Results 31 to 40 of about 21,113 (164)

Precision Measurements of Ionization and Dissociation Energies by Extrapolation of Rydberg Series: From H2 to Larger Molecules

open access: yesCHIMIA, 2013
Recent experiments are reviewed which have led to the determination of the ionization and dissociation energies of molecular hydrogen with a precision of 0.0007 cm–1 (8 mJ/mol or 20 MHz) using a procedure based on high-resolution spectroscopic ...
D. Sprecher, M. Beyer, F. Merkt
doaj   +1 more source

Imaging the Breakdown of Molecular-Frame Dynamics through Rotational Uncoupling

open access: yes, 2017
We demonstrate the breakdown of molecular-frame dynamics induced by the uncoupling of molecular rotation from electronic motion in molecular Rydberg states. We observe this non-Born-Oppenheimer regime in the time domain through photoelectron imaging of a
Bucksbaum, Philip H.   +2 more
core   +1 more source

Autoionizing doubly-excited states of 3Σg− symmetry of H2

open access: yesEPJ Web of Conferences, 2015
We report R-matrix calculations of doubly-excited 3Σg− states of molecular hydrogen corresponding to 3d̃πnℓ̃π configurations. These states form Rydberg series converging to the 3d̃π series limit.
Argoubi F., Telmini M., Jungen Ch.
doaj   +1 more source

Single- and Double-electron Capture Cross Sections for O6+ Ion in Collisions with H2 Molecules

open access: yesThe Astrophysical Journal, 2023
Single- and double-electron capture (SEC and DEC) processes occurring in O ^6+ and H _2 collisions are investigated in a wide-energy domain ranging from 0.1 to 100 keV u ^−1 .
J. W. Gao, Y. Y. Qi, Y. Wu, J. G. Wang
doaj   +1 more source

Femtosecond real-time probing of reactions. XIV. Rydberg states of methyl iodide [PDF]

open access: yes, 1994
The elementary reaction dynamics of methyl iodide in two Rydberg states leading to an iodine and a methyl radical occur on the femtosecond time scale (M.H. Janssen, M. Dantus, H. Guo, and A.H. Zewail. Chem. Phys. Lett. 214, 281 (1993)).
Guo, Hua, Zewail, Ahmed H.
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

ab initio R-matrix and MQDT investigation of low-lying Rydberg states of the HeH+ molecular ion

open access: yesEPJ Web of Conferences, 2015
We report R-matrix calculations of low-lying Rydberg states of the hydrohelium molecular ion HeH+ corresponding to 1Δ and 3Δ symmetry. The calculations include states with principal quantum numbers 3 ≤ n ≤ 10.
Bouhali I.   +3 more
doaj   +1 more source

Advancing Energy Materials by In Situ Atomic Scale Methods

open access: yesAdvanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss   +21 more
wiley   +1 more source

Time-Resolved Chiral X-Ray Photoelectron Spectroscopy with Transiently Enhanced Atomic Site Selectivity: A Free-Electron Laser Investigation of Electronically Excited Fenchone Enantiomers

open access: yesPhysical Review X, 2023
Chirality is widespread in nature, playing a fundamental role in biochemical processes and in the origin of life itself. The observation of dynamics in chiral molecules is crucial for the understanding and control of the chiral activity of photoexcited ...
D. Faccialà   +30 more
doaj   +1 more source

Rydberg atom mediated non-destructive readout of collective rotational states in polar molecule arrays

open access: yes, 2016
We analyze in detail the possibility to use charge-dipole interaction between a single polar molecule or a 1D molecular array and a single Rydberg atom to read out rotational populations.
Kuznetsova, Elena   +3 more
core   +1 more source

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