Results 41 to 50 of about 20,014 (223)

High-precision spectroscopy of ultracold molecules in an optical lattice

open access: yesNew Journal of Physics, 2015
The study of ultracold molecules tightly trapped in an optical lattice can expand the frontier of precision measurement and spectroscopy, and provide a deeper insight into molecular and fundamental physics.
B H McGuyer   +6 more
doaj   +1 more source

Kinetic Study on the Reactions of Hydroxyl Radical with 1‐butene, Isobutene, and Trimethylpentene: Temperature and Pressure Dependence

open access: yesInternational Journal of Chemical Kinetics, EarlyView.
ABSTRACT The temperature dependence of the reaction rate coefficients (k) for the reactions of hydroxyl radical with three alkenes was measured by using laser‐induced fluorescence techniques in the temperature range of 298–750 K. The negative temperature dependence of k was observed for each reaction in the low‐pressure range.
Ryota Fushimi, Tatsuo Oguchi
wiley   +1 more source

State-resolved UV Photodissociation of OH: High-lying Excited States, Shape Resonances, and Thermal Cross Sections

open access: yesThe Astrophysical Journal
The hydroxyl radical (OH) is a key intermediate in oxygen chemistry and one of the primary tracers of ultraviolet (UV)-driven molecular processing in astrophysical environments, including photodissociation regions, protoplanetary disks, and planetary ...
Yu Kun Yang   +12 more
doaj   +1 more source

TD-DFT Insight into Photodissociation of Co-C Bond in Coenzyme B12

open access: yesFrontiers in Chemistry, 2014
Coenzyme B12 (AdoCbl) is one of the most biologically active forms of vitamin B12, and continues to be a topic of active research interest. The mechanism of Co-C bond cleavage in AdoCbl, and the corresponding enzymatic reactions are however, not well ...
Pawel Michal Kozlowski   +4 more
doaj   +1 more source

The effects of nitric oxide cooling and the photodissociation of molecular oxygen on the thermosphere/ionosphere system over the Argentine Islands [PDF]

open access: yesAnnales Geophysicae, 1997
In the past the global, fully coupled, time-dependent mathematical model of the Earth's thermosphere/ionosphere/plasmasphere (CTIP) has been unable to reproduce accurately observed values of the maximum plasma frequency, foF2, at extreme geophysical ...
G. D. Wells   +4 more
doaj   +1 more source

Photodissociation dynamics of HCOOH(Ã)

open access: yesChemical Physics Letters, 1988
The technique of Doppler-resolved, polarised LIF spectroscopy has been employed in a study of the energy and momenta disposal in the OH fragments generated via photodissociation of HCOOH (A 1A″) at 225 nm. The majority of the excess energy resides in fragment translation (≈ 78%) and internal excitation of the HCO fragment (≈ 12%).
Brouard, M, Omahony, J
openaire   +2 more sources

Photodissociation dynamics of bromoiodomethane from the first and second absorption bands. A combined velocity map and slice imaging study

open access: yes, 2018
Ion imaging is applied to disentangle the selective bond cleavage in the photodissociation of bromoiodomethane from the two first absorption bands.
Marggi Poullaín, Sonia   +11 more
core   +1 more source

Ion Activation Methods for Top‐Down Proteomics

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Mass spectrometry (MS) has emerged as a premier method used to characterize the sequences of proteins. Top‐down proteomics aims to capture the multiple sources of structural diversity reflected in proteins, such as those that arise from alternative RNA splicing events or the addition of post‐translational modifications. Tandem MS (i.e., MS/MS)
Jada N. Walker, Jennifer S. Brodbelt
wiley   +1 more source

Photodissociation dynamics of chloroethylenes at 193 nanometers.

open access: yes, 1995
Photodissociation dynamics of chloroethylenes at 193 ...
Guoxin. He (7976276)
core   +3 more sources

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

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   +1 more source

Home - About - Disclaimer - Privacy