<= Return to MIRDspec isotope database


Radionuclide Dosimetric Data Sheets

Yttrium-86

Summary data

General

Classification

Isotope:  Y-86
Atomic number (Z):  39
Mass number (A):  86
Neutron number (N):  47

Radioactive decay

Decay modes:  β+, Electron capture
Half-life:  14.74 [h]
Decay constant:  1.3062e-05 [1/s]
Daughters:  Sr-86 (100.0%)
Radioactive daughters:  None

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.21787 [MeV]
Mean photon energy:  3.5777 [MeV]
Air kerma rate constant, Γ10:  1.227e-16 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  1.350e-16 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  3.491e-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-:  3.491e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  5.732e-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/Y-86 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/Y-86 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/Y-86 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/Y-86 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

2.09354e-05

5.717e+00

X-ray

1.79939e-03

1.023e-02

X-ray

1.40549e-02

1.206e-01

X-ray

1.41246e-02

2.315e-01

X-ray

1.57867e-02

1.760e-02

X-ray

1.57975e-02

3.430e-02

X-ray

1.87870e-01

1.262e-02

Gamma

1.90800e-01

1.015e-02

Gamma

3.07000e-01

3.465e-02

Gamma

3.82860e-01

3.630e-02

Gamma

4.43130e-01

1.691e-01

Gamma

5.11000e-01

6.378e-01

Annihilation photon

5.15180e-01

4.892e-02

Gamma

5.80570e-01

4.785e-02

Gamma

6.08290e-01

2.013e-02

Gamma

6.27720e-01

3.259e-01

Gamma

6.44820e-01

2.186e-02

Gamma

6.45870e-01

9.158e-02

Gamma

7.03330e-01

1.543e-01

Gamma

7.09900e-01

2.624e-02

Gamma

7.40810e-01

1.361e-02

Gamma

7.67630e-01

2.392e-02

Gamma

7.77370e-01

2.244e-01

Gamma

8.26020e-01

3.300e-02

Gamma

8.33720e-01

1.485e-02

Gamma

8.35670e-01

4.372e-02

Gamma

9.55350e-01

1.039e-02

Gamma

1.02404e+00

3.795e-02

Gamma

1.07663e+00

8.250e-01

Gamma

1.15305e+00

3.053e-01

Gamma

1.16303e+00

1.180e-02

Gamma

1.25311e+00

1.534e-02

Gamma

1.34915e+00

2.945e-02

Gamma

1.80170e+00

1.650e-02

Gamma

1.85438e+00

1.716e-01

Gamma

1.92072e+00

2.079e-01

Gamma

2.56797e+00

2.252e-02

Gamma

2.61011e+00

1.238e-02

Gamma

3.94048e-01

1.098e-02

Positron

4.52145e-01

1.897e-02

Positron

5.09380e-01

1.328e-02

Positron

5.35352e-01

1.188e-01

Positron

6.80993e-01

5.590e-02

Positron

7.67706e-01

1.697e-02

Positron

8.83180e-01

3.594e-02

Positron

1.43643e+00

1.997e-02

Positron

1.36397e-05

1.593e+00

Auger electron

7.49570e-05

1.589e+00

Auger electron

9.39253e-05

6.748e-01

Auger electron

1.00537e-04

1.451e-01

Auger electron

1.09927e-04

7.701e-02

Auger electron

1.57336e-03

6.644e-01

Auger electron

1.71376e-03

5.908e-02

Auger electron

1.20238e-02

1.378e-01

Auger electron

1.37890e-02

4.670e-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

 

 

 

MIRDsoft MIRDspecs version 20250101 (www.mirdsoft.org)

<= Return to MIRDspec isotope database