<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Dysprosium-151
Summary data
General
Classification
Isotope: Dy-151
Atomic number (Z): 66
Mass number (A): 151
Neutron number (N): 85
Radioactive decay
Decay modes: α, β+, Electron capture
Half-life: 17.9 [m]
Decay constant: 6.4539e-04 [1/s]
Daughters: Tb-151 (53.4%), Tb-151m (41.0%), Gd-147 (5.6%)
Radioactive daughters: Tb-151, Tb-151m, Gd-147
Dosimetric constants
Mean alpha energy: 0.234 [MeV]
Mean electron energy: 0.06526 [MeV]
Mean photon energy: 1.37232 [MeV]
Air kerma rate constant, Γ10: 4.828e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.942e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.795e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 3.749e-14
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
1.046e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.199e-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/Dy-151 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/Dy-151 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/Dy-151 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/Dy-151 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.38705e-05 |
1.577e+01 |
X-ray |
|
1.16457e-03 |
2.526e-02 |
X-ray |
|
6.22630e-03 |
1.046e-02 |
X-ray |
|
6.26069e-03 |
9.249e-02 |
X-ray |
|
6.91969e-03 |
1.600e-02 |
X-ray |
|
6.98190e-03 |
6.800e-02 |
X-ray |
|
7.07629e-03 |
2.257e-02 |
X-ray |
|
7.35101e-03 |
1.561e-02 |
X-ray |
|
8.10032e-03 |
1.188e-02 |
X-ray |
|
2.29200e-02 |
1.728e-02 |
Gamma |
|
4.37992e-02 |
2.214e-01 |
X-ray |
|
4.45546e-02 |
3.968e-01 |
X-ray |
|
4.94600e-02 |
8.077e-02 |
Gamma |
|
5.03066e-02 |
4.058e-02 |
X-ray |
|
5.04632e-02 |
7.850e-02 |
X-ray |
|
5.17791e-02 |
1.726e-02 |
X-ray |
|
1.76400e-01 |
1.060e-01 |
Gamma |
|
3.03000e-01 |
1.355e-02 |
Gamma |
|
3.86100e-01 |
1.937e-01 |
Gamma |
|
4.32160e-01 |
4.030e-02 |
Gamma |
|
4.63200e-01 |
2.397e-02 |
Gamma |
|
4.76560e-01 |
7.999e-02 |
Gamma |
|
5.11000e-01 |
5.895e-02 |
Annihilation photon |
|
5.46310e-01 |
1.433e-01 |
Gamma |
|
5.70700e-01 |
1.120e-02 |
Gamma |
|
5.83900e-01 |
1.042e-02 |
Gamma |
|
5.96770e-01 |
1.572e-02 |
Gamma |
|
6.39500e-01 |
1.364e-02 |
Gamma |
|
6.89170e-01 |
2.527e-02 |
Gamma |
|
7.00320e-01 |
1.798e-02 |
Gamma |
|
7.12000e-01 |
1.199e-02 |
Gamma |
|
7.12000e-01 |
1.199e-02 |
Gamma |
|
7.45400e-01 |
1.216e-02 |
Gamma |
|
7.55570e-01 |
2.032e-02 |
Gamma |
|
8.14100e-01 |
1.016e-02 |
Gamma |
|
8.33900e-01 |
2.206e-02 |
Gamma |
|
8.45460e-01 |
2.006e-02 |
Gamma |
|
8.55840e-01 |
1.303e-02 |
Gamma |
|
8.70360e-01 |
1.407e-02 |
Gamma |
|
9.36270e-01 |
1.068e-02 |
Gamma |
|
9.83730e-01 |
2.058e-02 |
Gamma |
|
1.01040e+00 |
3.057e-02 |
Gamma |
|
1.06250e+00 |
1.007e-02 |
Gamma |
|
1.07060e+00 |
1.233e-02 |
Gamma |
|
1.09610e+00 |
1.763e-02 |
Gamma |
|
1.11430e+00 |
2.666e-02 |
Gamma |
|
1.12980e+00 |
1.129e-02 |
Gamma |
|
1.12980e+00 |
2.284e-02 |
Gamma |
|
1.14180e+00 |
2.015e-02 |
Gamma |
|
1.25610e+00 |
1.086e-02 |
Gamma |
|
1.47570e+00 |
2.136e-02 |
Gamma |
|
1.52510e+00 |
1.494e-02 |
Gamma |
|
1.53810e+00 |
1.980e-02 |
Gamma |
|
1.59310e+00 |
2.605e-02 |
Gamma |
|
1.65210e+00 |
1.433e-02 |
Gamma |
|
1.70160e+00 |
4.568e-02 |
Gamma |
|
1.73725e-05 |
9.648e-01 |
Auger electron |
|
1.21723e-04 |
7.227e+00 |
Auger electron |
|
1.39860e-04 |
4.520e-01 |
Auger electron |
|
1.99095e-04 |
1.226e+00 |
Auger electron |
|
6.44175e-04 |
4.247e-01 |
Auger electron |
|
9.64571e-04 |
2.294e+00 |
Auger electron |
|
1.14588e-03 |
1.320e-01 |
Auger electron |
|
5.04875e-03 |
8.264e-01 |
Auger electron |
|
6.26772e-03 |
2.904e-01 |
Auger electron |
|
7.52593e-03 |
2.567e-02 |
Auger electron |
|
1.42469e-02 |
3.298e-01 |
Conversion electron |
|
1.46591e-02 |
4.033e-02 |
Conversion electron |
|
1.54147e-02 |
1.925e-02 |
Conversion electron |
|
2.13232e-02 |
8.551e-02 |
Conversion electron |
|
2.29200e-02 |
2.397e-02 |
Conversion electron |
|
3.58945e-02 |
3.295e-02 |
Auger electron |
|
4.07869e-02 |
1.588e-01 |
Conversion electron |
|
4.11991e-02 |
1.804e-02 |
Conversion electron |
|
4.25487e-02 |
1.639e-02 |
Auger electron |
|
4.78632e-02 |
4.049e-02 |
Conversion electron |
|
4.94600e-02 |
1.132e-02 |
Conversion electron |
|
1.24340e-01 |
3.731e-02 |
Conversion electron |
|
4.06881e+00 |
5.600e-02 |
Alpha |
|
1.10788e-01 |
5.600e-02 |
Alpha recoil |
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
