Results 21 to 30 of about 5,298 (198)
New Journal of Physics, 2015 Femtosecond vacuum ultraviolet pulses from a monochromated high harmonic generation source excite vibrational wavepackets in the ${B}^{1}{{\rm{\Sigma }}}_{{\rm{g}}}^{+}$ state of D _2 .
A R Bainbridge +6 more
doaj +1 more source
Measuring the photoelectron emission delay in the molecular frame
Nature Communications, 2021 Measuring photoionization time delays is an interesting and challenging topic. Here the authors demonstrate a method to measure the photoionization time delays using inner-shell ionization of CO molecule.
Jonas Rist +24 more
doaj +1 more source
Atoms, 2022 Approximation methods are unavoidable in solving a many-electron problem. One of the most successful approximations is the random-phase approximation (RPA). Miron Amusia showed that it can be used successfully to describe atomic photoionization processes
Pranawa C. Deshmukh, Steven T. Manson
doaj +1 more source
Sensors, 2021 Atmospheric photoionization is a widely applied soft ionization mechanism in gas sensing devices for the detection of volatile organic compounds in ambient air. Photoionization is typically induced by low-pressure Vacuum Ultraviolet (VUV) lamps with MgF2
Adelaide Miranda, Pieter A. A. De Beule
doaj +1 more source
Photoionization and dissociative photoionization of propynal in the gas phase: theory and experiment [PDF]
Physical Chemistry Chemical Physics, 2019 Propynal (HCCCHO) is a compound of considerable astrochemical interest and observed in several interstellar objects.
Imene Derbali +8 more
openaire +4 more sources
Nature Communications, 2022 Photoionization time delays provide insights on the interaction of photon with the electrons. Here the authors explore the role of the molecular potential to the attosecond time delays in the photoionization of CF4 molecule.
H. Ahmadi +11 more
doaj +1 more source
Photoionization Time Delays [PDF]
, 2015 The material presented in this chapter is based on important advances realized in “attophysics” which make feasible to follow the motion of electrons in atoms and molecules with attosecond-level time resolution. In this context, time-delays have been recently determined in the process of photoionization by extreme-ultra-violet (XUV) pulses and the ...
Dahlström, J M +4 more
openaire +2 more sources
π‐Radical Cascades to Peri‐Fused Triangulene Dimers
Angewandte Chemie, EarlyView.We demonstrate the potential of open‐shell molecular graphene fragments as synthons for constructing graphene nanostructures via π‐radical cascades. By identifying monoradical intermediates as key selectivity‐determining species and tuning steric effects in a triangulene precursor, we show that reactivity in a formally diradical system can be ...
Paula L. Widmer +10 more
wiley +2 more sources
Sensors, 2022 Because of its simplicity, reliability, and sensitivity, the drift tube ion mobility spectrometer (IMS) has been recognized as the equipment of choice for the on-site monitoring and identification of volatile organic compounds (VOCs).
Binwang Yang +5 more
doaj +1 more source
Photoionization in alkali lasers
Optics Express, 2011 We have calculated photoionization rates in alkali lasers. The photoionization of alkali atoms in the gain medium of alkali lasers can significantly degrade the laser performance by reducing the neutral alkali density and with it the gain. For a ten atmosphere Rb laser and a Cs exciplex laser, the photoionization induced alkali atom loss rates are ...
R J, Knize, B V, Zhdanov, M K, Shaffer
openaire +2 more sources