Published March 1977 | Version v1
Journal article Metadata-only

Isotope effects in interstellar molecules by chemical hyperfine interaction

Creators

  • 1. Technische Univ. Muenchen (Germany, F.R.). Inst. fuer Physikalische Chemie und Theoretische Chemie
  • 2. Stuttgart Univ. (TH) (Germany, F.R.)
  • 3. Max-Planck-Institut fuer Physik und Astrophysik, Garching/Muenchen (Germany, F.R.). Inst. fuer Extraterrestrische Physik

Description

If free radicals recombine on grain surfaces, not only the different masses of isotopes but also their differing nuclear spin moments (e.g. 12C/13C, 14N/15N, 17O/18O) may imply variations in the recombination probability due to hyperfine interaction. This mechanism has not been accounted for so far. (orig.)

Abstract (German)

Bei der Rekombination freier Radikale auf Kornoberflaechen zeigt sich in den unterschiedlichen Massen der Isotope ebenso wie im unterschiedlichen Spin-Drehimpuls der Kerne (z.B. 12C/13C, 14N/15N, 17O/18O) eine unterschiedliche Rekombinationswahrscheinlichkeit infolge von Hyperfeinwechselwirkung. Dieser Mechanismus wurde bisher nicht behandelt. (orig.)

Additional details

Publishing Information

Journal Title
Astron. Astrophys.
Journal Volume
55
Journal Issue
2
Series
Astron. Astrophys.
Journal Page Range
315-318

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
8333721
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
CARBON 12; CARBON 13; COSMIC DUST; HYPERFINE STRUCTURE; INTERSTELLAR GRAINS; ISOTOPE EFFECTS; ISOTOPE RATIO; MOLECULES; NITROGEN 14; NITROGEN 15; OXYGEN 17; OXYGEN 18; RECOMBINATION
Descriptors DEC
CARBON ISOTOPES; DUSTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; ISOTOPES; LIGHT NUCLEI; NITROGEN ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; OXYGEN ISOTOPES; PARTICLES; STABLE ISOTOPES

Optional Information

Notes
1 fig.; with refs.