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Radionuclide Dosimetric Data Sheets
Niobium-95m
Summary data
General
Classification
Isotope: Nb-95m
Atomic number (Z): 41
Mass number (A): 95
Neutron number (N): 54
Radioactive decay
Decay modes: β-, Internal transition
Half-life: 3.61 [d]
Decay constant: 2.2223e-06 [1/s]
Daughters: Nb-95 (94.4%), Mo-95 (5.6%)
Radioactive daughters: Nb-95
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.17998 [MeV]
Mean photon energy: 0.06967 [MeV]
Air kerma rate constant, Γ10: 1.056e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.056e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.884e-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-:
2.884e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.116e-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/Nb-95m 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-95m 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-95m 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-95m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
5.83034e-06 |
7.526e+00 |
X-ray |
|
6.84806e-06 |
1.206e-02 |
X-ray |
|
2.15729e-03 |
1.341e-02 |
X-ray |
|
1.64814e-02 |
1.217e-01 |
X-ray |
|
1.65789e-02 |
2.324e-01 |
X-ray |
|
1.85728e-02 |
1.863e-02 |
X-ray |
|
1.85887e-02 |
3.628e-02 |
X-ray |
|
2.04116e-01 |
2.296e-02 |
Gamma |
|
2.35690e-01 |
2.437e-01 |
Gamma |
|
3.34913e-01 |
2.370e-02 |
Beta |
|
4.37755e-01 |
3.160e-02 |
Beta |
|
2.53252e-05 |
3.706e+00 |
Auger electron |
|
1.03504e-04 |
6.347e-01 |
Auger electron |
|
1.07798e-04 |
1.397e-01 |
Auger electron |
|
1.48957e-04 |
1.502e+00 |
Auger electron |
|
1.89187e-04 |
1.654e-02 |
Auger electron |
|
1.85287e-03 |
6.038e-01 |
Auger electron |
|
2.07372e-03 |
7.731e-02 |
Auger electron |
|
1.40095e-02 |
1.023e-01 |
Auger electron |
|
1.61428e-02 |
3.712e-02 |
Auger electron |
|
2.16742e-01 |
5.614e-01 |
Conversion electron |
|
2.33014e-01 |
7.789e-02 |
Conversion electron |
|
2.33223e-01 |
1.278e-02 |
Conversion electron |
|
2.33321e-01 |
2.340e-02 |
Conversion electron |
|
2.35331e-01 |
2.128e-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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