Results 21 to 30 of about 13,910 (212)

Breaking the Boring Billion

open access: yesGeophysical Monograph Series, Page 487-501., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Charles W. Diamond   +3 more
wiley  

+1 more source

Formation of a gate dielectric of nanometer thickness by rapid thermal treatment

open access: yesDoklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2021
Investigations of the thickness and optical characteristics of thin SiO2 films obtained by one-, two-, or three-stage rapid thermal processing (RTP) at atmospheric pressure, pulses of 6, 12, and 20 s duration have been carried out.
N. S. Kovalchuk   +4 more
doaj   +1 more source

An ion trap source of cold atomic hydrogen via photodissociation of the BaH+ molecular ion

open access: yesNew Journal of Physics, 2022
I present a novel scheme for producing cold (magnetically trappable) atomic hydrogen, based on threshold photodissociation of the BaH ^+ molecular ion.
S A Jones
doaj   +1 more source

C60IN PHOTODISSOCIATION REGIONS [PDF]

open access: yesThe Astrophysical Journal, 2014
Recent studies have confirmed the presence of buckminsterfullerene (C$_{60}$) in different interstellar and circumstellar environments. However, several aspects regarding C$_{60}$ in space are not well understood yet, such as the formation and excitation processes, and the connection between C$_{60}$ and other carbonaceous compounds in the interstellar
Pablo Castellanos   +5 more
openaire   +3 more sources

Real-Time Measurement of Photodissociation with a Static Modulated Fourier Transform Spectrometer

open access: yesApplied Sciences, 2022
A static modulated Fourier transform spectrometer composed of a modified Sagnac interferometer was implemented for real-time remote sensing of the spectral property changes in a solid dye.
Ju Yong Cho   +3 more
doaj   +1 more source

Vibrationally mediated photodissociation dynamics of pyrrole

open access: yesAIP Advances, 2019
We investigate photodissociation of vibrationally excited pyrrole molecules in a velocity map imaging experiment with IR excitation of N–H bond stretching vibration v1 = 1, νIR= 3532 cm−1, and UV photodissociation at λUV= 243 nm. In the IR+UV experiment,
Kateryna Grygoryeva   +5 more
doaj   +1 more source

Fabrication of Superhydrophobic Silicone Rubber with Periodic Micro/Nano-Suction Cup Structure by ArF Excimer Laser-Induced Photodissociation

open access: yesNanomaterials, 2019
A 193-nm ArF excimer laser was used to induce the photodissociation of Si–O bonds of silicone rubber in order to fabricate a periodic micro/nano-suction cup silicone structure, approximately 1 μm in diameter and 2 μm in height at regular intervals of 2.5
Masayuki Okoshi
doaj   +1 more source

Experimental Study of the Laser-Induced Oxyhemoglobin Photodissociation in Cutaneous Blood Vessels

open access: yesActa Medica Bulgarica, 2015
A new optical method for reduction of local tissue hypoxia is proposed. It is shown that this method of phototherapy allows the control of a local oxygen concentration in tissue.
Gisbrecht Alexander, Mamilov S.
doaj   +1 more source

Jitter-correction for IR/UV-XUV pump-probe experiments at the FLASH free-electron laser

open access: yesNew Journal of Physics, 2017
In pump-probe experiments employing a free-electron laser (FEL) in combination with a synchronized optical femtosecond laser, the arrival-time jitter between the FEL pulse and the optical laser pulse often severely limits the temporal resolution that can
Evgeny Savelyev   +35 more
doaj   +1 more source

Photodestruction of Diatomic Molecular Ions: Laboratory and Astrophysical Application

open access: yesMolecules, 2020
In this work, the processes of photodissociation of some diatomic molecular ions are investigated. The partial photodissociation cross-sections for the individual rovibrational states of the diatomic molecular ions, which involves alkali metals, as well ...
Vladimir A. Srećković   +2 more
doaj   +1 more source

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