<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Rhodium-103m
Summary data
General
Classification
Isotope: Rh-103m
Atomic number (Z): 45
Mass number (A): 103
Neutron number (N): 58
Radioactive decay
Decay modes: Internal transition
Half-life: 56.11 [m]
Decay constant: 2.0587e-04 [1/s]
Daughters: Rh-103 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.03768 [MeV]
Mean photon energy: 0.00172 [MeV]
Air kerma rate constant, Γ10: 9.615e-19 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 9.615e-19 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 6.037e-15 [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-:
6.037e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.756e-16
[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/Rh-103m 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/Rh-103m Summary 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/Rh-103m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
9.96021e-06 |
6.870e+00 |
X-ray |
|
2.68654e-03 |
1.946e-02 |
X-ray |
|
2.82848e-03 |
1.334e-02 |
X-ray |
|
2.00395e-02 |
2.124e-02 |
X-ray |
|
2.01865e-02 |
4.021e-02 |
X-ray |
|
3.36057e-05 |
2.713e+00 |
Auger electron |
|
1.06422e-04 |
6.003e-02 |
Auger electron |
|
1.20373e-04 |
6.867e-01 |
Auger electron |
|
2.60193e-04 |
1.617e+00 |
Auger electron |
|
3.05253e-04 |
1.046e-02 |
Auger electron |
|
2.26948e-03 |
6.484e-01 |
Auger electron |
|
2.60930e-03 |
1.201e-01 |
Auger electron |
|
1.65640e-02 |
9.104e-02 |
Conversion electron |
|
1.69094e-02 |
1.223e-02 |
Auger electron |
|
3.66035e-02 |
2.989e-01 |
Conversion electron |
|
3.67505e-02 |
4.213e-01 |
Conversion electron |
|
3.92603e-02 |
1.496e-01 |
Conversion electron |
|
3.97550e-02 |
2.433e-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
