<= Return to MIRDspec isotope database


Radionuclide Dosimetric Data Sheets

Rhenium-188m

Summary data

General

Classification

Isotope:  Re-188m
Atomic number (Z):  75
Mass number (A):  188
Neutron number (N):  113

Radioactive decay

Decay modes:  Internal transition
Half-life:  18.59 [m]
Decay constant:  6.2143e-04 [1/s]
Daughters:  Re-188 (100.0%)
Radioactive daughters:  Re-188

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.09761 [MeV]
Mean photon energy:  0.07153 [MeV]
Air kerma rate constant, Γ10:  1.218e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  1.218e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.564e-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-:  1.564e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  1.146e-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/Re-188m 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/Re-188m Summary 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/Re-188m Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

3.73394e-05

1.979e+01

X-ray

1.84846e-03

7.672e-02

X-ray

7.62640e-03

1.428e-02

X-ray

8.57621e-03

2.441e-02

X-ray

8.64530e-03

2.153e-01

X-ray

9.83057e-03

1.442e-02

X-ray

1.00312e-02

8.374e-02

X-ray

1.01475e-02

1.778e-02

X-ray

1.02735e-02

3.859e-02

X-ray

1.17147e-02

1.577e-02

X-ray

5.98631e-02

1.646e-01

X-ray

6.13181e-02

2.846e-01

X-ray

6.36000e-02

2.135e-01

Gamma

6.91788e-02

3.076e-02

X-ray

6.94956e-02

5.944e-02

X-ray

7.14134e-02

1.368e-02

X-ray

9.24300e-02

5.150e-02

Gamma

1.05960e-01

1.081e-01

Gamma

2.73865e-05

3.961e+00

Auger electron

3.95002e-05

4.465e-01

Conversion electron

5.24868e-05

1.155e-02

Auger electron

1.61684e-04

6.654e+00

Auger electron

3.19748e-04

1.422e+00

Auger electron

3.28774e-04

2.450e-01

Auger electron

4.79142e-04

5.358e-01

Auger electron

1.52748e-03

3.042e+00

Auger electron

1.72191e-03

2.194e-01

Auger electron

2.00231e-03

1.204e-02

Auger electron

2.40000e-03

1.406e-01

Conversion electron

3.39200e-03

2.231e-02

Conversion electron

5.36200e-03

2.630e-01

Conversion electron

6.64475e-03

7.600e-01

Auger electron

8.47132e-03

2.961e-01

Auger electron

1.03299e-02

2.866e-02

Auger electron

1.35395e-02

9.358e-02

Conversion electron

1.59000e-02

2.753e-02

Conversion electron

2.05740e-02

2.692e-01

Conversion electron

3.41040e-02

3.221e-01

Conversion electron

4.85493e-02

1.674e-02

Auger electron

5.10920e-02

5.171e-01

Conversion electron

5.16070e-02

5.841e-02

Conversion electron

5.30620e-02

1.602e-02

Conversion electron

6.12395e-02

1.362e-01

Conversion electron

6.36000e-02

4.025e-02

Conversion electron

7.99220e-02

3.921e-02

Conversion electron

8.04370e-02

1.146e-02

Conversion electron

9.00695e-02

1.375e-02

Conversion electron

9.34520e-02

4.640e-02

Conversion electron

9.39670e-02

3.233e-02

Conversion electron

9.54220e-02

2.501e-02

Conversion electron

1.03600e-01

2.522e-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

 

 

 

MIRDsoft MIRDspecs version 20250101 (www.mirdsoft.org)

<= Return to MIRDspec isotope database