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Radionuclide Dosimetric Data Sheets

Lead-200

Summary data

General

Classification

Isotope:  Pb-200
Atomic number (Z):  82
Mass number (A):  200
Neutron number (N):  118

Radioactive decay

Decay modes:  Electron capture
Half-life:  21.5 [h]
Decay constant:  8.9554e-06 [1/s]
Daughters:  Tl-200 (100.0%)
Radioactive daughters:  Tl-200

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.09965 [MeV]
Mean photon energy:  0.20864 [MeV]
Air kerma rate constant, Γ10:  3.012e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  3.012e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.597e-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-:  1.597e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  3.343e-14 [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/Pb-200 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/Pb-200 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/Pb-200 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

2.07398e-05

2.160e+01

X-ray

2.30182e-03

7.572e-02

X-ray

8.98130e-03

1.344e-02

X-ray

1.01663e-02

2.349e-02

X-ray

1.02661e-02

2.069e-01

X-ray

1.22523e-02

1.543e-01

X-ray

1.22749e-02

3.941e-02

X-ray

1.43397e-02

3.116e-02

X-ray

7.10519e-02

3.038e-01

X-ray

7.31380e-02

5.126e-01

X-ray

8.23883e-02

5.687e-02

X-ray

8.28534e-02

1.101e-01

X-ray

8.50837e-02

1.348e-02

X-ray

8.51979e-02

2.645e-02

X-ray

1.42290e-01

3.164e-02

Gamma

1.47620e-01

3.773e-01

Gamma

2.35620e-01

4.296e-02

Gamma

2.57170e-01

4.462e-02

Gamma

2.68380e-01

3.963e-02

Gamma

2.89110e-01

1.066e-02

Gamma

2.89940e-01

1.732e-02

Gamma

4.50530e-01

3.330e-02

Gamma

4.30294e-05

4.745e+00

Auger electron

7.58506e-05

7.077e+00

Auger electron

1.74707e-04

3.717e+00

Auger electron

4.20627e-04

8.164e-01

Auger electron

9.25327e-04

2.484e-01

Auger electron

1.86097e-03

1.946e+00

Auger electron

2.10746e-03

2.293e-01

Auger electron

2.47993e-03

1.148e-02

Auger electron

7.89217e-03

5.757e-01

Auger electron

1.01861e-02

2.506e-01

Auger electron

1.25089e-02

2.624e-02

Auger electron

2.37420e-02

2.762e-02

Conversion electron

5.64920e-02

8.572e-02

Conversion electron

5.72241e-02

2.633e-02

Auger electron

6.18220e-02

1.251e-01

Conversion electron

6.88063e-02

1.433e-02

Auger electron

1.26960e-01

1.324e-02

Conversion electron

1.32290e-01

1.728e-02

Conversion electron

1.32874e-01

1.422e-01

Conversion electron

1.34960e-01

9.911e-02

Conversion electron

1.44675e-01

6.790e-02

Conversion electron

1.47620e-01

2.072e-02

Conversion electron

1.49822e-01

2.831e-02

Conversion electron

1.71372e-01

1.273e-02

Conversion electron

1.82582e-01

1.824e-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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