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Radionuclide Dosimetric Data Sheets

Silver-102m

Summary data

General

Classification

Isotope:  Ag-102m
Atomic number (Z):  47
Mass number (A):  102
Neutron number (N):  55

Radioactive decay

Decay modes:  β+, Electron capture, Internal transition
Half-life:  7.7 [m]
Decay constant:  1.5003e-03 [1/s]
Daughters:  Ag-102 (49.0%), Pd-102 (51.0%)
Radioactive daughters:  Ag-102

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.39638 [MeV]
Mean photon energy:  1.99329 [MeV]
Air kerma rate constant, Γ10:  5.137e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  6.487e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  6.351e-14 [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-:  6.351e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  3.194e-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-102m 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-102m 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-102m 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-102m Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

7.85943e-06

1.309e+00

X-ray

1.20671e-05

2.924e+00

X-ray

2.97344e-03

1.422e-02

X-ray

2.09884e-02

3.342e-02

X-ray

2.11504e-02

6.312e-02

X-ray

2.37942e-02

1.057e-02

X-ray

5.11000e-01

6.978e-01

Annihilation photon

5.56700e-01

4.260e-01

Gamma

7.19400e-01

4.526e-02

Gamma

9.77700e-01

2.662e-02

Gamma

1.33120e+00

2.928e-02

Gamma

1.38780e+00

1.597e-02

Gamma

1.46110e+00

4.526e-02

Gamma

1.53480e+00

2.662e-02

Gamma

1.58880e+00

1.198e-02

Gamma

1.69230e+00

2.263e-02

Gamma

1.83470e+00

9.850e-02

Gamma

1.92490e+00

1.065e-02

Gamma

2.01780e+00

2.795e-02

Gamma

2.05450e+00

6.656e-02

Gamma

2.15940e+00

5.058e-02

Gamma

2.31020e+00

1.331e-02

Gamma

2.61300e+00

3.328e-02

Gamma

2.68210e+00

1.730e-02

Gamma

2.71650e+00

1.864e-02

Gamma

2.72690e+00

1.331e-02

Gamma

3.23860e+00

4.925e-02

Gamma

3.39800e+00

1.331e-02

Gamma

3.40650e+00

1.597e-02

Gamma

6.26160e-01

2.457e-02

Positron

8.52905e-01

2.752e-02

Positron

8.62448e-01

4.325e-02

Positron

9.10529e-01

4.325e-02

Positron

9.27355e-01

1.867e-02

Positron

1.01157e+00

7.077e-02

Positron

1.07736e+00

1.769e-02

Positron

1.41071e+00

3.538e-02

Positron

1.87391e+00

5.897e-02

Positron

3.77336e-05

1.069e+00

Auger electron

3.81982e-05

4.933e-01

Auger electron

1.21681e-04

2.985e-02

Auger electron

1.24957e-04

3.037e-01

Auger electron

1.26003e-04

1.296e-01

Auger electron

1.35312e-04

3.163e-02

Auger electron

2.92897e-04

3.200e-01

Auger electron

3.18988e-04

7.251e-01

Auger electron

2.38225e-03

1.219e-01

Auger electron

2.45157e-03

2.727e-01

Auger electron

2.75692e-03

2.472e-02

Auger electron

2.85662e-03

5.869e-02

Auger electron

5.51660e-03

4.056e-02

Conversion electron

5.95000e-03

3.123e-01

Conversion electron

8.73147e-03

8.590e-02

Conversion electron

9.30000e-03

1.533e-02

Conversion electron

1.76856e-02

1.763e-02

Auger 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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