMISTRY [PDF]

open access: yes, 2023
The continuing progress of ultrafast sources such as X-ray free-electron lasers, high-repetition-rate near-infrared lasers, and Mega-electronvolt ultrafast electron diffraction facilities enable studies of electronic and structural dynamics in gas-phase ...
Rolles, Daniel
core   +1 more source

Proceedings of the Thirteenth International Conference on Time-Resolved Vibrational Spectroscopy [PDF]

open access: yes, 2007
The thirteenth meeting in a long-standing series of “Time-Resolved Vibrational Spectroscopy” (TRVS) conferences was held May 19th to 25th at the Kardinal Döpfner Haus in Freising, Germany, organized by the two Munich Universities - Ludwig-Maximilians ...
Zinth, Wolfgang   +2 more
core   +1 more source

Dynamic Microscopy Study of Ultrafast Charge Transfer in a Hybrid P3HT/Hyperbranched CdSe Nanoparticle Blend for Photovoltaics [PDF]

open access: yes, 2012
We present a spectroscopic investigation on a new hyperbranched cadmium selenide nanocrystals (CdSe NC)/poly(3-hexylthiophene) (P3HT) blend, a potentially good active component in hybrid photovoltaics. Combined ultrafast transient absorption spectroscopy
Polli, Dario   +20 more
core   +1 more source

Harmonium: An Ultrafast Vacuum Ultraviolet Facility

open access: yesCHIMIA, 2017
Harmonium is a vacuum ultraviolet (VUV) photon source built within the Lausanne Centre for Ultrafast Science (LACUS). Utilising high harmonic generation, photons from 20–110 eV are available to conduct steady-state or ultrafast photoelectron and
Christopher A. Arrell   +10 more
doaj   +1 more source

Recent advances in ultrafast optical parametric oscillator frequency combs [PDF]

open access: yes, 2014
We discuss recent advances in the stabilization and application of femtosecond frequency combs based on optical parametric oscillators (OPOs) pumped by femtosecond lasers at 800 and 1060 nm.
Reid, Derryck T.; id_orcid   +2 more
core   +1 more source

Toward time-resolved laser T-jump/X-ray probe spectroscopy in aqueous solutions

open access: yesStructural Dynamics, 2019
Most chemical and biochemical reactions in nature and in industrial processes are driven by thermal effects that bring the reactants above the energy barrier for reaction.
O. Cannelli   +9 more
doaj   +1 more source

Harmonium: A pulse preserving source of monochromatic extreme ultraviolet (30–110 eV) radiation for ultrafast photoelectron spectroscopy of liquids

open access: yesStructural Dynamics, 2016
A tuneable repetition rate extreme ultraviolet source (Harmonium) for time resolved photoelectron spectroscopy of liquids is presented. High harmonic generation produces 30–110 eV photons, with fluxes ranging from ∼2 × 1011 photons/s at 36 eV to ∼2 × 108
J. Ojeda   +8 more
doaj   +1 more source

Element- and enantiomer-selective visualization of molecular motion in real-time

open access: yesNature Communications, 2023
Complex molecules show element- and enantio-specific properties and reactivity. Here the authors demonstrate identification of the element- and enantiomer-selective motion of Ibuprofen molecule using X-ray photons at the carbon K-edge.
R. Mincigrucci   +23 more
doaj   +1 more source

Conical Intersection versus Avoided Crossing: Geometric Phase Effect in Molecular High-Order Harmonics

open access: yesUltrafast Science, 2023
Nonadiabatic dynamics around an avoided crossing or a conical intersection play a crucial role in the photoinduced processes of most polyatomic molecules.
Guanglu Yuan   +3 more
doaj   +1 more source

Ultrafast Spectroscopy With Frequency Combs: Enabling New Measurements Of Dilute Species In Molecular Beams [PDF]

open access: yes, 2022
Initially developed as a tool for metrology, frequency combs are most often used for precision, frequency-resolved spectroscopy. The utility of frequency combs in ultrafast spectroscopy is just beginning to be explored.
Reber, Melanie A.R.
core   +1 more source

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