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Radionuclide Dosimetric Data Sheets
Zirconium-89
Summary data
General
Classification
Isotope: Zr-89
Atomic number (Z): 40
Mass number (A): 89
Neutron number (N): 49
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 78.41 [h]
Decay constant: 2.4556e-06 [1/s]
Daughters: Y-89 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.10194 [MeV]
Mean photon energy: 1.15808 [MeV]
Air kerma rate constant, Γ10: 4.524e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 5.405e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.633e-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-:
1.633e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.855e-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/Zr-89 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/Zr-89 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/Zr-89 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/Zr-89 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
5.29809e-06 |
1.022e+01 |
X-ray |
|
1.91499e-03 |
1.281e-02 |
X-ray |
|
1.48403e-02 |
1.409e-01 |
X-ray |
|
1.49185e-02 |
2.699e-01 |
X-ray |
|
1.66877e-02 |
2.091e-02 |
X-ray |
|
1.67001e-02 |
4.075e-02 |
X-ray |
|
5.11000e-01 |
4.548e-01 |
Annihilation photon |
|
9.09150e-01 |
9.904e-01 |
Gamma |
|
3.95489e-01 |
2.274e-01 |
Positron |
|
2.02938e-05 |
5.684e+00 |
Auger electron |
|
9.45921e-05 |
1.742e+00 |
Auger electron |
|
9.61255e-05 |
7.776e-01 |
Auger electron |
|
1.00862e-04 |
1.618e-01 |
Auger electron |
|
1.31751e-04 |
6.409e-02 |
Auger electron |
|
1.66232e-03 |
7.319e-01 |
Auger electron |
|
1.82714e-03 |
7.325e-02 |
Auger electron |
|
1.26657e-02 |
1.449e-01 |
Auger electron |
|
1.45497e-02 |
5.038e-02 |
Auger 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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