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Radionuclide Dosimetric Data Sheets

Chlorine-34m

Isotope:  Cl-34m
Atomic number (Z):  17
Mass number (A):  34
Neutron number (N):  17

Decay modes:  β+, Electron capture, Internal transition
Half-life:  32.0 [m]
Decay constant:  3.6101e-04 [1/s]
Daughters:  Cl-34 (44.6%), S-34 (55.4%)
Radioactive daughters:  Cl-34

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.45956 [MeV]
Mean photon energy:  2.11265 [MeV]
Air kerma rate constant, Γ₁₀:  4.535e-17 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  6.633e-17 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  7.363e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δ_α:  0.000e+00 [Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δ_β-,β+,e-:  7.363e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  3.385e-13 [Gy·kg/Bq·s]

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/Cl-34m DPK.csv

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/Cl-34m Summary Spectrum.csv

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/Cl-34m Beta Spectrum.csv

 

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/Cl-34m Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
1.29087e-05	4.823e-02	X-ray
1.48673e-05	1.596e-01	X-ray
1.46360e-01	4.054e-01	Gamma
5.11000e-01	1.084e+00	Annihilation photon
1.17663e+00	1.409e-01	Gamma
2.12749e+00	4.282e-01	Gamma
3.30404e+00	1.229e-01	Gamma
5.53807e-01	2.556e-01	Positron
1.09853e+00	2.836e-01	Positron
4.05815e-05	1.609e-02	Auger electron
1.47506e-04	2.097e-02	Auger electron
1.80154e-04	6.925e-02	Auger electron
2.36258e-03	2.912e-02	Auger electron
1.43555e-01	3.725e-02	Conversion electron

 

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

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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