Results 1 to 10 of about 45,564 (254)

Photodissociation of interstellar ArH+ [PDF]

open access: bronzeAstronomy & Astrophysics, 2014
Aims. Following the recent detection of 36ArH+ in the Crab nebula spectrum, we have computed the photodissociation rate of ArH+ in order to constrain the physical processes at work in this environment. Methods.
Alekseyev, A. B.   +2 more
core   +7 more sources

Electronic Structures and Photodetachment of TeO2, TeO3, and HTeO4 Anions: A Cryogenic Photoelectron Spectroscopic Study [PDF]

open access: yesMolecules
Cryogenic anion photoelectron spectroscopy combined with quantum chemical calculations was employed to investigate the electronic structures and photodetachment properties of TeO2−, TeO3−, and HTeO4− anions.
Fan Yang   +8 more
doaj   +2 more sources

A Thorough Understanding of Methylrhodium(III)–Porphyrin Photophysics: A DFT/TDDFT Study [PDF]

open access: yesMolecules
Rhodium–porphyrin complexes are characterised by their ability to activate C-H and C-C bonds and, therefore, find applications in synthesis and catalysis. Axial rhodoporphyrin ligands are susceptible to photodissociation under the influence of light. DFT
Piotr Lodowski, Maria Jaworska
doaj   +2 more sources

Direct observation of two-channel photodissociation of carbon monoxide from the hemoglobin subunits [PDF]

open access: yesNature Communications
Determining dynamics of bond breaking between carbon monoxide (CO) and heme proteins is essential to understand the interplay between protein function and dynamics, which is one of the fundamental challenges of physical biology.
Sergei V. Lepeshkevich   +7 more
doaj   +2 more sources

Photoionization and Photodissociation Rates across a Solar Cycle

open access: goldThe Planetary Science Journal
Unattenuated photoionization and photodissociation rate coefficients are calculated using solar spectral irradiance measurements across a continuous solar cycle spanning 2004–2014. These rates are organized by corresponding daily F _10.7 P indices, where
Luke Moore, Russell Mapaye
doaj   +2 more sources

Photodissociation-driven photoacoustic spectroscopy with UV-LEDs for ozone detection [PDF]

open access: yesPhotoacoustics
This study presents the development and evaluation of a UV-LED based photoacoustic (PA) measurement system for ozone (O3) detection to demonstrate its potential for low-cost and accurate sensing while for the first time addressing the importance of ...
Lukas Escher   +5 more
doaj   +2 more sources

Herschel spectral-mapping of the Helix Nebula (NGC 7293): Extended CO photodissociation and OH+ emission [PDF]

open access: green, 2014
The Helix Nebula (NGC 7293) is the closest planetary nebulae. Therefore, it is an ideal template for photochemical studies at small spatial scales in planetary nebulae. We aim to study the spatial distribution of the atomic and the molecular gas, and the
Barlow, M. J.   +15 more
core   +5 more sources

Real-space observation of the dissociation of a transition metal complex and its concurrent energy redistribution [PDF]

open access: yesNature Communications
Mechanistic insights into photodissociation dynamics of transition metal carbonyls, like Fe(CO)5, are fundamental for understanding active catalytic intermediates.
Aviad Schori   +25 more
doaj   +2 more sources

Photodissociation dynamics of N3+ [PDF]

open access: yesThe Journal of Chemical Physics, 2022
The photodissociation dynamics of N3+ excited from its (linear) 3Σg−/(bent) 3A″ ground to the first excited singlet and triplet states is investigated. Three-dimensional potential energy surfaces for the 1A′, 1A″, and 3A′ electronic states, correlating with the 1Δg and 3Πu states in linear geometry, for N3+ are constructed using high-level electronic ...
Sarbani Patra   +4 more
openaire   +5 more sources

Conformational-Dependent Photodissociation of Glycolic Acid in an Argon Matrix

open access: yesPhotochem, 2023
Ultraviolet-induced photodissociation and photo-isomerization of the three most stable conformers (SSC, GAC, and AAT) of glycolic acid are investigated in a low-temperature solid argon matrix using FTIR spectroscopy and employing laser radiation with ...
Jussi Ahokas   +6 more
doaj   +1 more source

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