Tm-165 is a radiolanthanide, usually in trivalent state.
Tm-165 decays by electron capture decay with a half-life of 30.1 hours to Er-165 that decays in turn with 10.3 hours half-life to stable Ho-165. Details on the properties of Er-165 are found here .
Tm-165 is produced by spallation reactions in thick tantalum targets with protons of high energy . The radionuclides are released from the target by high temperature and separated by off-line mass separation at the production facility MEDICIS at CERN as implanted ions into zinc-, aluminum- coated gold foils or NaCl-coated aluminum foils ,. The implanted collections are shipped as implanted and still need to undergo a dissolution and radiochemical purification separation step from the progenity of co-implanted Tb-149 isobaric oxide ions.
Activity will be shipped in form of ion-implanted solid samples.
Examples of use
|Decay||Decays to Er-165 (10.3 h half-life) that decays to stable Ho-165: 100% EC|
|Product Grade||n.c.a. (mass separation)|
|Chemical form||Implanted into solid foil|
|Radioactive Concentration (gamma spectrometry)||n.a.|
|Radionuclide Identification (gamma spectrometry)||243 keV, 297 keV and 807 keV gamma lines present|
|Radionuclidic purity (gamma spectrometry)||>99.9% at calibration time (<0.1% Gd-149 and Eu-145 as Tb-149 progeny)|
|Chemical purity (ICP-OES)||n.a.|
|Molar activity (ICP-OES)||n.a.|
|Apparent Molar Activity||n.a.|
|pH (pH strips)||n.a.|
|Activity limit for UN2910 (excepted package) shipment||20 MBq in dry state|