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Radionuclide Dosimetric Data Sheets
Niobium-88
Summary data
General
Classification
Isotope: Nb-88
Atomic number (Z): 41
Mass number (A): 88
Neutron number (N): 47
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 14.5 [m]
Decay constant: 7.9672e-04 [1/s]
Daughters: Zr-88 (100.0%)
Radioactive daughters: Zr-88
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.45549 [MeV]
Mean photon energy: 4.21883 [MeV]
Air kerma rate constant, Γ10: 1.260e-16 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.621e-16 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.332e-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-:
2.332e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 6.759e-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/Nb-88 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/Nb-88 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/Nb-88 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/Nb-88 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
6.52418e-06 |
8.463e+00 |
X-ray |
|
2.03430e-03 |
1.273e-02 |
X-ray |
|
1.56498e-02 |
1.222e-01 |
X-ray |
|
1.57372e-02 |
2.339e-01 |
X-ray |
|
1.76171e-02 |
1.844e-02 |
X-ray |
|
1.76312e-02 |
3.592e-02 |
X-ray |
|
7.70000e-02 |
2.240e-01 |
Gamma |
|
2.71800e-01 |
3.010e-01 |
Gamma |
|
3.99400e-01 |
3.180e-01 |
Gamma |
|
5.02900e-01 |
6.000e-01 |
Gamma |
|
5.11000e-01 |
1.864e+00 |
Annihilation photon |
|
6.71200e-01 |
6.400e-01 |
Gamma |
|
1.05710e+00 |
1.000e+00 |
Gamma |
|
1.07410e+00 |
1.770e-02 |
Gamma |
|
1.08260e+00 |
1.030e+00 |
Gamma |
|
9.20426e-01 |
1.331e-02 |
Positron |
|
1.42076e+00 |
5.206e-01 |
Positron |
|
1.65941e+00 |
2.410e-01 |
Positron |
|
1.70433e+00 |
5.785e-02 |
Positron |
|
2.01757e+00 |
4.821e-02 |
Positron |
|
2.22407e-05 |
4.486e+00 |
Auger electron |
|
9.87162e-05 |
6.738e-01 |
Auger electron |
|
1.03879e-04 |
1.248e-01 |
Auger electron |
|
1.17831e-04 |
1.537e+00 |
Auger electron |
|
1.58000e-04 |
4.535e-02 |
Auger electron |
|
1.75372e-03 |
6.434e-01 |
Auger electron |
|
1.94405e-03 |
7.206e-02 |
Auger electron |
|
1.33271e-02 |
1.135e-01 |
Auger electron |
|
1.53342e-02 |
4.042e-02 |
Auger electron |
|
5.90380e-02 |
5.113e-01 |
Conversion electron |
|
7.44854e-02 |
4.556e-02 |
Conversion electron |
|
7.46878e-02 |
2.761e-02 |
Conversion electron |
|
7.47752e-02 |
3.828e-02 |
Conversion electron |
|
7.66691e-02 |
1.992e-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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