Results 71 to 80 of about 5,298 (198)

photoionization

open access: yes, 2014
Citation: 'photoionization' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04620 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Probing skin photoallergens in reconstructed human epidermis: An EPR spin trapping investigation

open access: yesPhotochemistry and Photobiology, Volume 101, Issue 2, Page 275-281, March/April 2025.
We present an original proof‐of‐concept methodology to probe radical generation from allergens in contact with photoexposed skin, using electron paramagnetic resonance and spin trapping in a reconstructed human epidermis model mimicking real‐life exposure scenarios.
Yannick Port‐Lougarre   +3 more
wiley   +1 more source

The Turbulence Properties of 150‐km Echoes in the Lower Ionosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The valley region ionosphere spans from approximately 120–200 km in altitude, and hosts a wide range of plasma, neutral, and solar interactions that create and maintain the ionosphere. In this region a ubiquitous and mysterious source of radar echoes called “150‐km echoes” has been observed since the 1960s.
William J. Longley   +3 more
wiley   +1 more source

Benchmarking Current Capabilities for the Generation of Excitation and Photoionisation Atomic Data

open access: yesGalaxies, 2018
The spectra currently emerging from modern ground- and space-based astronomical instruments are of exceptionally high quality and resolution. To meaningfully analyse these spectra, researchers utilise complex modelling codes to replicate the observations.
Catherine Ramsbottom   +6 more
doaj   +1 more source

Probing the Influence of Sulfur–Aromatic Interactions on the Electronic Structure of Gas‐Phase Peptides

open access: yesChemistry – A European Journal, Volume 32, Issue 23, 16 June 2026.
Just as fingerprints reveal identity, spectroscopic fingerprints reveal molecular secrets. In this article, we show parts of the unique fingerprint of the sulfur–aromatic interaction. By measuring how this force alters the electronic structure of gas‐phase peptides, we provide a fundamental understanding of interactions that give insights into the ...
Laura Pille   +12 more
wiley   +1 more source

Green Emissions of Atomic Oxygen at Sprite Tops Explained

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Green emissions from excited Oxygen in Sprite Tops (GhOSTs) are due to the 557 nm photons emitted from atomic oxygen (O) $(\mathrm{O})$ excited to the 1S state. In this work we compare the possible contribution of various mechanisms for excitation of O(S1) $\mathrm{O}({}^{1}S)$ under application of a lightning‐induced electric field to the ...
Brandon Smith   +2 more
wiley   +1 more source

Structure–Reactivity Relationship of β‐O‐4 Linkers in Lignin Model Compound Catalytic Pyrolysis

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 6, June 2026.
Acid‐catalyzed pyrolysis of lignin model dimers reveals that retro‐ene and Maccoll elimination pathways compete with dehydration reactions, depending on the substituent at the β‐O‐4 linkage. We unveil these reaction mechanisms utilizing photoionization mass spectrometry with VUV synchrotron radiation.
Max Jueckstock   +10 more
wiley   +1 more source

Advances and Current Progress of Dopant Engineering on All‐Inorganic Halide Perovskites Toward High‐Performance Scintillating Materials

open access: yesMetalMat, Volume 3, Issue 2, June 2026.
This review provides the latest advancement on lead‐free all‐inorganic perovskites, covering fundamental aspects, emerging synthetic routes, and scintillation properties. We highlight the dopant engineering strategy to favor the formation and efficient radiative recombination of self‐trapped excitons and the future development direction for the next ...
Galfin Anderias Adu   +6 more
wiley   +1 more source

The photoionization of Nitrogen and Oxygen molecules in intense field

open access: yes四川大学学报. 自然科学版, 2017
In this work, the experimental techniques of supersonic molecular beam, femtosecond laser and time-of-flight (TOF) mass spectrometry were applied to investigate the photoionizations of nitrogen and oxygen molecules under intense femtosecond laser field ...
ZHANG Ke   +3 more
doaj  

Exploratory XPS Evidence for Ca–N Environments at the Organic–Mineral Interface in Bone

open access: yesSurface and Interface Analysis, Volume 58, Issue 6, Page 369-374, June 2026.
ABSTRACT Bone derives its remarkable mechanical properties from the nanoscale relationship between its organic matrix and mineral components. While interfacial interactions are known to affect bone mechanics, direct evidence of chemical bonding at this interface has been lacking.
Richard Leslie Abel   +3 more
wiley   +1 more source

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