<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Zinc-61
Summary data
General
Classification
Isotope: Zn-61
Atomic number (Z): 30
Mass number (A): 61
Neutron number (N): 31
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 89.1 [s]
Decay constant: 7.7794e-03 [1/s]
Daughters: Cu-61 (100.0%)
Radioactive daughters: Cu-61
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.8571 [MeV]
Mean photon energy: 1.5327 [MeV]
Air kerma rate constant, Γ10: 1.695e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 5.506e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.975e-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-:
2.975e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.456e-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/Zn-61 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-61 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-61 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-61 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
9.87231e-06 |
7.764e-02 |
X-ray |
|
4.75000e-01 |
1.685e-01 |
Gamma |
|
5.11000e-01 |
1.969e+00 |
Annihilation photon |
|
6.90300e-01 |
1.872e-02 |
Gamma |
|
9.70000e-01 |
2.574e-02 |
Gamma |
|
1.18530e+00 |
1.724e-02 |
Gamma |
|
1.39460e+00 |
1.217e-02 |
Gamma |
|
1.66040e+00 |
7.800e-02 |
Gamma |
|
1.99740e+00 |
1.178e-02 |
Gamma |
|
7.99451e-01 |
1.610e-02 |
Positron |
|
8.49651e-01 |
1.400e-02 |
Positron |
|
9.47593e-01 |
1.320e-02 |
Positron |
|
1.00085e+00 |
1.310e-02 |
Positron |
|
1.32931e+00 |
1.100e-01 |
Positron |
|
1.89685e+00 |
1.100e-01 |
Positron |
|
2.12681e+00 |
6.562e-01 |
Positron |
|
5.68338e-05 |
2.893e-02 |
Auger electron |
|
8.56061e-04 |
2.090e-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)
<= Return to MIRDspec isotope database
