Hyperfine Interactions

, Volume 22, Issue 1–4, pp 19–38 | Cite as

Nuclear orientation and quadrupole interaction

Nuclear Orientation General

Abstract

In quadrupole-interaction nuclear-orientation experiments (QI-NO) the quadrupole interaction frequency VQ=e2qQ/h is determined from the angular distribution of γ-rays emitted in the decay of radioactive nuclei oriented at low temperatures as impurities in noncubic single-crystal matrices. This means that either the spectroscopic quadrupole moment Q of radioactive isotopes or the crystal electric field gradient eq can be determined from QI-NO experiments. Recent developments in QI-NO are discussed, especially with regard to the investigation of nuclei far from stability, with the following main topics: (1) Experimental aspects; (2) Quadrupole moments of short-lived nuclei; (3) Systematics of electric field gradients; (4) QI-NO with “new” host lattices, such as dichalcogenides; (5) Resonance techniques.

Keywords

Radioactive Isotope Angular Distribution Quadrupole Moment Electric Field Gradient Quadrupole Interaction 

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Copyright information

© J.C. Baltzer A.G., Scientific Publishing Company 1985

Authors and Affiliations

  • E. Hagn
    • 1
  1. 1.Physik-DepartmentTechnische Universität MünchenGarchingFRG

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