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Radionuclide Dosimetric Data Sheets
Praseodymium-134m
Summary data
General
Classification
Isotope: Pr-134m
Atomic number (Z): 59
Mass number (A): 134
Neutron number (N): 75
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 17.0 [m]
Decay constant: 6.7956e-04 [1/s]
Daughters: Ce-134 (100.0%)
Radioactive daughters: Ce-134
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.52736 [MeV]
Mean photon energy: 2.31011 [MeV]
Air kerma rate constant, Γ10: 5.068e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 8.194e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.447e-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-:
2.447e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.701e-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/Pr-134m 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/Pr-134m 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/Pr-134m 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/Pr-134m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.61263e-05 |
2.545e+00 |
X-ray |
|
4.82666e-03 |
1.019e-02 |
X-ray |
|
3.42907e-02 |
4.821e-02 |
X-ray |
|
3.47432e-02 |
8.828e-02 |
X-ray |
|
3.92855e-02 |
1.663e-02 |
X-ray |
|
2.15300e-01 |
1.742e-02 |
Gamma |
|
2.31300e-01 |
1.340e-02 |
Gamma |
|
4.09200e-01 |
8.710e-01 |
Gamma |
|
4.17200e-01 |
1.340e-02 |
Gamma |
|
4.80400e-01 |
1.742e-02 |
Gamma |
|
5.11000e-01 |
1.615e+00 |
Annihilation photon |
|
5.18100e-01 |
4.154e-02 |
Gamma |
|
5.56000e-01 |
1.313e-01 |
Gamma |
|
6.39600e-01 |
2.144e-02 |
Gamma |
|
6.85700e-01 |
1.340e-02 |
Gamma |
|
9.65500e-01 |
1.313e-01 |
Gamma |
|
9.73900e-01 |
4.824e-02 |
Gamma |
|
9.78700e-01 |
1.072e-02 |
Gamma |
|
1.00000e+00 |
1.340e-02 |
Gamma |
|
1.36570e+00 |
1.474e-02 |
Gamma |
|
1.49460e+00 |
5.360e-02 |
Gamma |
|
1.57990e+00 |
4.690e-02 |
Gamma |
|
1.90430e+00 |
9.916e-02 |
Gamma |
|
1.96410e+00 |
1.474e-02 |
Gamma |
|
2.13600e+00 |
1.072e-01 |
Gamma |
|
2.23300e+00 |
2.010e-02 |
Gamma |
|
2.33100e+00 |
2.814e-02 |
Gamma |
|
1.25623e+00 |
1.096e-01 |
Positron |
|
1.36336e+00 |
5.881e-02 |
Positron |
|
1.51430e+00 |
3.488e-02 |
Positron |
|
1.55410e+00 |
4.087e-02 |
Positron |
|
1.61435e+00 |
1.595e-02 |
Positron |
|
1.79825e+00 |
3.887e-02 |
Positron |
|
1.99525e+00 |
1.993e-01 |
Positron |
|
2.25913e+00 |
2.990e-01 |
Positron |
|
1.22653e-05 |
3.616e-01 |
Auger electron |
|
6.25378e-05 |
3.929e-01 |
Auger electron |
|
7.40126e-05 |
8.548e-01 |
Auger electron |
|
1.35135e-04 |
1.335e-01 |
Auger electron |
|
3.88344e-04 |
2.832e-02 |
Auger electron |
|
6.26785e-04 |
3.143e-01 |
Auger electron |
|
7.79346e-04 |
2.278e-02 |
Auger electron |
|
3.85038e-03 |
1.214e-01 |
Auger electron |
|
4.70689e-03 |
3.998e-02 |
Auger electron |
|
2.83189e-02 |
1.042e-02 |
Auger electron |
|
3.68744e-01 |
1.365e-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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