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Radionuclide Dosimetric Data Sheets

Ruthenium-105

Isotope:  Ru-105
Atomic number (Z):  44
Mass number (A):  105
Neutron number (N):  61

Decay modes:  β-
Half-life:  4.44 [h]
Decay constant:  4.3365e-05 [1/s]
Daughters:  Rh-105 (100.0%)
Radioactive daughters:  Rh-105

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.4406 [MeV]
Mean photon energy:  0.74802 [MeV]
Air kerma rate constant, Γ₁₀:  2.927e-17 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  2.927e-17 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  7.059e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δ_α:  0.000e+00 [Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δ_β-,β+,e-:  7.059e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  1.198e-13 [Gy·kg/Bq·s]

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/Ru-105 DPK.csv

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/Ru-105 Summary Spectrum.csv

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/Ru-105 Beta Spectrum.csv

 

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/Ru-105 Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
9.95912e-06	1.890e+00	X-ray
2.00395e-02	3.586e-02	X-ray
2.01865e-02	6.788e-02	X-ray
2.26963e-02	1.122e-02	X-ray
1.29782e-01	5.676e-02	Gamma
1.49100e-01	1.750e-02	Gamma
2.62830e-01	6.575e-02	Gamma
3.16440e-01	1.112e-01	Gamma
3.26140e-01	1.064e-02	Gamma
3.50180e-01	1.017e-02	Gamma
3.93360e-01	3.775e-02	Gamma
4.13530e-01	2.270e-02	Gamma
4.69370e-01	1.755e-01	Gamma
4.99300e-01	2.034e-02	Gamma
6.56210e-01	2.081e-02	Gamma
6.76360e-01	1.566e-01	Gamma
7.24300e-01	4.730e-01	Gamma
8.75850e-01	2.502e-02	Gamma
9.69440e-01	2.105e-02	Gamma
1.69379e-01	1.630e-02	Beta
1.81096e-01	3.520e-02	Beta
3.28604e-01	3.980e-02	Beta
3.96726e-01	1.880e-01	Beta
4.05188e-01	1.690e-01	Beta
4.31391e-01	4.781e-01	Beta
5.41983e-01	2.100e-02	Beta
6.93411e-01	2.600e-02	Beta
3.35562e-05	7.468e-01	Auger electron
1.09757e-04	3.316e-02	Auger electron
1.19128e-04	1.843e-01	Auger electron
2.60265e-04	4.465e-01	Auger electron
2.26893e-03	1.755e-01	Auger electron
2.60966e-03	3.254e-02	Auger electron
1.69094e-02	2.065e-02	Auger electron
1.06591e-01	1.442e-01	Conversion electron
1.26391e-01	1.283e-02	Conversion electron
1.26630e-01	2.622e-02	Conversion electron
1.26777e-01	2.761e-02	Conversion electron
1.29287e-01	1.316e-02	Conversion electron

 

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

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

 

 

 

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