Results 11 to 20 of about 39,097 (209)

The Role of Benzonitrile Chlorination Explored by Dissociative Electron Attachment. [PDF]

open access: yesChemphyschem
Experimental and theoretical dissociative electron attachment study of 2‐ and 4‐chlorobenzonitrile. The dissociative electron attachment process to ortho‐ and para‐chlorobenzonitrile was investigated in the 0–12 eV energy range with a crossed‐beam time‐of‐flight mass spectrometer, supported by quantum chemical scattering calculations.
Guerra P   +5 more
europepmc   +2 more sources

Revisiting CN<sup>-</sup> Formation Mechanisms in Electron Collisions with Benzonitrile. [PDF]

open access: yesChemphyschem
This study explores negative ion formation via electron attachment, revealing CN− formation at 3.0 and 7–10 eV. Dissociation pathways are analyzed using G4(MP2) and CASPT2 calculations, highlighting the coupling between the π4* and σ* resonances critical for interstellar chemistry. Radiation‐induced processes in the aromatic cyano compound benzonitrile
Rodrigues R   +8 more
europepmc   +2 more sources

Technical Constraints on Interstellar Interferometry and Spatially Resolving the Pulsar Magnetosphere

open access: yesThe Astrophysical Journal, 2023
Scintillation of pulsar radio signals caused by the interstellar medium can in principle be used for interstellar interferometry. Changes in the dynamic spectra as a function of pulsar longitude were in the past interpreted as having spatially resolved ...
M. V. Popov   +8 more
doaj   +1 more source

SCATTERING OF PULSAR RADIO EMISSION BY THE INTERSTELLAR PLASMA [PDF]

open access: yesThe Astrophysical Journal, 2010
We present simulations of scattering phenomena which are important in pulsar observations, but which are analytically intractable. The simulation code, which has also been used for solar wind and atmospheric scattering problems, is available from the authors.
Coles, W. A.   +4 more
openaire   +4 more sources

High‐Pressure Carbonaceous Phases as Minerals

open access: yesGeophysical Monograph Series, Page 11-23., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Oliver Tschauner
wiley  

+1 more source

Quantum Dynamics of Rotational Transitions in CN (X2Σ+) by H+ Collisions

open access: yesFrontiers in Chemistry, 2021
Collisional cross-sections of inelastic rotational excitations of CN in its ground electronic state (X2Σ+) by H+ scattering are studied by the exact quantum mechanical close-coupling (CC) method at very low collision energies (0–600 cm−1) relevant to ...
Bhargava Anusuri   +2 more
doaj   +1 more source

Interstellar Scattering [PDF]

open access: yesSymposium - International Astronomical Union, 1984
Fine scale electron density fluctuations in the interstellar medium (ISM) are manifest as scintillations and temporal broadening of pulsar signals and as angular broadening of galactic and extragalactic sources. Although scattering off the fluctuations is often a nuisance for conventional studies of radio sources, analysis or searches for interstellar ...
openaire   +1 more source

Interstellar Scattering in the Galactic Anticenter [PDF]

open access: yesInternational Astronomical Union Colloquium, 1998
AbstractInterstellar scattering dictates the limiting resolution for many pulsars and OH masers and some extragalactic sources, a limit made more important by the advent of spacebased VLBI. Scattering observations have been biased toward the inner Galaxy, leaving largely unconstrained basic parameters such as the scattering medium’s extent in the outer
T. Joseph W. Lazio, James M. Cordes
openaire   +1 more source

A Comprehensive Model of Morphologically Realistic Cosmic Dust Particles: An Application to Mimic the Unusual Polarization Properties of the Interstellar Comet 2I/Borisov

open access: yesThe Astrophysical Journal, 2023
The cosmic dust particles found in space are mainly porous aggregates of smaller grains. Theoretically, these aggregates are replicated using fractal geometry, assuming a cluster of spheres.
Prithish Halder, Sujan Sengupta
doaj   +1 more source

Angular Broadening of Intraday Variable AGN. II. Interstellar and Intergalactic Scattering [PDF]

open access: yes, 2007
We analyze a sample of 58 multi-wavelength, Very Long Baseline Array observations of active galactic nuclei (AGN) to determine their scattering properties.
Alan L. Fey   +8 more
core   +1 more source

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