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Radionuclide Dosimetric Data Sheets
Rubidium-90
Summary data
General
Classification
Isotope: Rb-90
Atomic number (Z): 37
Mass number (A): 90
Neutron number (N): 53
Radioactive decay
Decay modes: β-
Half-life: 158.0 [s]
Decay constant: 4.3870e-03 [1/s]
Daughters: Sr-90 (100.0%)
Radioactive daughters: Sr-90
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 2.04429 [MeV]
Mean photon energy: 2.02857 [MeV]
Air kerma rate constant, Γ10: 5.512e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 5.512e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 3.275e-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-:
3.275e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.250e-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-90 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-90 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-90 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-90 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
8.31690e-01 |
3.990e-01 |
Gamma |
|
1.06070e+00 |
9.536e-02 |
Gamma |
|
3.38324e+00 |
6.703e-02 |
Gamma |
|
3.53424e+00 |
4.030e-02 |
Gamma |
|
4.13551e+00 |
6.703e-02 |
Gamma |
|
4.36590e+00 |
7.980e-02 |
Gamma |
|
4.64645e+00 |
2.250e-02 |
Gamma |
|
5.18744e+00 |
1.165e-02 |
Gamma |
|
4.23714e-01 |
3.920e-02 |
Beta |
|
4.98647e-01 |
1.277e-02 |
Beta |
|
5.28082e-01 |
4.279e-02 |
Beta |
|
7.72456e-01 |
2.833e-02 |
Beta |
|
9.02003e-01 |
8.777e-02 |
Beta |
|
1.01626e+00 |
7.680e-02 |
Beta |
|
1.36491e+00 |
5.685e-02 |
Beta |
|
2.07466e+00 |
2.693e-02 |
Beta |
|
2.58425e+00 |
2.593e-01 |
Beta |
|
2.99193e+00 |
3.292e-01 |
Beta |
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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