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Radionuclide Dosimetric Data Sheets

Radium-230

Summary data

General

Classification

Isotope:  Ra-230
Atomic number (Z):  88
Mass number (A):  230
Neutron number (N):  142

Radioactive decay

Decay modes:  β-
Half-life:  93.0 [m]
Decay constant:  1.2422e-04 [1/s]
Daughters:  Ac-230 (100.0%)
Radioactive daughters:  Ac-230

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.22006 [MeV]
Mean photon energy:  0.07944 [MeV]
Air kerma rate constant, Γ10:  6.494e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  6.494e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  3.526e-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-:  3.526e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  1.273e-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/Ra-230 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/Ra-230 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/Ra-230 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/Ra-230 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

7.95431e-05

6.294e+00

X-ray

2.98480e-03

3.126e-02

X-ray

1.26589e-02

5.200e-02

X-ray

1.52434e-02

1.065e-02

X-ray

1.57834e-02

2.776e-02

X-ray

6.30000e-02

2.800e-02

Gamma

7.20000e-02

7.910e-02

Gamma

8.80271e-02

3.946e-02

X-ray

9.13071e-02

6.412e-02

X-ray

9.21000e-02

1.470e-02

Gamma

1.01000e-01

1.120e-02

Gamma

1.03286e-01

1.427e-02

X-ray

1.89200e-01

1.169e-02

Gamma

2.02800e-01

2.156e-02

Gamma

2.85200e-01

1.274e-02

Gamma

4.48900e-01

1.050e-02

Gamma

4.57900e-01

1.295e-02

Gamma

4.69700e-01

2.051e-02

Gamma

4.78700e-01

1.694e-02

Gamma

4.62476e-02

1.688e-02

Beta

6.29812e-02

4.568e-02

Beta

6.91104e-02

3.178e-02

Beta

1.03177e-01

2.781e-02

Beta

1.22449e-01

4.072e-02

Beta

1.46309e-01

2.384e-02

Beta

1.50803e-01

4.171e-02

Beta

1.83454e-01

8.938e-02

Beta

1.93416e-01

1.788e-01

Beta

2.18449e-01

4.668e-01

Beta

3.11774e-05

1.446e+00

Auger electron

1.26700e-04

1.692e+00

Auger electron

1.87316e-04

9.582e-01

Auger electron

4.82933e-04

3.128e-01

Auger electron

1.27713e-03

1.009e-01

Auger electron

2.28677e-03

5.192e-01

Auger electron

2.69613e-03

8.788e-02

Auger electron

5.09610e-03

1.726e-01

Conversion electron

9.00000e-03

5.837e-02

Conversion electron

9.54458e-03

9.579e-02

Auger electron

1.25749e-02

4.704e-02

Auger electron

2.71100e-02

2.001e-02

Conversion electron

5.21520e-02

2.024e-02

Conversion electron

5.28370e-02

1.382e-02

Conversion electron

5.61170e-02

1.374e-02

Conversion electron

6.80961e-02

1.169e-02

Conversion electron

7.22520e-02

4.660e-02

Conversion electron

7.69100e-02

2.093e-02

Conversion electron

8.11520e-02

2.721e-02

Conversion electron

8.20100e-02

2.814e-02

Conversion electron

8.81961e-02

1.246e-02

Conversion electron

1.04610e-01

1.389e-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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