Results 31 to 40 of about 16,298 (235)

Photodissociation Spectroscopy of [PDF]

open access: yesLaser Chemistry, 1994
The photodissociation spectrum of is obtained from the yields of fragment ion as a function of photodissociation wavelength in the 400–1400 nm region. Two bands at 440 and 580 nm are attributed to the C ← X and the B ← X local excitation (LE) bands, respectively.
Kazuhiko Ohashi   +3 more
openaire   +1 more source

UV Photodissociation of Pyrroles: Symmetry and Substituent Effects [PDF]

open access: yes, 2013
H (Rydberg) atom photofragment translational spectroscopy and ab initio electronic structure calculations are used to explore ways in which ring substituents affect the photofragmentation dynamics of gas phase pyrroles. S1
Marchetti, Barbara   +3 more
core   +1 more source

Atmospheric processes on ice nanoparticles in molecular beams

open access: yesFrontiers in Chemistry, 2014
This review summarizes some recent experiments with ice nanoparticles (large water clusters) in molecular beams and outlines their atmospheric relevance: (1) Investigation of mixed water–nitric acid particles by means of the electron ionization and ...
Michal eFárník, Viktoriya ePoterya
doaj   +1 more source

Exploring the energy disposal immediately after bond-breaking in solution:the wavelength-dependent excited state dissociation pathways of para-methylthiophenol [PDF]

open access: yes, 2013
A wavelength-resolved (λpump = 295, 285, 270, and 267 nm) photodissociation study of para-methylthiophenol (p-MePhSH) in ethanol solution has been performed using femtosecond transient absorption (TA) spectroscopy, and the results compared with those ...
Das, Saptaparna   +5 more
core   +1 more source

Preparing sulfur nanoparticles and determining their effect on the photodegradation of polycarbonates [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
This study involved the preparation of sulfur nanoparticles using the extract of Ziziphus-spina leaves and examined their effect on the photodegradation of polycarbonate membranes with a thickness of (60±5) microns, after adding various ...
rand hassan, Hameed Ali, Muthanaa Sirhan
doaj   +1 more source

Nonadiabatic photodissociation dynamics [PDF]

open access: yes, 2005
The photodissociation dynamics of the triatomic (or pseudo-triatomic) system in the nonadiabatic multiple electronic states is investigated by employing a time-dependent quantum wavepacket method, while the time propagation of the wave packet is carried ...
Han, KL   +5 more
core   +1 more source

Phase‐Resolved Dual Control of Phenol Photodissociation at the Air–Water Interface From Structure‐Resolved Statistics

open access: yesAdvanced Science, EarlyView.
Faster phenol photolysis at the air–water interface arises from two cooperative factors: a more favorable initial microenvironment for solvent‐side electron stabilization, which lowers CI access, and a more labile hydrogen‐bond network, which more readily reorganizes to stabilize the dark‐state intermediate.
Qiang Yin   +8 more
wiley   +1 more source

Measurement of the Photodissociation Coefficient of NO2 in the Atmosphere: II. Stratospheric Measurements [PDF]

open access: yes, 1985
The photodissociation coefficient of NO2, J NO 2, has been measured from a balloon platform in the stratosphere. Results from two balloon flights are reported.
Madronich, S.   +3 more
core  

Results from the Intergovernmental Panel on Climatic Change Photochemical Model Intercomparison (PhotoComp) [PDF]

open access: yes, 1997
Results from the Intergovernmental Panel on Climatic Change (IPCC) tropospheric photochemical model intercomparison (PhotoComp) are presented with a brief discussion of the factors that may contribute to differences in the modeled behaviors of HOx ...
Kuhn, Michael   +59 more
core   +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

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