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Radionuclide Dosimetric Data Sheets
Praseodymium-148m
Summary data
General
Classification
Isotope: Pr-148m
Atomic number (Z): 59
Mass number (A): 148
Neutron number (N): 89
Radioactive decay
Decay modes: β-
Half-life: 2.01 [m]
Decay constant: 5.7475e-03 [1/s]
Daughters: Nd-148 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.6807 [MeV]
Mean photon energy: 0.93374 [MeV]
Air kerma rate constant, Γ10: 3.437e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.437e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.693e-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-:
2.693e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.496e-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-148m 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-148m 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-148m 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-148m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.52018e-05 |
6.118e-01 |
X-ray |
|
3.68696e-02 |
1.225e-02 |
X-ray |
|
3.73962e-02 |
2.231e-02 |
X-ray |
|
2.47000e-01 |
1.800e-02 |
Gamma |
|
3.01702e-01 |
9.500e-01 |
Gamma |
|
4.50800e-01 |
5.000e-01 |
Gamma |
|
6.97520e-01 |
4.000e-01 |
Gamma |
|
9.35000e-01 |
1.600e-02 |
Gamma |
|
1.10620e+00 |
4.100e-02 |
Gamma |
|
1.55670e+00 |
4.900e-02 |
Gamma |
|
1.25714e+00 |
9.414e-02 |
Beta |
|
1.33591e+00 |
1.674e-02 |
Beta |
|
1.65432e+00 |
4.393e-01 |
Beta |
|
1.76891e+00 |
4.498e-01 |
Beta |
|
1.36628e-05 |
6.117e-02 |
Auger electron |
|
7.80112e-05 |
6.246e-02 |
Auger electron |
|
9.40071e-05 |
2.317e-01 |
Auger electron |
|
1.51742e-04 |
3.539e-02 |
Auger electron |
|
7.10532e-04 |
8.257e-02 |
Auger electron |
|
4.14452e-03 |
3.132e-02 |
Auger electron |
|
5.09473e-03 |
1.053e-02 |
Auger electron |
|
2.58105e-01 |
3.877e-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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