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Radionuclide Dosimetric Data Sheets
Krypton-76
Summary data
General
Classification
Isotope: Kr-76
Atomic number (Z): 36
Mass number (A): 76
Neutron number (N): 40
Radioactive decay
Decay modes: Electron capture
Half-life: 14.8 [h]
Decay constant: 1.3010e-05 [1/s]
Daughters: Br-76 (99.2%), Br-76m (0.811%)
Radioactive daughters: Br-76, Br-76m
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.01539 [MeV]
Mean photon energy: 0.42764 [MeV]
Air kerma rate constant, Γ10: 4.256e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.256e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.466e-15 [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-:
2.466e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 6.852e-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/Kr-76 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/Kr-76 Summary 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/Kr-76 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.75892e-05 |
8.768e+00 |
X-ray |
|
1.47515e-03 |
1.325e-02 |
X-ray |
|
1.18329e-02 |
1.950e-01 |
X-ray |
|
1.18814e-02 |
3.766e-01 |
X-ray |
|
1.32432e-02 |
2.690e-02 |
X-ray |
|
1.32502e-02 |
5.249e-02 |
X-ray |
|
4.55000e-02 |
1.923e-01 |
Gamma |
|
1.03300e-01 |
3.315e-02 |
Gamma |
|
1.34900e-01 |
2.535e-02 |
Gamma |
|
1.36400e-01 |
1.053e-02 |
Gamma |
|
1.99800e-01 |
1.170e-02 |
Gamma |
|
2.52000e-01 |
6.240e-02 |
Gamma |
|
2.70200e-01 |
2.106e-01 |
Gamma |
|
2.71600e-01 |
4.290e-02 |
Gamma |
|
3.09800e-01 |
2.574e-02 |
Gamma |
|
3.15700e-01 |
3.900e-01 |
Gamma |
|
3.55300e-01 |
4.680e-02 |
Gamma |
|
4.06500e-01 |
1.209e-01 |
Gamma |
|
4.51900e-01 |
9.750e-02 |
Gamma |
|
5.52500e-01 |
1.677e-02 |
Gamma |
|
5.82500e-01 |
1.131e-02 |
Gamma |
|
4.38599e-05 |
3.946e+00 |
Auger electron |
|
5.77216e-05 |
1.526e+00 |
Auger electron |
|
9.07973e-05 |
2.723e-01 |
Auger electron |
|
1.32089e-03 |
1.310e+00 |
Auger electron |
|
1.41187e-03 |
7.774e-02 |
Auger electron |
|
1.02029e-02 |
3.120e-01 |
Auger electron |
|
1.16354e-02 |
9.545e-02 |
Auger electron |
|
3.20650e-02 |
1.817e-01 |
Conversion electron |
|
4.37308e-02 |
1.905e-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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