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Radionuclide Dosimetric Data Sheets
Neodymium-136
Summary data
General
Classification
Isotope: Nd-136
Atomic number (Z): 60
Mass number (A): 136
Neutron number (N): 76
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 50.65 [m]
Decay constant: 2.2808e-04 [1/s]
Daughters: Pr-136 (100.0%)
Radioactive daughters: Pr-136
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.08046 [MeV]
Mean photon energy: 0.27933 [MeV]
Air kerma rate constant, Γ10: 1.156e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.315e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.289e-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-:
1.289e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 4.475e-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/Nd-136 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/Nd-136 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/Nd-136 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/Nd-136 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.56371e-05 |
2.153e+01 |
X-ray |
|
8.20114e-04 |
1.581e-02 |
X-ray |
|
5.01953e-03 |
8.133e-02 |
X-ray |
|
5.47410e-03 |
1.078e-02 |
X-ray |
|
5.48691e-03 |
5.319e-02 |
X-ray |
|
5.57140e-03 |
1.621e-02 |
X-ray |
|
5.83581e-03 |
1.331e-02 |
X-ray |
|
3.55671e-02 |
2.999e-01 |
X-ray |
|
3.60557e-02 |
5.478e-01 |
X-ray |
|
4.02000e-02 |
1.886e-01 |
Gamma |
|
4.06843e-02 |
5.368e-02 |
X-ray |
|
4.07816e-02 |
1.039e-01 |
X-ray |
|
4.17693e-02 |
1.148e-02 |
X-ray |
|
4.17904e-02 |
2.231e-02 |
X-ray |
|
1.00540e-01 |
1.228e-02 |
Gamma |
|
1.08900e-01 |
3.156e-01 |
Gamma |
|
1.44280e-01 |
1.260e-02 |
Gamma |
|
1.49100e-01 |
6.613e-02 |
Gamma |
|
4.76700e-01 |
1.260e-02 |
Gamma |
|
5.11000e-01 |
8.205e-02 |
Annihilation photon |
|
5.74800e-01 |
1.040e-01 |
Gamma |
|
4.34945e-01 |
3.378e-02 |
Positron |
|
1.29601e-05 |
2.532e+00 |
Auger electron |
|
3.35201e-05 |
2.056e-02 |
Auger electron |
|
7.10398e-05 |
2.688e+00 |
Auger electron |
|
8.70560e-05 |
7.581e+00 |
Auger electron |
|
1.42664e-04 |
1.265e+00 |
Auger electron |
|
4.41751e-04 |
4.038e-01 |
Auger electron |
|
6.69674e-04 |
2.670e+00 |
Auger electron |
|
8.30829e-04 |
1.902e-01 |
Auger electron |
|
4.04666e-03 |
1.020e+00 |
Auger electron |
|
4.95593e-03 |
3.409e-01 |
Auger electron |
|
5.90266e-03 |
2.815e-02 |
Auger electron |
|
2.93378e-02 |
6.112e-02 |
Auger electron |
|
3.34002e-02 |
3.834e-01 |
Conversion electron |
|
3.37571e-02 |
3.949e-02 |
Conversion electron |
|
3.42456e-02 |
1.622e-02 |
Conversion electron |
|
3.45832e-02 |
2.907e-02 |
Auger electron |
|
3.89716e-02 |
9.297e-02 |
Conversion electron |
|
4.02000e-02 |
2.592e-02 |
Conversion electron |
|
5.85300e-02 |
1.367e-02 |
Conversion electron |
|
6.68900e-02 |
2.799e-01 |
Conversion electron |
|
1.02100e-01 |
3.516e-02 |
Conversion electron |
|
1.07090e-01 |
2.414e-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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