Anisotropic hyperfine interactions of rare‐gas nuclei near trapped hydrogen atomsa)

摘要: The EPR spectra of hydrogen atoms trapped in xenon and krypton at 10 K have been reinvestigated. Analysis the anisotropic 129Xe (enriched), 83Kr hyperfine structure shows H are octahedrally symmetric interstitial site (6 nearest neighbors) Kr Xe matrices. For Kr, a simple model which considers only overlap orbitals purely covalent Kr⋅⋅⋅H ’’molecules’’ accounts very well for observed electronic g factor. To account corresponding magnetic constants Xe, however, it is necessary to consider, along with effects, effects transfer charge from neighbor interstitially atom, as described by admixture small Xe+⋅⋅⋅H− ionic component into Xe⋅⋅⋅H ’’molecule’’. This may also be factor surprisingly large differences factors D Xe.