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Radionuclide Dosimetric Data Sheets

Cadmium-119

Summary data

General

Classification

Isotope:  Cd-119
Atomic number (Z):  48
Mass number (A):  119
Neutron number (N):  71

Radioactive decay

Decay modes:  β-
Half-life:  2.69 [m]
Decay constant:  4.2946e-03 [1/s]
Daughters:  In-119m (90.1%), In-119 (9.91%)
Radioactive daughters:  In-119m, In-119

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.81858 [MeV]
Mean photon energy:  1.63799 [MeV]
Air kerma rate constant, Γ10:  5.344e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  5.344e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.312e-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-:  1.312e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  2.624e-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/Cd-119 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/Cd-119 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/Cd-119 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/Cd-119 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

8.12557e-06

7.482e-01

X-ray

2.39785e-02

1.090e-02

X-ray

2.41926e-02

2.044e-02

X-ray

1.34000e-01

6.624e-02

Gamma

2.92900e-01

3.680e-01

Gamma

3.43000e-01

1.693e-01

Gamma

4.46200e-01

1.840e-02

Gamma

7.33000e-01

1.582e-02

Gamma

7.84700e-01

1.030e-02

Gamma

8.36600e-01

1.325e-02

Gamma

9.41200e-01

3.165e-02

Gamma

1.01840e+00

1.214e-02

Gamma

1.05020e+00

6.550e-02

Gamma

1.11570e+00

1.251e-02

Gamma

1.28780e+00

2.686e-02

Gamma

1.31690e+00

8.832e-02

Gamma

1.31780e+00

1.104e-02

Gamma

1.33220e+00

1.067e-02

Gamma

1.47440e+00

1.325e-02

Gamma

1.60970e+00

1.093e-01

Gamma

1.71400e+00

2.282e-02

Gamma

1.73380e+00

8.096e-02

Gamma

1.76370e+00

9.200e-02

Gamma

1.95020e+00

1.619e-02

Gamma

2.02660e+00

1.398e-02

Gamma

2.05650e+00

2.208e-02

Gamma

2.35640e+00

5.888e-02

Gamma

2.54820e+00

1.730e-02

Gamma

3.22577e-01

1.679e-02

Beta

3.47489e-01

1.086e-02

Beta

4.01927e-01

4.938e-02

Beta

4.49997e-01

1.600e-02

Beta

4.62718e-01

1.975e-02

Beta

5.30497e-01

1.610e-01

Beta

5.43552e-01

1.422e-01

Beta

6.64727e-01

2.114e-02

Beta

7.29055e-01

2.015e-01

Beta

7.80801e-01

2.509e-02

Beta

7.97421e-01

1.491e-02

Beta

8.63592e-01

1.679e-02

Beta

1.12903e+00

2.074e-02

Beta

1.13180e+00

1.965e-02

Beta

1.17972e+00

2.074e-02

Beta

1.25136e+00

6.321e-02

Beta

1.31413e+00

2.272e-02

Beta

1.33764e+00

4.938e-02

Beta

1.47535e+00

9.877e-02

Beta

8.85705e-06

3.711e-01

Auger electron

3.35501e-05

1.300e-01

Auger electron

1.26097e-04

4.038e-02

Auger electron

3.70608e-04

9.241e-02

Auger electron

2.73129e-03

3.663e-02

Auger electron

1.06079e-01

2.552e-02

Conversion electron

2.64979e-01

1.021e-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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