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Radionuclide Dosimetric Data Sheets

Rhodium-97m

Summary data

General

Classification

Isotope:  Rh-97m
Atomic number (Z):  45
Mass number (A):  97
Neutron number (N):  52

Radioactive decay

Decay modes:  β+, Electron capture, Internal transition
Half-life:  46.2 [m]
Decay constant:  2.5005e-04 [1/s]
Daughters:  Ru-97 (94.4%), Rh-97 (5.6%)
Radioactive daughters:  Ru-97, Rh-97

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.19919 [MeV]
Mean photon energy:  2.20169 [MeV]
Air kerma rate constant, Γ10:  7.113e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  7.806e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  3.191e-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-:  3.191e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  3.528e-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/Rh-97m 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/Rh-97m 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/Rh-97m 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/Rh-97m Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

8.90919e-06

7.079e+00

X-ray

9.95804e-06

3.364e-01

X-ray

2.54865e-03

1.887e-02

X-ray

1.91152e-02

1.583e-01

X-ray

1.92483e-02

3.004e-01

X-ray

2.01865e-02

1.401e-02

X-ray

2.16049e-02

2.520e-02

X-ray

2.16277e-02

4.902e-02

X-ray

1.89210e-01

4.866e-01

Gamma

2.52120e-01

1.062e-02

Gamma

2.58760e-01

1.551e-02

Gamma

3.38400e-01

1.217e-02

Gamma

4.21550e-01

1.272e-01

Gamma

5.11000e-01

3.581e-01

Annihilation photon

5.27850e-01

8.295e-02

Gamma

5.62100e-01

1.051e-02

Gamma

5.67240e-01

1.001e-02

Gamma

5.82250e-01

2.820e-02

Gamma

7.19000e-01

3.373e-02

Gamma

7.71370e-01

5.419e-02

Gamma

9.08350e-01

2.323e-02

Gamma

9.95360e-01

3.926e-02

Gamma

1.01333e+00

6.028e-02

Gamma

1.18410e+00

4.590e-02

Gamma

1.18730e+00

2.599e-02

Gamma

1.18730e+00

1.991e-02

Gamma

1.42640e+00

2.488e-02

Gamma

1.46320e+00

1.327e-02

Gamma

1.47460e+00

1.659e-02

Gamma

1.58666e+00

8.903e-02

Gamma

1.65690e+00

1.991e-02

Gamma

1.71850e+00

2.488e-02

Gamma

1.73970e+00

1.272e-02

Gamma

1.78510e+00

1.438e-02

Gamma

1.96500e+00

1.106e-02

Gamma

2.00810e+00

4.258e-02

Gamma

2.03680e+00

1.217e-02

Gamma

2.03680e+00

2.986e-02

Gamma

2.12320e+00

2.931e-02

Gamma

2.15210e+00

1.327e-02

Gamma

2.23710e+00

1.051e-02

Gamma

2.24560e+00

1.382e-01

Gamma

2.37570e+00

1.040e-02

Gamma

2.60800e+00

2.488e-02

Gamma

2.64780e+00

3.594e-02

Gamma

3.37410e+00

1.493e-02

Gamma

8.18929e-01

1.095e-02

Positron

8.81500e-01

2.100e-02

Positron

9.93461e-01

1.826e-02

Positron

1.15038e+00

1.004e-01

Positron

3.14525e-05

2.936e+00

Auger electron

3.35204e-05

1.331e-01

Auger electron

1.07976e-04

1.529e-01

Auger electron

1.14204e-04

6.639e-01

Auger electron

1.18159e-04

3.249e-02

Auger electron

2.31917e-04

1.626e+00

Auger electron

2.60369e-04

7.956e-02

Auger electron

2.77369e-04

1.195e-02

Auger electron

2.15883e-03

6.340e-01

Auger electron

2.26667e-03

3.068e-02

Auger electron

2.46835e-03

1.080e-01

Auger electron

1.61570e-02

9.985e-02

Auger electron

1.86981e-02

3.842e-02

Auger electron

1.67123e-01

2.593e-02

Conversion electron

2.35569e-01

3.171e-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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