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Radionuclide Dosimetric Data Sheets

Bismuth-215

Isotope:  Bi-215
Atomic number (Z):  83
Mass number (A):  215
Neutron number (N):  132

Decay modes:  β-
Half-life:  7.6 [m]
Decay constant:  1.5201e-03 [1/s]
Daughters:  Po-215 (100.0%)
Radioactive daughters:  Po-215

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.66935 [MeV]
Mean photon energy:  0.25343 [MeV]
Air kerma rate constant, Γ₁₀:  1.185e-17 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  1.185e-17 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  1.072e-13 [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-:  1.072e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  4.060e-14 [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/Bi-215 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/Bi-215 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/Bi-215 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/Bi-215 Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
3.84109e-05	2.669e+00	X-ray
2.54170e-03	1.135e-02	X-ray
1.11319e-02	3.093e-02	X-ray
1.34935e-02	2.009e-02	X-ray
7.71271e-02	5.174e-02	X-ray
7.96070e-02	8.613e-02	X-ray
9.01425e-02	1.876e-02	X-ray
2.71100e-01	2.900e-02	Gamma
2.93500e-01	3.520e-01	Gamma
5.17500e-01	1.500e-02	Gamma
5.64400e-01	1.000e-02	Gamma
6.09000e-01	1.000e-02	Gamma
7.76900e-01	1.200e-02	Gamma
1.10450e+00	2.200e-02	Gamma
1.39920e+00	1.200e-02	Gamma
2.46561e-01	6.237e-02	Beta
2.84831e-01	4.527e-02	Beta
3.66809e-01	1.710e-02	Beta
4.61543e-01	3.320e-02	Beta
5.24747e-01	1.107e-02	Beta
5.52496e-01	1.509e-02	Beta
6.16252e-01	1.006e-02	Beta
6.81957e-01	7.746e-01	Beta
6.91247e-01	2.213e-02	Beta
3.94532e-05	6.373e-01	Auger electron
9.70291e-05	8.313e-01	Auger electron
1.74596e-04	4.470e-01	Auger electron
4.32108e-04	1.027e-01	Auger electron
1.11074e-03	3.158e-02	Auger electron
2.01393e-03	2.432e-01	Auger electron
2.30683e-03	3.346e-02	Auger electron
8.44487e-03	7.078e-02	Auger electron
1.09944e-02	3.232e-02	Auger electron
1.77676e-01	1.668e-02	Conversion electron
2.00076e-01	1.630e-01	Conversion electron
2.76582e-01	2.568e-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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