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Radionuclide Dosimetric Data Sheets

Rhenium-186

Isotope:  Re-186
Atomic number (Z):  75
Mass number (A):  186
Neutron number (N):  111

Decay modes:  β-, Electron capture
Half-life:  3.718 [d]
Decay constant:  2.1576e-06 [1/s]
Daughters:  Os-186 (92.5%), W-186 (7.47%)
Radioactive daughters:  Os-186

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.33624 [MeV]
Mean photon energy:  0.02079 [MeV]
Air kerma rate constant, Γ₁₀:  1.632e-18 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  1.632e-18 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  5.387e-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-:  5.387e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  3.331e-15 [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/Re-186 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/Re-186 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/Re-186 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/Re-186 Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
3.12573e-05	7.026e-01	X-ray
4.40965e-05	8.997e-01	X-ray
8.90609e-03	1.114e-02	X-ray
1.03795e-02	1.147e-02	X-ray
5.81161e-02	1.730e-02	X-ray
5.94830e-02	3.003e-02	X-ray
6.16420e-02	1.134e-02	X-ray
6.31890e-02	1.954e-02	X-ray
1.37157e-01	9.420e-02	Gamma
3.05981e-01	2.153e-01	Beta
3.59106e-01	7.094e-01	Beta
2.53758e-05	1.393e-01	Auger electron
2.95647e-05	1.749e-01	Auger electron
1.61312e-04	2.386e-01	Auger electron
1.63966e-04	3.001e-01	Auger electron
3.17557e-04	4.634e-02	Auger electron
3.37204e-04	6.024e-02	Auger electron
3.42927e-04	1.206e-02	Auger electron
6.76717e-04	1.119e-02	Auger electron
8.68490e-04	1.031e-02	Auger electron
1.47136e-03	1.110e-01	Auger electron
1.58629e-03	1.422e-01	Auger electron
1.78601e-03	1.119e-02	Auger electron
6.50895e-03	3.477e-02	Auger electron
6.97539e-03	4.467e-02	Auger electron
8.26461e-03	1.333e-02	Auger electron
8.87779e-03	1.778e-02	Auger electron
6.30910e-02	4.080e-02	Conversion electron
1.24733e-01	3.151e-02	Conversion electron
1.26280e-01	2.463e-02	Conversion electron
1.34705e-01	1.553e-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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