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Radionuclide Dosimetric Data Sheets

Strontium-93

Summary data

General

Classification

Isotope:  Sr-93
Atomic number (Z):  38
Mass number (A):  93
Neutron number (N):  55

Radioactive decay

Decay modes:  β-
Half-life:  7.423 [m]
Decay constant:  1.5563e-03 [1/s]
Daughters:  Y-93 (100.0%)
Radioactive daughters:  Y-93

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.80942 [MeV]
Mean photon energy:  2.26365 [MeV]
Air kerma rate constant, Γ10:  8.060e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  8.060e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.297e-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-:  1.297e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  3.627e-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/Sr-93 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/Sr-93 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/Sr-93 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/Sr-93 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

5.29806e-06

2.284e+00

X-ray

1.48403e-02

2.936e-02

X-ray

1.49185e-02

5.626e-02

X-ray

1.68499e-01

1.843e-01

Gamma

2.60120e-01

7.412e-02

Gamma

3.46490e-01

3.278e-02

Gamma

3.77360e-01

1.482e-02

Gamma

4.32670e-01

1.482e-02

Gamma

4.46200e-01

2.360e-02

Gamma

4.81960e-01

1.136e-02

Gamma

4.83730e-01

1.666e-02

Gamma

5.90238e-01

6.800e-01

Gamma

5.93810e-01

1.115e-02

Gamma

5.96150e-01

1.333e-02

Gamma

6.10930e-01

1.088e-02

Gamma

6.63580e-01

1.646e-02

Gamma

6.90060e-01

1.013e-02

Gamma

7.10312e-01

2.176e-01

Gamma

7.18330e-01

1.496e-02

Gamma

7.71190e-01

1.163e-02

Gamma

8.34890e-01

1.673e-02

Gamma

8.75730e-01

2.448e-01

Gamma

8.88130e-01

2.210e-01

Gamma

1.04063e+00

3.196e-02

Gamma

1.09400e+00

1.761e-02

Gamma

1.12248e+00

4.012e-02

Gamma

1.21548e+00

2.496e-02

Gamma

1.26638e+00

1.115e-02

Gamma

1.26947e+00

7.140e-02

Gamma

1.32124e+00

2.611e-02

Gamma

1.38711e+00

3.468e-02

Gamma

1.55159e+00

1.020e-02

Gamma

1.63405e+00

1.448e-02

Gamma

1.69407e+00

2.584e-02

Gamma

1.69906e+00

3.332e-02

Gamma

1.70659e+00

1.108e-02

Gamma

1.76536e+00

1.068e-02

Gamma

1.81145e+00

1.408e-02

Gamma

1.92879e+00

1.170e-02

Gamma

2.23027e+00

1.550e-02

Gamma

2.36472e+00

1.578e-02

Gamma

2.54384e+00

3.026e-02

Gamma

2.68865e+00

2.128e-02

Gamma

4.09846e-01

1.256e-02

Beta

4.61813e-01

1.218e-02

Beta

4.90541e-01

3.588e-02

Beta

5.06817e-01

2.984e-02

Beta

5.12776e-01

7.270e-02

Beta

5.49204e-01

1.633e-01

Beta

5.99358e-01

1.076e-01

Beta

6.01638e-01

1.095e-01

Beta

6.13308e-01

3.588e-02

Beta

6.94202e-01

1.973e-02

Beta

6.98429e-01

1.086e-02

Beta

7.69488e-01

1.454e-02

Beta

1.02607e+00

1.482e-01

Beta

1.18824e+00

1.416e-02

Beta

1.18905e+00

3.682e-02

Beta

1.26687e+00

2.455e-02

Beta

1.39035e+00

2.077e-02

Beta

1.44610e+00

5.004e-02

Beta

1.52506e+00

1.983e-02

Beta

2.02982e-05

1.270e+00

Auger electron

9.45320e-05

3.892e-01

Auger electron

9.65085e-05

1.744e-01

Auger electron

9.80741e-05

3.186e-02

Auger electron

1.31599e-04

1.431e-02

Auger electron

1.66242e-03

1.653e-01

Auger electron

1.82662e-03

1.652e-02

Auger electron

1.26657e-02

3.020e-02

Auger electron

1.45497e-02

1.050e-02

Auger electron

1.51499e-01

1.387e-01

Conversion electron

1.66144e-01

1.305e-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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