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Radionuclide Dosimetric Data Sheets

Tantalum-182

Summary data

General

Classification

Isotope:  Ta-182
Atomic number (Z):  73
Mass number (A):  182
Neutron number (N):  109

Radioactive decay

Decay modes:  β-
Half-life:  114.4 [d]
Decay constant:  7.0109e-08 [1/s]
Daughters:  W-182 (100.0%)
Radioactive daughters:  None

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.21045 [MeV]
Mean photon energy:  1.29183 [MeV]
Air kerma rate constant, Γ10:  4.545e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  4.545e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  3.372e-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-:  3.372e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  2.070e-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/Ta-182 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/Ta-182 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/Ta-182 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/Ta-182 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

3.12503e-05

8.775e+00

X-ray

1.77758e-03

3.232e-02

X-ray

8.32492e-03

1.131e-02

X-ray

8.38982e-03

9.976e-02

X-ray

9.69189e-03

7.959e-02

X-ray

9.95867e-03

1.769e-02

X-ray

1.13129e-02

1.481e-02

X-ray

5.81161e-02

1.043e-01

X-ray

5.94830e-02

1.812e-01

X-ray

6.57220e-02

2.925e-02

Gamma

6.71212e-02

1.948e-02

X-ray

6.74178e-02

3.764e-02

X-ray

6.77500e-02

4.122e-01

Gamma

8.46808e-02

2.645e-02

Gamma

1.00107e-01

1.410e-01

Gamma

1.13673e-01

1.885e-02

Gamma

1.52431e-01

6.928e-02

Gamma

1.56388e-01

2.642e-02

Gamma

1.79395e-01

3.082e-02

Gamma

1.98353e-01

1.441e-02

Gamma

2.22110e-01

7.486e-02

Gamma

2.29322e-01

3.630e-02

Gamma

2.64075e-01

3.605e-02

Gamma

1.00170e+00

2.066e-02

Gamma

1.12130e+00

3.490e-01

Gamma

1.18905e+00

1.623e-01

Gamma

1.22141e+00

2.698e-01

Gamma

1.23102e+00

1.144e-01

Gamma

1.25742e+00

1.488e-02

Gamma

1.28916e+00

1.349e-02

Gamma

7.22744e-02

2.952e-01

Beta

9.25638e-02

1.814e-02

Beta

1.29308e-01

2.066e-01

Beta

1.43610e-01

2.217e-02

Beta

1.57903e-01

4.000e-01

Beta

1.81453e-01

4.030e-02

Beta

2.53545e-05

1.741e+00

Auger electron

1.61476e-04

2.983e+00

Auger electron

3.15516e-04

1.042e-01

Auger electron

3.20006e-04

5.860e-01

Auger electron

6.93622e-04

1.434e-01

Auger electron

1.47322e-03

1.378e+00

Auger electron

1.65953e-03

8.867e-02

Auger electron

6.55970e-03

4.266e-01

Auger electron

8.31855e-03

1.638e-01

Auger electron

1.01078e-02

1.569e-02

Auger electron

1.49918e-02

1.600e-01

Conversion electron

3.04175e-02

1.229e-01

Conversion electron

4.39835e-02

4.909e-02

Conversion electron

4.71853e-02

1.095e-02

Auger electron

5.36450e-02

5.835e-02

Conversion electron

5.56730e-02

4.044e-02

Conversion electron

5.61770e-02

1.493e-02

Conversion electron

5.75440e-02

1.889e-02

Conversion electron

6.34508e-02

1.580e-02

Conversion electron

6.54788e-02

1.728e-02

Conversion electron

7.26038e-02

2.300e-02

Conversion electron

8.80295e-02

1.352e-02

Conversion electron

8.85335e-02

1.656e-01

Conversion electron

8.99005e-02

1.487e-01

Conversion electron

9.78353e-02

8.327e-02

Conversion electron

1.00107e-01

2.315e-02

Conversion electron

1.09706e-01

1.623e-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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