Results 211 to 220 of about 42,147 (261)
Some of the next articles are maybe not open access.
Primary Photochemical Processes in Solution
The Journal of Chemical Physics, 1937The effect of an inert solvent on the efficiency of photodissociation processes is discussed. It is shown on theoretical considerations that under the usual experimental conditions a close analogy between reactions in solution and in the gas phase cannot be accounted for by assuming a symmetrical retardation of both the dissociation and recombination ...
G. K. Rollefson, W. F. Libby
openaire +1 more source
Primary Photochemical Processes
1988Electromagnetic radiant energy interacts with atomic and molecular systems such that electronic and nuclear motions are affected. In all inelastic photon-molecule interactions radiant energy is converted into kinetic energy of electrons or nuclei. With such interactions the photon can be annihilated, a replica photon can be created, or it can emerge ...
openaire +1 more source
Primary Photochemical Processes in Water
The Journal of Physical Chemistry, 1996The primary photochemical processes which occur in neat water after 282 nm high-intensity excitation via a two-photon mechanism were studied. Using probe pulses in UV, visible, and near-IR spectral ranges, the absorption process itself and the time evolution of the generated electrons and other photoproducts in the 0.1−80 ps scale were investigated ...
A. Reuther +2 more
openaire +1 more source
Tropospheric Photochemical and Photophysical Processes
1976Our goal in this paper is to illustrate some areas where tunable lasers—IR, UV, and vacuum UV—might play a definitive role in achieving a significantly better understanding of the complex chemical and physical transformations occurring in the natural and polluted troposphere.
J. N. Pitts, B. J. Finlayson-Pitts
openaire +1 more source
Primary photochemical processes in hexafluorobiacetyl
2011Absolute photochemical quantum yields of hexafluoro-biacetyl vapour have been obtained at various exciting wavelengths between 250 and 440 nm over the range 0.5 - 400 torr. The yields are strongly dependent on pressure demonstrating that vibrational relaxation is the dominant process competing with unimolecular dissociation.
openaire +1 more source
Non-conventional photochemical imaging processes
Journal of Chemical Education, 1973Considers the history and development of non-conventional photochemical imaging processes as well as the mechanisms of the photochemical formation of dyes, photochromism, and photopolymerization.
openaire +1 more source
Precise Photochemical Post‐Processing of Molecular Crystals
Angewandte Chemie International EditionAbstractMolecular crystals carry a great potential as new soft smart materials, with a plethora of recent examples overcoming the major obstacle of mechanical flexibility, and this research direction holds enormous potential to revolutionize optics, electronics, medicine, and space exploration.
Jianqun Qi +5 more
openaire +2 more sources
Molecular imaging in oncology: Current impact and future directions
Ca-A Cancer Journal for Clinicians, 2022Steven P Rowe, Martin G Pomper
exaly
Radiative Transfer in Photochemical Processes
1985Photochemical processes are analyzed as a special case of radiative transfer within participating media.
openaire +1 more source
Thermal, Photophysical, and Photochemical Processes
1996A proper definition of thermal (photothermal) and non-thermal (photochemical) laser processing would require a detailed knowledge of the fundamental interactions between laser light and matter, and of the various relaxation times involved. This information is available only for a few special systems.
openaire +1 more source