<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Rubidium-90m
Summary data
General
Classification
Isotope: Rb-90m
Atomic number (Z): 37
Mass number (A): 90
Neutron number (N): 53
Radioactive decay
Decay modes: β-, Internal transition
Half-life: 258.0 [s]
Decay constant: 2.6866e-03 [1/s]
Daughters: Sr-90 (97.4%), Rb-90 (2.6%)
Radioactive daughters: Sr-90, Rb-90
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.41041 [MeV]
Mean photon energy: 3.24062 [MeV]
Air kerma rate constant, Γ10: 9.914e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 9.914e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.260e-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-:
2.260e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 5.192e-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-90m 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-90m 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-90m 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-90m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.52770e-05 |
2.110e-01 |
X-ray |
|
8.24230e-01 |
8.656e-02 |
Gamma |
|
8.31690e-01 |
9.409e-01 |
Gamma |
|
9.52440e-01 |
1.684e-02 |
Gamma |
|
1.06070e+00 |
7.621e-02 |
Gamma |
|
1.24284e+00 |
3.030e-02 |
Gamma |
|
1.27177e+00 |
1.543e-02 |
Gamma |
|
1.37536e+00 |
1.665e-01 |
Gamma |
|
1.37720e+00 |
2.258e-02 |
Gamma |
|
1.66561e+00 |
4.799e-02 |
Gamma |
|
1.69616e+00 |
1.647e-02 |
Gamma |
|
1.73893e+00 |
1.882e-02 |
Gamma |
|
2.12830e+00 |
5.194e-02 |
Gamma |
|
2.75268e+00 |
1.148e-01 |
Gamma |
|
2.83443e+00 |
1.844e-02 |
Gamma |
|
3.20509e+00 |
1.120e-02 |
Gamma |
|
3.31700e+00 |
1.430e-01 |
Gamma |
|
3.50352e+00 |
2.362e-02 |
Gamma |
|
3.57282e+00 |
1.534e-02 |
Gamma |
|
4.19275e+00 |
1.138e-02 |
Gamma |
|
4.45407e+00 |
1.176e-02 |
Gamma |
|
2.99992e-01 |
1.236e-02 |
Beta |
|
5.31863e-01 |
1.618e-02 |
Beta |
|
6.19535e-01 |
1.377e-02 |
Beta |
|
6.41177e-01 |
3.096e-02 |
Beta |
|
6.48811e-01 |
1.146e-02 |
Beta |
|
9.33813e-01 |
1.618e-02 |
Beta |
|
9.66118e-01 |
9.046e-02 |
Beta |
|
1.05349e+00 |
1.578e-01 |
Beta |
|
1.10613e+00 |
1.779e-02 |
Beta |
|
1.32018e+00 |
1.437e-01 |
Beta |
|
1.38418e+00 |
6.573e-02 |
Beta |
|
1.80464e+00 |
1.327e-02 |
Beta |
|
1.82514e+00 |
1.749e-02 |
Beta |
|
1.83983e+00 |
1.498e-02 |
Beta |
|
1.97933e+00 |
3.116e-02 |
Beta |
|
2.13076e+00 |
4.221e-02 |
Beta |
|
2.24466e+00 |
3.518e-02 |
Beta |
|
2.64214e+00 |
1.508e-01 |
Beta |
|
1.26043e-05 |
6.185e-02 |
Auger electron |
|
6.50076e-05 |
6.200e-02 |
Auger electron |
|
7.35486e-05 |
2.502e-02 |
Auger electron |
|
1.48974e-03 |
2.335e-02 |
Auger electron |
|
9.17610e-02 |
1.917e-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)
<= Return to MIRDspec isotope database
