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Radionuclide Dosimetric Data Sheets

Ruthenium-95

Isotope:  Ru-95
Atomic number (Z):  44
Mass number (A):  95
Neutron number (N):  51

Decay modes:  β+, Electron capture
Half-life:  1.643 [h]
Decay constant:  1.1719e-04 [1/s]
Daughters:  Tc-95 (97.4%), Tc-95m (2.61%)
Radioactive daughters:  Tc-95, Tc-95m

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.08308 [MeV]
Mean photon energy:  1.24186 [MeV]
Air kerma rate constant, Γ₁₀:  4.782e-17 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  5.325e-17 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  1.331e-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-:  1.331e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  1.990e-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-95 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-95 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-95 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-95 Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
7.87644e-06	8.215e+00	X-ray
2.41453e-03	1.940e-02	X-ray
1.82141e-02	1.703e-01	X-ray
1.83344e-02	3.237e-01	X-ray
2.05668e-02	2.677e-02	X-ray
2.05871e-02	5.210e-02	X-ray
2.90380e-01	3.698e-02	Gamma
3.01010e-01	2.112e-02	Gamma
3.36400e-01	7.019e-01	Gamma
5.11000e-01	2.807e-01	Annihilation photon
5.51620e-01	1.705e-02	Gamma
5.91420e-01	1.190e-02	Gamma
6.26830e-01	1.785e-01	Gamma
6.52810e-01	1.021e-02	Gamma
7.48500e-01	1.616e-02	Gamma
8.06280e-01	4.055e-02	Gamma
8.42160e-01	1.269e-02	Gamma
8.89000e-01	1.913e-02	Gamma
1.05068e+00	2.607e-02	Gamma
1.09680e+00	2.102e-01	Gamma
1.17870e+00	5.155e-02	Gamma
1.41063e+00	2.488e-02	Gamma
1.45932e+00	2.102e-02	Gamma
2.32450e+00	1.408e-02	Gamma
4.08328e-01	1.296e-02	Positron
5.36538e-01	1.266e-01	Positron
2.93992e-05	3.591e+00	Auger electron
1.06665e-04	1.708e-01	Auger electron
1.10210e-04	7.494e-01	Auger electron
2.03926e-04	1.818e+00	Auger electron
2.47566e-04	1.525e-02	Auger electron
2.05400e-03	7.159e-01	Auger electron
2.33288e-03	1.115e-01	Auger electron
1.54229e-02	1.179e-01	Auger electron
1.78238e-02	4.455e-02	Auger 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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