Published February 1, 1992 | Version v1
Journal article Metadata-only

56Co standardization and half-life

Creators

  • 1. Physikalisch-Technische Bundesanstalt (PTB), Braunschweig (Germany)
  • 2. National Physical Lab. (NPL), Teddington (United Kingdom)
  • 3. Lab. Primaire des Rayonnements Ionisants (LPRI), CEN Saclay, 91 - Gif-sur-Yvette (France)

Description

A recent study of radionuclides used for the calibration of gamma-ray detection systems highlighted 56Co as one for which a better half-life value and improved standards are required. A EUROMET project was established between three national standards laboratories to standardize a solution of 56Co and to conduct new measurements of the half-life. The standardization results agreed within the uncertainties. For the half-life, values of 77.210±0.028 and 77.290±0.040 d were obtained. After a re-evaluation of published half-life data, a value of 77.233±0.027 d is recommended. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section A
Journal Volume
312
Journal Issue
1/2
Series
Nucl. Instrum. Methods Phys. Res., Sect. A.
Journal Page Range
334-338
ISSN
0168-9002
CODEN
NIMAE

Conference

Title
Biennial meeting of the International Committee for Radionuclide Metrology (ICRM) including the international symposium on radionuclide metrology and its applications.
Dates
27-31 May 1991.
Place
Madrid (Spain).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
23041043
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
BETA DETECTION; BETA-PLUS DECAY; CALIBRATION STANDARDS; COBALT 56; COINCIDENCE CIRCUITS; COINCIDENCE METHODS; EXPERIMENTAL DATA; FOUR-PI COUNTING; GAMMA DETECTION; GAMMA SPECTROSCOPY; HALF-LIFE; HIGH-PURITY GE DETECTORS; LI-DRIFTED GE DETECTORS; NAI DETECTORS; PROPORTIONAL COUNTERS; STANDARDIZATION
Descriptors DEC
BETA DECAY; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CHARGED PARTICLE DETECTION; COBALT ISOTOPES; COUNTING TECHNIQUES; DATA; DAYS LIVING RADIOISOTOPES; DECAY; DETECTION; ELECTRON CAPTURE RADIOISOTOPES; ELECTRONIC CIRCUITS; GE SEMICONDUCTOR DETECTORS; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPES; LI-DRIFTED DETECTORS; MEASURING INSTRUMENTS; NUCLEAR DECAY; NUCLEI; NUMERICAL DATA; ODD-ODD NUCLEI; RADIATION DETECTION; RADIATION DETECTORS; RADIOISOTOPES; SCINTILLATION COUNTERS; SEMICONDUCTOR DETECTORS; SOLID SCINTILLATION DETECTORS; SPECTROSCOPY; STANDARDS