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-25R
HALF-LIFE
The number before the letter is the value of the half-life. The number following the letter is
the reported uncertainty on the half-life.
Examples:
12.34 D1 means 12.34 days ±0.01 days
12.34 D11 means 12.34 days ±0.11 days
12.340 D1 means 12.340 days ±0.001 days
1.234 D1 means 1.234 days ±0.001 days
REFERENCES
This is the source of the data from which the calibration number was calculated. NBS or LMR
means that the calibration number was obtained by measuring a standard reference material
(SRM).
NM75 (Nuclear Medicine 75): L.T. Dillman and F.C. Von Der Lage, Radionuclide Decay
Schemes and Nuclear Parameters for Use in Radiation-Dose Estimation. NM/MIRD
Pamphlet No. 10, 1975.
ORNL76: M.J. Martin Ed., Nuclear Decay Data for Selected Radionuclides. ORNL-5114,
Oak Ridge National Laboratory, March 1976.
NDT70: M.J. Martin and P.H. Blichert-Toft. Radioactive Atoms: Auger-Electrons, α-, β-, γ-
and X-Ray Data. Nuclear Data Tables A, Vol. 8, Nos.1, 2. October, 1970
NDS: Nuclear Data Sheets, Academic Press.
Martin: M. J. Martin. Evaluated Nuclear Data File. Nuclear Data Project. Oak Ridge National
Laboratory.
NCRP-58: National Council on Radiation Protection and Measurement., Report No.58 A
HANDBOOK OF RADIOACTIVITY MEASUREMENTS PROCEDURE.
NUCLIDES and ISOTOPES: Chart of the nuclides. Fourteenth Edition.
General Electric Company Nuclear Energy Operations. Rev. 1989
NIST, Radionuclide Calibrator Measurements of F18 in a 3ml Plastic Syringe. Applied
Radiation and Isotopes. 66, 988-993, J.T. Cessna, M.K. Schultz, T. Leslie, N. Bores, 2008
A2 - 6 APPENDIX II June 09