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Radionuclide Dosimetric Data Sheets
Hafnium-182m
Summary data
General
Classification
Isotope: Hf-182m
Atomic number (Z): 72
Mass number (A): 182
Neutron number (N): 110
Radioactive decay
Decay modes: β-, Internal transition
Half-life: 61.5 [m]
Decay constant: 1.8784e-04 [1/s]
Daughters: Ta-182 (49.1%), Hf-182 (42.0%), Ta-182m (8.93%)
Radioactive daughters: Ta-182, Hf-182, Ta-182m
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.24406 [MeV]
Mean photon energy: 0.91347 [MeV]
Air kerma rate constant, Γ10: 3.473e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.473e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 3.910e-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-:
3.910e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.464e-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/Hf-182m 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/Hf-182m 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/Hf-182m 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/Hf-182m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.94194e-05 |
4.292e+00 |
X-ray |
|
2.49642e-05 |
9.839e+00 |
X-ray |
|
1.63892e-03 |
1.298e-02 |
X-ray |
|
1.70652e-03 |
3.264e-02 |
X-ray |
|
7.88959e-03 |
4.244e-02 |
X-ray |
|
8.07690e-03 |
1.230e-02 |
X-ray |
|
8.13762e-03 |
1.085e-01 |
X-ray |
|
9.03751e-03 |
3.746e-02 |
X-ray |
|
9.36070e-03 |
6.280e-02 |
X-ray |
|
9.64848e-03 |
1.905e-02 |
X-ray |
|
1.09205e-02 |
1.155e-02 |
X-ray |
|
5.08000e-02 |
1.220e-01 |
Gamma |
|
5.47191e-02 |
4.735e-02 |
X-ray |
|
5.59237e-02 |
8.284e-02 |
X-ray |
|
5.64020e-02 |
1.806e-01 |
X-ray |
|
5.76858e-02 |
3.148e-01 |
X-ray |
|
5.91000e-02 |
4.350e-02 |
Gamma |
|
6.33831e-02 |
1.705e-02 |
X-ray |
|
6.51037e-02 |
3.369e-02 |
X-ray |
|
6.53809e-02 |
6.510e-02 |
X-ray |
|
6.71676e-02 |
1.476e-02 |
X-ray |
|
7.56000e-02 |
1.253e-02 |
Gamma |
|
9.78000e-02 |
8.506e-02 |
Gamma |
|
9.78000e-02 |
3.828e-02 |
Gamma |
|
1.14300e-01 |
6.160e-02 |
Gamma |
|
1.32800e-01 |
2.958e-02 |
Gamma |
|
1.43200e-01 |
4.280e-02 |
Gamma |
|
1.46800e-01 |
4.698e-02 |
Gamma |
|
1.71500e-01 |
3.828e-02 |
Gamma |
|
1.73400e-01 |
2.784e-02 |
Gamma |
|
1.78700e-01 |
1.079e-02 |
Gamma |
|
1.85000e-01 |
2.158e-02 |
Gamma |
|
2.24400e-01 |
3.486e-01 |
Gamma |
|
3.39600e-01 |
5.638e-02 |
Gamma |
|
3.44100e-01 |
4.218e-01 |
Gamma |
|
3.73880e-01 |
1.810e-02 |
Gamma |
|
3.86270e-01 |
2.227e-02 |
Gamma |
|
4.55800e-01 |
1.848e-01 |
Gamma |
|
4.83670e-01 |
2.018e-02 |
Gamma |
|
5.06600e-01 |
2.161e-01 |
Gamma |
|
5.38850e-01 |
1.670e-02 |
Gamma |
|
6.03200e-01 |
5.220e-02 |
Gamma |
|
6.13300e-01 |
1.148e-02 |
Gamma |
|
6.27400e-01 |
1.044e-02 |
Gamma |
|
7.99600e-01 |
9.396e-02 |
Gamma |
|
8.23200e-01 |
2.575e-02 |
Gamma |
|
9.42800e-01 |
1.879e-01 |
Gamma |
|
5.69482e-02 |
1.512e-02 |
Beta |
|
1.26100e-01 |
4.039e-01 |
Beta |
|
2.45847e-01 |
6.480e-02 |
Beta |
|
2.92590e-01 |
9.613e-02 |
Beta |
|
1.07568e-05 |
3.734e-01 |
Auger electron |
|
1.19877e-05 |
8.603e-01 |
Auger electron |
|
2.44609e-05 |
5.293e-01 |
Auger electron |
|
2.73582e-05 |
1.218e+00 |
Auger electron |
|
1.59934e-04 |
1.496e+00 |
Auger electron |
|
1.60417e-04 |
3.345e+00 |
Auger electron |
|
2.82607e-04 |
4.728e-02 |
Auger electron |
|
3.01037e-04 |
1.102e-01 |
Auger electron |
|
3.03825e-04 |
2.549e-01 |
Auger electron |
|
3.12221e-04 |
6.309e-01 |
Auger electron |
|
5.86261e-04 |
2.170e-01 |
Auger electron |
|
6.59573e-04 |
5.600e-02 |
Auger electron |
|
1.36585e-03 |
6.502e-01 |
Auger electron |
|
1.41715e-03 |
1.509e+00 |
Auger electron |
|
1.54517e-03 |
3.431e-02 |
Auger electron |
|
1.59797e-03 |
8.746e-02 |
Auger electron |
|
4.84400e-03 |
5.117e-02 |
Conversion electron |
|
6.20409e-03 |
2.099e-01 |
Auger electron |
|
6.33988e-03 |
4.652e-01 |
Auger electron |
|
6.62080e-03 |
3.216e-02 |
Conversion electron |
|
7.82529e-03 |
7.795e-02 |
Auger electron |
|
8.02966e-03 |
1.755e-01 |
Auger electron |
|
8.03500e-03 |
1.062e-01 |
Conversion electron |
|
9.75099e-03 |
1.661e-02 |
Auger electron |
|
1.43159e-02 |
2.269e-02 |
Conversion electron |
|
3.02350e-02 |
1.378e-01 |
Conversion electron |
|
3.23180e-02 |
8.427e-02 |
Conversion electron |
|
3.95550e-02 |
1.896e-02 |
Conversion electron |
|
4.12417e-02 |
1.181e-02 |
Conversion electron |
|
4.58458e-02 |
1.923e-02 |
Auger electron |
|
4.67350e-02 |
1.582e-01 |
Conversion electron |
|
4.74440e-02 |
1.084e-01 |
Conversion electron |
|
4.79370e-02 |
1.001e-02 |
Conversion electron |
|
5.21350e-02 |
1.178e-02 |
Conversion electron |
|
5.47234e-02 |
1.002e-02 |
Auger electron |
|
5.69159e-02 |
2.729e-02 |
Conversion electron |
|
6.39440e-02 |
1.526e-02 |
Conversion electron |
|
6.52350e-02 |
4.959e-02 |
Conversion electron |
|
7.56350e-02 |
4.624e-02 |
Conversion electron |
|
7.92350e-02 |
5.939e-02 |
Conversion electron |
|
8.61440e-02 |
1.957e-02 |
Conversion electron |
|
8.70370e-02 |
9.352e-02 |
Conversion electron |
|
8.82417e-02 |
8.668e-02 |
Conversion electron |
|
9.57010e-02 |
4.727e-02 |
Conversion electron |
|
9.78000e-02 |
1.281e-02 |
Conversion electron |
|
1.02644e-01 |
2.272e-02 |
Conversion electron |
|
1.03935e-01 |
3.123e-02 |
Conversion electron |
|
1.17435e-01 |
1.363e-02 |
Conversion electron |
|
1.58918e-01 |
4.224e-02 |
Conversion electron |
|
1.73837e-01 |
2.523e-02 |
Conversion electron |
|
1.75121e-01 |
1.509e-02 |
Conversion electron |
|
1.82816e-01 |
1.109e-02 |
Conversion electron |
|
2.78618e-01 |
1.617e-02 |
Conversion electron |
|
4.41118e-01 |
2.591e-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
MIRDsoft MIRDspecs version 20250101 (www.mirdsoft.org)
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