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Radionuclide Dosimetric Data Sheets
Zinc-72
Summary data
General
Classification
Isotope: Zn-72
Atomic number (Z): 30
Mass number (A): 72
Neutron number (N): 42
Radioactive decay
Decay modes: β-
Half-life: 46.5 [h]
Decay constant: 4.1407e-06 [1/s]
Daughters: Ga-72 (100.0%)
Radioactive daughters: Ga-72
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.10214 [MeV]
Mean photon energy: 0.15194 [MeV]
Air kerma rate constant, Γ10: 9.119e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 9.119e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.636e-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-:
1.636e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.434e-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/Zn-72 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/Zn-72 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/Zn-72 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/Zn-72 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.57818e-05 |
6.171e+00 |
X-ray |
|
9.18060e-03 |
1.323e-01 |
X-ray |
|
9.20900e-03 |
2.572e-01 |
X-ray |
|
1.02200e-02 |
1.672e-02 |
X-ray |
|
1.02237e-02 |
3.266e-02 |
X-ray |
|
1.64000e-02 |
7.461e-02 |
Gamma |
|
7.94000e-02 |
1.741e-02 |
Gamma |
|
8.87000e-02 |
2.155e-02 |
Gamma |
|
1.02800e-01 |
2.321e-02 |
Gamma |
|
1.12100e-01 |
2.073e-02 |
Gamma |
|
1.44700e-01 |
8.290e-01 |
Gamma |
|
1.91500e-01 |
9.368e-02 |
Gamma |
|
7.23446e-02 |
1.466e-01 |
Beta |
|
8.78288e-02 |
8.510e-01 |
Beta |
|
1.17408e-05 |
1.698e+00 |
Auger electron |
|
5.44592e-05 |
1.553e+00 |
Auger electron |
|
9.42530e-05 |
2.276e-01 |
Auger electron |
|
1.00280e-03 |
1.235e+00 |
Auger electron |
|
1.05215e-03 |
1.908e-02 |
Auger electron |
|
6.06690e-03 |
8.391e-01 |
Conversion electron |
|
7.99646e-03 |
3.460e-01 |
Auger electron |
|
9.04875e-03 |
9.137e-02 |
Auger electron |
|
1.51093e-02 |
8.384e-02 |
Conversion electron |
|
1.62927e-02 |
1.397e-02 |
Conversion electron |
|
9.24669e-02 |
1.362e-02 |
Conversion electron |
|
1.34367e-01 |
1.579e-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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