164Dy

164Dy is a stable isotope of the element dysprosium with mass number 164, occurring among the naturally abundant lanthanides found in Earth's crust, meteorites, and geological deposits. It is one of several isotopes contributing to the chemical and physical behavior of rare earth element occurrences in mining districts and has relevance to neutron physics, nuclear reactors, and materials research.

Introduction

164Dy exists within the series of lanthanide elements associated with prominent locations and institutions that study rare earth chemistry and geochemistry, such as Uppsala University, Smithsonian Institution, Max Planck Society, Lawrence Berkeley National Laboratory, and Los Alamos National Laboratory. Its presence is noted alongside other isotopes contributing to signatures used by researchers at United States Geological Survey, Institut de Physique du Globe de Paris, Geological Survey of Canada, Imperial College London, and ETH Zurich when tracing provenance in mining regions like Inner Mongolia, Bayan Obo, Mountain Pass, California, Kvanefjeld and Mount Weld. Analysts at Oak Ridge National Laboratory, Argonne National Laboratory, and National Institute of Standards and Technology apply mass spectrometry techniques developed by teams at University of Cambridge, Massachusetts Institute of Technology, California Institute of Technology, Stanford University, and University of Tokyo to quantify isotopic abundances, while collaborative projects with European Space Agency and NASA examine extraterrestrial samples that include rare earth isotopic information.

Nuclear Properties

The nuclear structure and properties of this isotope have been characterized by experiments at facilities such as CERN, GSI Helmholtz Centre for Heavy Ion Research, Rutherford Appleton Laboratory, TRIUMF, RIKEN, GANIL, and J-PARC using detectors and techniques developed at Brookhaven National Laboratory and Fermi National Accelerator Laboratory. Nuclear level data leveraged by theoreticians at Princeton University, University of Oxford, Harvard University, University of Chicago, and University of Michigan relate to neutron capture cross sections measured at neutron sources operated by Institut Laue–Langevin, European Spallation Source, Spallation Neutron Source, and Helmholtz Centre Berlin. Its nuclear spin, magnetic moment, and quadrupole moment parameters are compared with shell-model predictions from groups at CEA Saclay, Los Alamos National Laboratory, Korea Advanced Institute of Science and Technology, and Chinese Academy of Sciences. Studies published through collaborations involving American Physical Society, Royal Society, Deutsche Physikalische Gesellschaft, and Japan Society for the Promotion of Science contribute to databases maintained by International Atomic Energy Agency and National Nuclear Data Center.

Isotopic Production and Occurrence

Natural occurrence of the isotope is tied to mineral assemblages studied by research teams from Montana Technological University, Colorado School of Mines, University of Leeds, University of Cape Town, and University of Queensland in deposits like those investigated by companies including Molycorp, Lynas Corporation, Iluka Resources, China Northern Rare Earth Group, and Rio Tinto. Industrial extraction and separation techniques utilize solvent extraction methods refined by engineers at Battelle Memorial Institute, Siemens, General Electric, and BASF, while isotope separation for research is performed by facilities such as Pacific Northwest National Laboratory, National Research Council (Canada), and university mass spectrometry centers at ETH Zurich and University of California, Berkeley. Isotopic ratios involving this isotope are used by paleoclimatologists at Columbia University, Pennsylvania State University, and University of Arizona to infer processes in sedimentary records, and by cosmochemists at California Institute of Technology and University of Hawaii studying meteorite chronologies.

Applications and Uses

Applications exploiting the physical and nuclear properties have been developed through collaborations involving General Motors, Boeing, Lockheed Martin, and materials research groups at Oak Ridge National Laboratory, Fraunhofer Society, and National Institute for Materials Science in Japan. Use cases include neutron absorption tailoring in reactor control materials studied with teams at Electric Power Research Institute, Institut de Physique Nucléaire d'Orsay, and Kurchatov Institute, and specialty magnetic alloys pursued by researchers at Honda, Toyota, Hitachi, and Siemens AG. Research into optical and laser materials involving rare earth dopants engages groups at University of Southampton, University of St Andrews, University of Florence, Max Planck Institute for Quantum Optics, and Rudolf Peierls Centre for Theoretical Physics, while isotope-specific investigations inform nuclear forensics conducted by Federal Bureau of Investigation, Department of Homeland Security, and international partners like INTERPOL and NATO.

Safety and Handling

Handling and safety protocols for samples and compounds containing this isotope follow standards and guidance from International Atomic Energy Agency, World Health Organization, Occupational Safety and Health Administration, National Institute for Occupational Safety and Health, European Chemicals Agency, and national regulators such as United Kingdom Health and Safety Executive. Laboratories at Johns Hopkins University, Yale University, University of California, San Francisco, Karolinska Institutet, and McGill University implement material safety data protocols consistent with recommendations from American Chemical Society and Royal Society of Chemistry for rare earth materials processing. Emergency response coordination may involve Federal Emergency Management Agency, European Union Civil Protection Mechanism, and national ministries of health where industrial incidents require environmental monitoring by agencies like Environmental Protection Agency (United States), Environment and Climate Change Canada, and Australian Department of Agriculture, Water and the Environment.

Category:Isotopes of dysprosium