Conveners
Nuclear decay data: 2 Oral and 2 Poster contributions
- Mark Kellett (CEA\LNE-LNHB)
- Alan L. Nichols (Department of Physics, University of Surrey, Guildford, United Kingdom; Manipal Academy of Higher Education, Manipal, Karnataka, India)
Nuclear decay data: 3 Oral contributions and ICRM WG Meeting
- Mark Kellett (CEA\LNE-LNHB)
- Alan L. Nichols (Department of Physics, University of Surrey, Guildford, United Kingdom; Manipal Academy of Higher Education, Manipal, Karnataka, India)
Description
Nuclear decay data and their use in radionuclide metrology
In 2020, the National Institute of Standards and Technology (NIST) reported on a primary activity standardization of 224Ra in equilibrium with its progeny. Subsequently, measurements of the absolute emission intensity for its main gamma ray were reported in the contexts of a bilateral comparison with the National Physical Laboratory (NPL). More recently, NIST has standardized 212Pb in...
Caesium-137 is a non-naturally occurring fission product, in particular one of the many radionuclides produced in uranium-based nuclear reactors. It decays through β- transitions, populating both the ground state and the first two excited states of 137Ba. With a half-life of approximately 30 years, and a well-known and intense 662 keV gamma-ray emission, this radionuclide is relatively easy to...
The short-lived (T1/2 = 26.801(2) h) beta- - emitting radionuclide has been investigated for a wide range of therapeutic medical applications over the past several decades (c.f., Klaassen et al 2019). The safe and effective use of these types of radionuclides for therapy requires accurate dose assessments, which in turn require the most accurate nuclear decay data as input to the calculations....
The triple to double coincidence ratio (TDCR) liquid scintillation measurement technique is commonly used in national metrology institutes (NMIs) to perform standardization of pure beta emitters. LNE-LNHB has developed two new portable TDCR devices. Such portable instrumentation gives end-users access to a reference measurement method that can be used for a large number of radionuclides. It...
Authors (affiliation): Denis E. Bergeron 1, Jeffrey T. Cessna 1, Ryan P. Fitzgerald 1, Lizbeth Laureano-Pérez 1, Leticia Pibida 1, Brian E. Zimmerman 1
(1 NIST, USA)
Gadolinium-153 decays 100 % by electron capture to several excited levels of Eu-153.Applications in nuclear medicine and in gamma-ray spectrometry calibrations require improved nuclear decay data for Gd-153.Several studies...
Gallium-68 is a short lived (T1/2 = 67.83 (20) min), positron-emitting radionuclide that is commonly used in the diagnosis of prostate cancer via positron emission tomography (PET), along with other diagnostic techniques. Due to its medical relevance, the accuracy of its half-life is of great importance.
There have been at least 12 determinations of the 68Ga half-life, occurring from...
Authors: Marco Capogni 1,*, Aldo Fazio 1, Maria Vaccaro 2 and Pierino De Felice 1
Affiliation:
1 Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti (INMRI)-ENEA
C.R. Casaccia - Via Anguillarese 301 I-00123 Roma, Italia;
2 University of Rome “La Sapienza”- Department of Physics – P.le Aldo Moro 2, I-00185, Rome, Italy
Holmium-166 is a radionuclide of interest in medical...
