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Radionuclide Dosimetric Data Sheets

Mercury-207

Summary data

General

Classification

Isotope:  Hg-207
Atomic number (Z):  80
Mass number (A):  207
Neutron number (N):  127

Radioactive decay

Decay modes:  β-
Half-life:  2.9 [m]
Decay constant:  3.9836e-03 [1/s]
Daughters:  Tl-207 (100.0%)
Radioactive daughters:  Tl-207

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.82623 [MeV]
Mean photon energy:  2.66136 [MeV]
Air kerma rate constant, Γ10:  9.227e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  9.227e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.324e-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-:  1.324e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  4.264e-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/Hg-207 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/Hg-207 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/Hg-207 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

2.07376e-05

3.979e+00

X-ray

2.30026e-03

1.401e-02

X-ray

1.02661e-02

4.022e-02

X-ray

1.22523e-02

2.593e-02

X-ray

7.10519e-02

7.029e-02

X-ray

7.31380e-02

1.186e-01

X-ray

8.23884e-02

1.316e-02

X-ray

8.28534e-02

2.547e-02

X-ray

3.10300e-01

1.212e-02

Gamma

3.51000e-01

7.676e-01

Gamma

4.46300e-01

1.313e-02

Gamma

9.97100e-01

6.868e-01

Gamma

1.33170e+00

4.545e-02

Gamma

1.34810e+00

3.030e-02

Gamma

1.56390e+00

1.515e-01

Gamma

1.59030e+00

2.020e-02

Gamma

1.63710e+00

2.979e-01

Gamma

1.75630e+00

1.616e-01

Gamma

1.79490e+00

7.474e-02

Gamma

1.94750e+00

3.838e-02

Gamma

1.98740e+00

5.050e-02

Gamma

2.00950e+00

2.424e-02

Gamma

2.63410e+00

3.535e-02

Gamma

5.11257e-01

4.386e-02

Beta

5.20436e-01

5.482e-02

Beta

5.36728e-01

5.482e-02

Beta

5.46081e-01

3.289e-02

Beta

5.99390e-01

7.675e-02

Beta

6.15357e-01

1.754e-01

Beta

6.64887e-01

3.509e-01

Beta

6.95593e-01

1.535e-01

Beta

1.18755e+00

3.289e-02

Beta

1.36835e+00

2.193e-02

Beta

4.30140e-05

8.737e-01

Auger electron

7.57149e-05

1.304e+00

Auger electron

1.74481e-04

6.835e-01

Auger electron

4.17313e-04

1.485e-01

Auger electron

9.04684e-04

4.596e-02

Auger electron

1.85884e-03

3.604e-01

Auger electron

2.10423e-03

4.242e-02

Auger electron

7.84414e-03

1.076e-01

Auger electron

1.01350e-02

4.679e-02

Auger electron

2.65202e-01

1.612e-01

Conversion electron

3.35670e-01

2.455e-02

Conversion electron

9.11302e-01

7.764e-02

Conversion electron

9.81770e-01

1.533e-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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