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Efficiencies for production of atomic nitrogen and oxygen by relativistic proton impact in air
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In this paper, the Massey-Mohr generalized oscillator strength surface is parametrized by simultaneous fitting to (1) empirical data, (2) the Bethe sum rule, and (3) doubly differential cross sections for ionization.Abstract:
Relativistic electron and proton impact cross sections are obtained and represented by analytic forms which span the energy range from threshold to 109 eV. For ionization processes, the Massey–Mohr continuum generalized oscillator strength surface is parametrized. Parameters are determined by simultaneous fitting to (1) empirical data, (2) the Bethe sum rule, and (3) doubly differential cross sections for ionization. Branching ratios for dissociation and predissociation from important states of N2 and O2 are determined. The efficiency for the production of atomic nitrogen and oxygen by protons with kinetic energy less than 1 GeV is determined using these branching ratio and cross section assignments.read more
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Ultraviolet spectroscopy and remote sensing of the upper atmosphere
TL;DR: A review of the field of airglow analysis can be found in this article, where the basic processes leading to excitation of atomic and molecular energy states are discussed and the current status of knowledge of individual emission features seen in the air glow is examined for the purpose of selecting those species most useful as diagnostics of the state of the upper atmosphere and ionosphere.
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M stars as targets for terrestrial exoplanet searches and biosignature detection.
John Scalo,Lisa Kaltenegger,Antígona Segura,Malcolm Fridlund,Ignasi Ribas,Yu. N. Kulikov,John Lee Grenfell,Heike Rauer,P. Odert,Martin Leitzinger,Franck Selsis,Maxim L. Khodachenko,Carlos Eiroa,James F. Kasting,Helmut Lammer +14 more
TL;DR: It is concluded that attempts at remote sensing of biosignatures and nonbiological markers from M star planets are important, not as tests of any quantitative theories or rational arguments, but instead because they offer an inspection of the residues from a Gyr-long biochemistry experiment in the presence of extreme environmental fluctuations.
Journal ArticleDOI
The effect of particle precipitation events on the neutral and ion chemistry of the middle atmosphere: II. Odd hydrogen
TL;DR: In this paper, a one dimensional time-dependent model of the neutral and ion chemistry of the middle atmosphere has been used to examine the production of odd hydrogen (H, OH, and HO2) during charged particle precipitation.
Journal ArticleDOI
The auroral 6300 Å emission: Observations and modeling
TL;DR: In this article, a tomographic inversion is used to analyze measurements of the auroral atomic oxygen emission line at 6300 A made by the atmosphere explorer visible airglow experiment.
Journal ArticleDOI
Solar forcing for CMIP6 (v3.2)
Katja Matthes,Katja Matthes,Bernd Funke,M. E. Andersson,Luke Barnard,Jürg Beer,Paul Charbonneau,Mark A. Clilverd,Thierry Dudok de Wit,Margit Haberreiter,Aaron T. Hendry,Charles H. Jackman,Matthieu Kretzschmar,Tim Kruschke,Markus Kunze,Ulrike Langematz,Daniel R. Marsh,Amanda C. Maycock,Stergios Misios,Craig J. Rodger,Adam A. Scaife,Annika Seppälä,Ming Shangguan,Miriam Sinnhuber,Kleareti Tourpali,Ilya Usoskin,Max van de Kamp,Pekka T. Verronen,Stefan Versick +28 more
TL;DR: In this paper, the authors provided the recommended solar forcing dataset for CMIP6 and highlighted changes with respect to CMIP5, which is the first time that a recommendation for solar-driven particle forcing has been provided for a CMIP exercise.
References
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Book
The theory of atomic collisions
TL;DR: The perturbation theory has been applied to many-body problems and applications, such as electron collisions with atoms, collisions between atomic systems, nuclear collisions, and certain aspects of two-body systems under relativistic collisions.
Journal ArticleDOI
The Spectrum of Molecular Oxygen
TL;DR: In this article, a critical review and compilation of the observed and predicted spectroscopic data on O2 and its ions O2−, O2+ and O22+ is presented.
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Electron Impact Ionization Cross-Section Data for Atoms, Atomic Ions, and Diatomic Molecules: I. Experimental Data
L. J. Kieffer,Gordon H. Dunn +1 more
TL;DR: In this article, a compilation and critical evaluation of absolute cross-sections for ionization of atoms and diatomic molecules by electron impact is presented, along with a brief discussion of relative cross-section data near threshold.
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Bremsformel für Elektronen relativistischer Geschwindigkeit
TL;DR: In this article, a Tabelle des theoretischen Energieverlustes von Elektronen and Protonen in terms of Lichtgeschwindigkeit wird gegeben.