English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We analyze the quantum-mechanical rotational excitation/de-excitationspectrum and cross sections of CN molecules during low and high-energycollisions with protons, H+. The problem is of significant importance inastrophysics of the early Universe, specifically connected with the problems ofcosmic microwave background (CMB) radiation. A quantum-mechanicalclose-coupling method is applied in this work. The cyanide molecule (CN) istreated as a rigid rotor, i.e. the distance between the carbon and nitrogenatoms is fixed at an average equilibrium value. The new results of theexcitation/de-excitation cross-sections and corresponding thermal ratecoefficients are compared with the results of few previous calculationsperformed on the basis of few approximate semiclassical frameworks. Theinteraction potential between CN and H+ is taken in the following form: protoninduced polarization potential + proton-dipole potential + proton-quadrupolepotential.

CN molecule collisions with H+ at a wide range of astrophysical energies