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Radionuclide Dosimetric Data Sheets

Krypton-89

Summary data

General

Classification

Isotope:  Kr-89
Atomic number (Z):  36
Mass number (A):  89
Neutron number (N):  53

Radioactive decay

Decay modes:  β-
Half-life:  3.15 [m]
Decay constant:  3.6674e-03 [1/s]
Daughters:  Rb-89 (100.0%)
Radioactive daughters:  Rb-89

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  1.37053 [MeV]
Mean photon energy:  1.93125 [MeV]
Air kerma rate constant, Γ10:  6.154e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  6.154e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  2.196e-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-:  2.196e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  3.094e-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/Kr-89 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/Kr-89 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/Kr-89 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/Kr-89 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

1.52773e-05

1.812e-01

X-ray

1.97700e-01

1.507e-02

Gamma

2.20948e-01

2.010e-01

Gamma

3.45030e-01

1.186e-02

Gamma

3.56160e-01

4.161e-02

Gamma

3.69300e-01

1.387e-02

Gamma

4.11420e-01

2.573e-02

Gamma

4.97383e-01

6.633e-02

Gamma

4.98600e-01

1.146e-02

Gamma

5.76960e-01

5.668e-02

Gamma

5.86030e-01

1.668e-01

Gamma

6.96240e-01

1.789e-02

Gamma

7.38390e-01

4.221e-02

Gamma

7.76490e-01

1.126e-02

Gamma

8.35530e-01

1.106e-02

Gamma

8.67080e-01

5.950e-02

Gamma

9.04270e-01

7.216e-02

Gamma

1.10778e+00

2.935e-02

Gamma

1.11661e+00

1.668e-02

Gamma

1.27373e+00

1.367e-02

Gamma

1.32428e+00

3.075e-02

Gamma

1.47276e+00

6.914e-02

Gamma

1.50096e+00

1.327e-02

Gamma

1.53004e+00

3.337e-02

Gamma

1.53368e+00

5.146e-02

Gamma

1.69370e+00

4.402e-02

Gamma

1.90340e+00

1.045e-02

Gamma

2.01223e+00

1.568e-02

Gamma

2.86623e+00

1.749e-02

Gamma

3.14026e+00

1.045e-02

Gamma

3.36170e+00

1.045e-02

Gamma

3.53288e+00

1.347e-02

Gamma

4.71593e-01

2.531e-02

Beta

5.52980e-01

1.460e-02

Beta

6.25593e-01

1.927e-02

Beta

6.29837e-01

1.519e-02

Beta

6.44956e-01

1.957e-02

Beta

8.56472e-01

3.991e-02

Beta

8.95510e-01

1.460e-02

Beta

9.81319e-01

1.256e-01

Beta

1.07386e+00

6.619e-02

Beta

1.18753e+00

2.998e-02

Beta

1.26402e+00

2.336e-02

Beta

1.40899e+00

9.929e-02

Beta

1.48703e+00

2.628e-02

Beta

1.58549e+00

3.407e-02

Beta

1.64728e+00

1.168e-02

Beta

1.93996e+00

2.239e-02

Beta

1.94425e+00

4.186e-02

Beta

1.98260e+00

1.168e-02

Beta

2.22228e+00

2.239e-01

Beta

1.26043e-05

5.312e-02

Auger electron

6.50030e-05

5.326e-02

Auger electron

7.35543e-05

2.149e-02

Auger electron

1.48963e-03

2.008e-02

Auger 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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