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Radionuclide Dosimetric Data Sheets

Antimony-116m

Summary data

General

Classification

Isotope:  Sb-116m
Atomic number (Z):  51
Mass number (A):  116
Neutron number (N):  65

Radioactive decay

Decay modes:  β+, Electron capture
Half-life:  60.3 [m]
Decay constant:  1.9158e-04 [1/s]
Daughters:  Sn-116 (100.0%)
Radioactive daughters:  None

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.14077 [MeV]
Mean photon energy:  3.10294 [MeV]
Air kerma rate constant, Γ10:  1.098e-16 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  1.162e-16 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  2.255e-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-:  2.255e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  4.971e-13 [Gy·kg/Bq·s]

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/Sb-116m 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/Sb-116m 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/Sb-116m Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

1.08542e-05

1.857e+01

X-ray

3.43219e-03

4.139e-02

X-ray

3.65722e-03

2.405e-02

X-ray

2.50232e-02

2.766e-01

X-ray

2.52572e-02

5.176e-01

X-ray

2.84307e-02

4.670e-02

X-ray

2.84736e-02

9.067e-02

X-ray

2.90882e-02

1.869e-02

X-ray

9.98020e-02

2.830e-01

Gamma

1.35511e-01

2.850e-01

Gamma

4.07351e-01

3.880e-01

Gamma

4.36666e-01

3.580e-02

Gamma

5.11000e-01

3.287e-01

Annihilation photon

5.42867e-01

4.810e-01

Gamma

8.44001e-01

1.120e-01

Gamma

9.72573e-01

7.420e-01

Gamma

1.07237e+00

2.550e-01

Gamma

1.29356e+00

1.000e+00

Gamma

3.85463e-01

1.112e-02

Positron

5.18027e-01

1.530e-01

Positron

1.13300e-05

9.181e+00

Auger electron

3.03800e-05

3.153e+00

Auger electron

1.24156e-04

1.017e+00

Auger electron

2.66878e-04

1.728e-01

Auger electron

3.96149e-04

2.307e+00

Auger electron

4.69555e-04

5.249e-02

Auger electron

2.84663e-03

9.102e-01

Auger electron

3.36307e-03

2.345e-01

Auger electron

3.89868e-03

1.554e-02

Auger electron

2.09334e-02

1.043e-01

Auger electron

2.44171e-02

4.442e-02

Auger electron

7.06180e-02

3.276e-01

Conversion electron

9.53617e-02

3.018e-02

Conversion electron

9.56412e-02

3.314e-02

Conversion electron

9.58752e-02

3.973e-02

Conversion electron

9.90917e-02

2.114e-02

Conversion electron

1.06327e-01

6.043e-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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