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Radionuclide Dosimetric Data Sheets
Rubidium-79
Summary data
General
Classification
Isotope: Rb-79
Atomic number (Z): 37
Mass number (A): 79
Neutron number (N): 42
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 22.9 [m]
Decay constant: 5.0447e-04 [1/s]
Daughters: Kr-79 (100.0%)
Radioactive daughters: Kr-79
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.80987 [MeV]
Mean photon energy: 1.44927 [MeV]
Air kerma rate constant, Γ10: 3.194e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 6.423e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.298e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 0.000e+00
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
1.298e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.322e-13
[Gy·kg/Bq·s]
Dose point kernels (plot)
Dose point kernel source: Graves, et al. Medical Physics. 2019 Nov.; 46(11):5284-5293.
Note: Bins are spaced every 0.1 mm until a radius of 10 cm, and every 1 mm until a radius of 2 m.
Download tabulated dose point kernel file here: www.mirdsoft.org/products/MIRDspecs/Rb-79 DPK.csv
Summary spectra (plot)
Spectra source: ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).
Download tabulated summary spectra file here: www.mirdsoft.org/products/MIRDspecs/Rb-79 Summary Spectrum.csv
Beta spectra (plot)
Spectra source: ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).
Download tabulated beta spectra file here: www.mirdsoft.org/products/MIRDspecs/Rb-79 Beta Spectrum.csv
Tabulated data
Summary spectra (table)
Spectra source: ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).
Note: Radiations with yield < 0.01 are excluded from the table, but are available in the linked *.csv data.
Download tabulated summary spectra file here: www.mirdsoft.org/products/MIRDspecs/Rb-79 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.93794e-05 |
3.707e+00 |
X-ray |
|
1.25517e-02 |
8.741e-02 |
X-ray |
|
1.26066e-02 |
1.686e-01 |
X-ray |
|
1.40649e-02 |
1.230e-02 |
X-ray |
|
1.40730e-02 |
2.399e-02 |
X-ray |
|
1.29720e-01 |
1.074e-01 |
Gamma |
|
1.43410e-01 |
1.391e-01 |
Gamma |
|
1.47060e-01 |
1.049e-01 |
Gamma |
|
1.54820e-01 |
7.900e-02 |
Gamma |
|
1.60760e-01 |
8.593e-02 |
Gamma |
|
1.82770e-01 |
1.917e-01 |
Gamma |
|
3.50600e-01 |
7.230e-02 |
Gamma |
|
3.84100e-01 |
1.178e-02 |
Gamma |
|
3.97600e-01 |
6.052e-02 |
Gamma |
|
4.61500e-01 |
1.224e-02 |
Gamma |
|
5.05400e-01 |
1.063e-01 |
Gamma |
|
5.06000e-01 |
2.079e-02 |
Gamma |
|
5.11000e-01 |
1.668e+00 |
Annihilation photon |
|
5.33300e-01 |
1.294e-02 |
Gamma |
|
6.22200e-01 |
8.778e-02 |
Gamma |
|
6.88100e-01 |
2.310e-01 |
Gamma |
|
6.85577e-01 |
1.276e-02 |
Positron |
|
8.28107e-01 |
1.029e-01 |
Positron |
|
8.57437e-01 |
4.154e-01 |
Positron |
|
8.81541e-01 |
1.088e-02 |
Positron |
|
1.04144e+00 |
1.375e-01 |
Positron |
|
1.11644e+00 |
1.019e-01 |
Positron |
|
1.19687e+00 |
1.088e-02 |
Positron |
|
5.62642e-05 |
1.622e+00 |
Auger electron |
|
6.54878e-05 |
6.370e-01 |
Auger electron |
|
9.85474e-05 |
1.116e-01 |
Auger electron |
|
1.40712e-03 |
5.696e-01 |
Auger electron |
|
1.51162e-03 |
4.112e-02 |
Auger electron |
|
3.02000e-03 |
2.666e-02 |
Conversion electron |
|
4.82000e-03 |
2.213e-02 |
Conversion electron |
|
1.07980e-02 |
1.247e-01 |
Auger electron |
|
1.23371e-02 |
3.956e-02 |
Auger electron |
|
1.15440e-01 |
2.233e-01 |
Conversion electron |
|
1.27818e-01 |
2.031e-02 |
Conversion electron |
|
1.27992e-01 |
1.469e-02 |
Conversion electron |
|
1.28047e-01 |
1.705e-02 |
Conversion electron |
|
1.32780e-01 |
2.029e-02 |
Conversion electron |
Useful Links
Isotope decay characteristics are periodically updated as better measurements can be made - changes that may not be reflected on this page. Please see useful links:
National Nuclear Data Center (NNDC): https://www.nndc.bnl.gov/nudat3/mird/
International Atomic Energy Agency (IAEA) Livechart: https://www-nds.iaea.org/relnsd/vcharthtml/VChartHTML.html
Reference Links
ICRP Report 107: https://www.icrp.org/publication.asp?id=ICRP%20Publication%20107
Graves et al. Dose Point Kernels: https://doi.org/10.1002/mp.13789
MIRD Decay Schemes 2nd Edition: https://sites.snmmi.org/SNMMI-MAIN/iCore/Store/StoreLayouts/Item_Detail.aspx?iProductCode=0-932004-80-6
MIRDsoft MIRDspecs version 20250101 (www.mirdsoft.org)
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