SCHEDULED MAINTENANCE
Europium-151 Mössbauer spectroscopic studies of after-effects of the electron-capture decay of gadolinium-151 and the β-decay of samarium-151
Abstract
151 Eu Mössbauer spectrometry has been used to study the after-effects of electron-capture decay of 151Gd and β-decay of 151Sm in inorganic and organic lanthanide compounds doped with these nuclides. No charge state other than 151EuIII was observed following nuclear decay in lanthanide oxides and fluorides doped with 151Gd or 151Sm. However, both the bivalent state. l51EuII, and the tervalent state. 151EuIII, were observed following the electron-capture decay of 151Gd-doped organic lanthanide compounds. The effects of varying temperature, the organic ligand, and the lanthanide matrix element were investigated. The presence of water of crystallisation was not essential for the production and stabilization of 151EuII in lanthanide oxalates. The presence of a conjugated organic ligand in 151Gd-doped compounds suppressed the formation of 151EuII.
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