<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Copper-64
Summary data
General
Classification
Isotope: Cu-64
Atomic number (Z): 29
Mass number (A): 64
Neutron number (N): 35
Radioactive decay
Decay modes: β-, β+, Electron capture
Half-life: 12.7 [h]
Decay constant: 1.5161e-05 [1/s]
Daughters: Ni-64 (61.0%), Zn-64 (39.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.12475 [MeV]
Mean photon energy: 0.18548 [MeV]
Air kerma rate constant, Γ10: 2.135e-19 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 6.953e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.999e-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-:
1.999e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.972e-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/Cu-64 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/Cu-64 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/Cu-64 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/Cu-64 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.44988e-05 |
2.243e+00 |
X-ray |
|
7.41782e-03 |
4.677e-02 |
X-ray |
|
7.43578e-03 |
9.133e-02 |
X-ray |
|
8.22459e-03 |
1.121e-02 |
X-ray |
|
5.11000e-01 |
3.482e-01 |
Annihilation photon |
|
1.90428e-01 |
3.900e-01 |
Beta |
|
2.78220e-01 |
1.741e-01 |
Positron |
|
4.78726e-05 |
8.772e-01 |
Auger electron |
|
7.88419e-05 |
1.116e-01 |
Auger electron |
|
7.72710e-04 |
5.811e-01 |
Auger electron |
|
6.49788e-03 |
1.826e-01 |
Auger electron |
|
7.31362e-03 |
4.566e-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
