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Radionuclide Dosimetric Data Sheets

Promethium-151

Summary data

General

Classification

Isotope:  Pm-151
Atomic number (Z):  61
Mass number (A):  151
Neutron number (N):  90

Radioactive decay

Decay modes:  β-
Half-life:  28.4 [h]
Decay constant:  6.7796e-06 [1/s]
Daughters:  Sm-151 (100.0%)
Radioactive daughters:  Sm-151

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.30477 [MeV]
Mean photon energy:  0.3289 [MeV]
Air kerma rate constant, Γ10:  1.257e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  1.257e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  4.883e-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-:  4.883e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  5.270e-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/Pm-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/Pm-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/Pm-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/Pm-151 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

1.45864e-05

7.740e+00

X-ray

5.62210e-03

2.316e-02

X-ray

6.20531e-03

1.507e-02

X-ray

3.95578e-02

8.333e-02

X-ray

4.01680e-02

1.508e-01

X-ray

4.53440e-02

1.511e-02

X-ray

4.54683e-02

2.924e-02

X-ray

6.48800e-02

1.890e-02

Gamma

6.58300e-02

1.148e-02

Gamma

1.00020e-01

2.542e-02

Gamma

1.01930e-01

1.282e-02

Gamma

1.04840e-01

3.510e-02

Gamma

1.63580e-01

1.553e-02

Gamma

1.67750e-01

8.325e-02

Gamma

1.77160e-01

3.825e-02

Gamma

2.09000e-01

1.733e-02

Gamma

2.32430e-01

1.035e-02

Gamma

2.40090e-01

3.825e-02

Gamma

2.75210e-01

6.750e-02

Gamma

3.23940e-01

1.215e-02

Gamma

3.40080e-01

2.250e-01

Gamma

3.44900e-01

2.115e-02

Gamma

4.40850e-01

1.507e-02

Gamma

4.45680e-01

4.005e-02

Gamma

6.36200e-01

1.418e-02

Gamma

7.17720e-01

4.050e-02

Gamma

7.52820e-01

1.282e-02

Gamma

8.80961e-02

2.387e-02

Beta

1.05794e-01

6.067e-02

Beta

1.21885e-01

1.134e-02

Beta

1.33003e-01

3.083e-02

Beta

2.39391e-01

7.061e-02

Beta

2.58451e-01

1.890e-02

Beta

2.77978e-01

4.177e-01

Beta

2.86128e-01

3.282e-02

Beta

2.92823e-01

1.691e-02

Beta

3.31471e-01

2.287e-02

Beta

3.47733e-01

1.392e-02

Beta

3.47994e-01

7.857e-02

Beta

3.73437e-01

2.984e-02

Beta

3.87759e-01

2.685e-02

Beta

4.14415e-01

5.967e-02

Beta

4.16406e-01

3.978e-02

Beta

1.51033e-05

6.250e-01

Auger electron

9.74624e-05

4.912e-01

Auger electron

1.06282e-04

3.273e+00

Auger electron

1.73343e-04

7.657e-01

Auger electron

5.06495e-04

5.136e-02

Auger electron

8.19931e-04

9.786e-01

Auger electron

1.00975e-03

6.670e-02

Auger electron

3.41330e-03

4.459e-01

Conversion electron

4.45891e-03

2.113e-01

Auger electron

4.82100e-03

1.187e-01

Conversion electron

5.50888e-03

7.225e-02

Auger electron

1.80040e-02

9.715e-02

Conversion electron

1.89540e-02

5.568e-02

Conversion electron

2.28240e-02

1.953e-02

Conversion electron

3.25196e-02

1.438e-02

Auger electron

5.31440e-02

3.735e-02

Conversion electron

5.71777e-02

1.259e-02

Conversion electron

5.79640e-02

4.494e-02

Conversion electron

1.30284e-01

1.088e-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

 

 

 

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