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Radionuclide Dosimetric Data Sheets

Mercury-193

Summary data

General

Classification

Isotope:  Hg-193
Atomic number (Z):  80
Mass number (A):  193
Neutron number (N):  113

Radioactive decay

Decay modes:  β+, Electron capture
Half-life:  3.8 [h]
Decay constant:  5.0669e-05 [1/s]
Daughters:  Au-193 (96.5%), Au-193m (3.54%)
Radioactive daughters:  Au-193, Au-193m

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.07401 [MeV]
Mean photon energy:  0.83771 [MeV]
Air kerma rate constant, Γ10:  3.914e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  3.946e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.186e-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-:  1.186e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  1.342e-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/Hg-193 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/Hg-193 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-193 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-193 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

1.11010e-05

2.328e+01

X-ray

2.14583e-03

7.067e-02

X-ray

8.52062e-03

1.331e-02

X-ray

9.62130e-03

2.317e-02

X-ray

9.70979e-03

2.041e-01

X-ray

1.14753e-02

1.411e-01

X-ray

1.15870e-02

3.813e-02

X-ray

1.34225e-02

2.786e-02

X-ray

6.71839e-02

2.775e-01

X-ray

6.90380e-02

4.722e-01

X-ray

7.78158e-02

5.194e-02

X-ray

7.82261e-02

1.005e-01

X-ray

8.03237e-02

1.218e-02

X-ray

8.04227e-02

2.380e-02

X-ray

1.86560e-01

1.505e-01

Gamma

2.18070e-01

2.760e-02

Gamma

2.24810e-01

1.035e-02

Gamma

2.58000e-01

6.624e-02

Gamma

2.89000e-01

1.104e-02

Gamma

3.81600e-01

1.587e-01

Gamma

5.11000e-01

1.634e-02

Annihilation photon

5.80970e-01

4.140e-02

Gamma

7.89210e-01

4.485e-02

Gamma

8.27810e-01

3.933e-02

Gamma

8.61110e-01

1.242e-01

Gamma

1.04050e+00

2.277e-02

Gamma

1.08070e+00

3.657e-02

Gamma

1.11884e+00

8.004e-02

Gamma

1.27638e+00

2.622e-02

Gamma

1.60340e+00

2.070e-02

Gamma

1.60340e+00

2.070e-02

Gamma

1.81560e+00

2.553e-02

Gamma

1.86220e+00

1.449e-02

Gamma

1.97660e+00

1.725e-02

Gamma

4.01457e-05

5.117e+00

Auger electron

6.41230e-05

7.849e+00

Auger electron

1.74493e-04

4.149e+00

Auger electron

4.14750e-04

8.003e-01

Auger electron

7.74834e-04

2.744e-01

Auger electron

1.75499e-03

2.076e+00

Auger electron

1.97574e-03

2.149e-01

Auger electron

2.31373e-03

1.057e-02

Auger electron

7.47970e-03

6.222e-01

Auger electron

9.60971e-03

2.616e-01

Auger electron

1.17686e-02

2.667e-02

Auger electron

2.39040e-02

8.045e-02

Conversion electron

2.44640e-02

1.555e-01

Conversion electron

2.63180e-02

1.600e-01

Conversion electron

3.55060e-02

9.997e-02

Conversion electron

3.82400e-02

2.961e-02

Conversion electron

5.42437e-02

2.526e-02

Auger electron

6.50992e-02

1.360e-02

Auger electron

1.05600e-01

1.524e-01

Conversion electron

1.72224e-01

2.286e-02

Conversion electron

1.77040e-01

2.237e-02

Conversion electron

3.00640e-01

1.305e-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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