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Radionuclide Dosimetric Data Sheets

Ruthenium-92

Summary data

General

Classification

Isotope:  Ru-92
Atomic number (Z):  44
Mass number (A):  92
Neutron number (N):  48

Radioactive decay

Decay modes:  β+, Electron capture
Half-life:  3.65 [m]
Decay constant:  3.1651e-03 [1/s]
Daughters:  Tc-92 (100.0%)
Radioactive daughters:  Tc-92

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.79394 [MeV]
Mean photon energy:  2.08437 [MeV]
Air kerma rate constant, Γ10:  6.871e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  9.321e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.272e-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-:  1.272e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  3.340e-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/Ru-92 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/Ru-92 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/Ru-92 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/Ru-92 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

7.87659e-06

1.921e+01

X-ray

2.41453e-03

4.531e-02

X-ray

2.53088e-03

2.231e-02

X-ray

1.82141e-02

3.728e-01

X-ray

1.83344e-02

7.087e-01

X-ray

2.05668e-02

5.861e-02

X-ray

2.05871e-02

1.141e-01

X-ray

2.09624e-02

1.131e-02

X-ray

2.09655e-02

2.173e-02

X-ray

4.74600e-02

2.784e-01

Gamma

5.63400e-02

8.832e-02

Gamma

1.34600e-01

6.547e-01

Gamma

2.13810e-01

9.600e-01

Gamma

2.59270e-01

9.216e-01

Gamma

4.10400e-01

1.795e-02

Gamma

4.50700e-01

6.816e-02

Gamma

5.11000e-01

1.266e+00

Annihilation photon

8.67000e-01

1.142e-01

Gamma

9.10200e-01

3.245e-02

Gamma

9.45000e-01

2.688e-02

Gamma

9.47200e-01

2.688e-02

Gamma

1.21960e+00

6.048e-02

Gamma

1.22910e+00

3.360e-02

Gamma

1.40360e+00

1.632e-02

Gamma

1.51760e+00

1.920e-02

Gamma

1.60470e+00

3.648e-02

Gamma

1.67960e+00

9.216e-02

Gamma

2.05970e+00

3.456e-02

Gamma

2.30230e+00

1.056e-02

Gamma

4.93728e-01

5.057e-02

Positron

5.26928e-01

1.315e-02

Positron

6.20281e-01

1.214e-02

Positron

7.60352e-01

3.338e-02

Positron

9.21506e-01

6.473e-02

Positron

1.26154e+00

4.450e-01

Positron

2.94076e-05

8.392e+00

Auger electron

1.05397e-04

3.563e-01

Auger electron

1.10598e-04

1.758e+00

Auger electron

2.03862e-04

4.249e+00

Auger electron

2.47187e-04

3.560e-02

Auger electron

2.05403e-03

1.689e+00

Auger electron

2.33259e-03

2.630e-01

Auger electron

2.64162e-03

1.187e-02

Auger electron

1.54229e-02

2.582e-01

Auger electron

1.78238e-02

9.752e-02

Auger electron

2.64480e-02

5.820e-01

Conversion electron

3.53280e-02

5.945e-01

Conversion electron

4.44376e-02

6.513e-02

Conversion electron

4.70350e-02

1.299e-02

Conversion electron

5.33176e-02

5.073e-02

Conversion electron

5.35421e-02

7.216e-02

Conversion electron

5.36624e-02

1.031e-01

Conversion electron

5.59151e-02

4.259e-02

Conversion electron

1.13588e-01

7.117e-02

Conversion electron

1.92798e-01

6.741e-02

Conversion electron

2.38258e-01

1.763e-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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