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Radionuclide Dosimetric Data Sheets

Silver-117

Summary data

General

Classification

Isotope:  Ag-117
Atomic number (Z):  47
Mass number (A):  117
Neutron number (N):  70

Radioactive decay

Decay modes:  β-
Half-life:  73.6 [s]
Decay constant:  9.4178e-03 [1/s]
Daughters:  Cd-117 (84.7%), Cd-117m (15.3%)
Radioactive daughters:  Cd-117, Cd-117m

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  1.28131 [MeV]
Mean photon energy:  1.30275 [MeV]
Air kerma rate constant, Γ10:  4.079e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  4.079e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  2.053e-13 [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-:  2.053e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  2.087e-13 [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/Ag-117 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/Ag-117 Summary Spectrum.csv

Beta spectra (plot)

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/Ag-117 Beta 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/Ag-117 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

1.71484e-05

5.970e-01

X-ray

2.29571e-02

1.670e-02

X-ray

2.31527e-02

3.139e-02

X-ray

1.35400e-01

2.300e-01

Gamma

1.42100e-01

1.886e-02

Gamma

1.57100e-01

7.889e-02

Gamma

3.07200e-01

1.863e-02

Gamma

3.12300e-01

5.934e-02

Gamma

3.27200e-01

1.127e-02

Gamma

3.37700e-01

1.028e-01

Gamma

3.86800e-01

1.541e-02

Gamma

4.26200e-01

6.946e-02

Gamma

4.67700e-01

2.461e-02

Gamma

5.29900e-01

1.265e-02

Gamma

6.65100e-01

1.127e-02

Gamma

7.79500e-01

1.794e-02

Gamma

1.60900e+00

4.278e-02

Gamma

1.65760e+00

2.231e-02

Gamma

1.69620e+00

1.518e-02

Gamma

1.74880e+00

1.127e-02

Gamma

1.74880e+00

1.127e-02

Gamma

1.85440e+00

2.484e-02

Gamma

1.87760e+00

1.288e-02

Gamma

1.96380e+00

1.058e-02

Gamma

1.99550e+00

3.979e-02

Gamma

2.01330e+00

3.749e-02

Gamma

2.03540e+00

1.265e-02

Gamma

2.05670e+00

3.289e-02

Gamma

2.19210e+00

1.863e-02

Gamma

2.24590e+00

2.806e-02

Gamma

2.51410e+00

1.449e-02

Gamma

2.88830e+00

2.553e-02

Gamma

4.01889e-01

1.079e-02

Beta

4.63184e-01

2.552e-02

Beta

5.70723e-01

1.865e-02

Beta

6.27004e-01

1.963e-02

Beta

6.85797e-01

4.416e-02

Beta

6.98382e-01

1.079e-02

Beta

7.22248e-01

3.337e-02

Beta

7.71844e-01

9.421e-02

Beta

8.53389e-01

5.299e-02

Beta

8.61526e-01

6.084e-02

Beta

1.03974e+00

4.220e-02

Beta

1.15173e+00

1.079e-02

Beta

1.28986e+00

2.257e-02

Beta

1.47095e+00

2.355e-02

Beta

1.53761e+00

1.079e-02

Beta

1.59474e+00

6.771e-02

Beta

1.63659e+00

2.748e-02

Beta

1.65309e+00

1.865e-02

Beta

1.66460e+00

1.079e-02

Beta

1.73239e+00

1.472e-01

Beta

1.79657e+00

1.963e-01

Beta

3.67904e-05

2.106e-01

Auger electron

1.28317e-04

6.138e-02

Auger electron

1.65196e-04

1.231e-02

Auger electron

3.45248e-04

1.475e-01

Auger electron

2.60967e-03

5.709e-02

Auger electron

3.05245e-03

1.314e-02

Auger electron

1.08712e-01

4.023e-02

Conversion electron

1.30412e-01

1.920e-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

 

 

 

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