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Radionuclide Dosimetric Data Sheets

Tin-113m

Summary data

General

Classification

Isotope:  Sn-113m
Atomic number (Z):  50
Mass number (A):  113
Neutron number (N):  63

Radioactive decay

Decay modes:  Electron capture, Internal transition
Half-life:  21.4 [m]
Decay constant:  5.3983e-04 [1/s]
Daughters:  Sn-113 (91.1%), In-113 (8.9%)
Radioactive daughters:  Sn-113

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.05879 [MeV]
Mean photon energy:  0.01368 [MeV]
Air kerma rate constant, Γ10:  4.135e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  4.135e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  9.419e-15 [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-:  9.419e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  2.192e-15 [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/Sn-113m 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/Sn-113m Summary 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/Sn-113m Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

8.12530e-06

1.255e+00

X-ray

1.08546e-05

1.189e+01

X-ray

3.43219e-03

2.637e-02

X-ray

3.65722e-03

1.376e-02

X-ray

2.39785e-02

1.875e-02

X-ray

2.41926e-02

3.517e-02

X-ray

2.50232e-02

1.264e-01

X-ray

2.52572e-02

2.365e-01

X-ray

2.84307e-02

2.134e-02

X-ray

2.84736e-02

4.144e-02

X-ray

8.85911e-06

6.224e-01

Auger electron

1.13309e-05

5.877e+00

Auger electron

3.03406e-05

2.030e+00

Auger electron

3.35249e-05

2.188e-01

Auger electron

1.23493e-04

6.597e-01

Auger electron

1.25691e-04

6.817e-02

Auger electron

2.63038e-04

1.201e-02

Auger electron

2.79409e-04

1.200e-01

Auger electron

3.70864e-04

1.540e-01

Auger electron

3.96521e-04

1.463e+00

Auger electron

4.70938e-04

3.341e-02

Auger electron

2.73443e-03

6.101e-02

Auger electron

2.84823e-03

5.734e-01

Auger electron

3.21475e-03

1.492e-02

Auger electron

3.36546e-03

1.478e-01

Auger electron

2.09334e-02

4.767e-02

Auger electron

2.44171e-02

2.030e-02

Auger electron

4.82050e-02

5.094e-01

Conversion electron

7.29487e-02

1.232e-01

Conversion electron

7.32282e-02

5.216e-02

Conversion electron

7.34622e-02

1.353e-01

Conversion electron

7.66787e-02

6.898e-02

Conversion electron

7.73890e-02

1.429e-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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