RADIONUCLIDE
DATA SHEET
POLONIUM 210
Chemical Symbol:
Po-210
Half-Life:
138.376 days
Atomic Number:
84
Decay Constant:
0.005009 days-1
Mass Number:
210 (126 neutrons)
Decay Mode:
Alpha
U.S. NRC Exempt Quantity Limit:
0.1 μCi (3.7 kBq)
IAEA Exempt Quantity Limit:
0.27 μCi (10 kBq)
Gammas From Po-210
Energy (keV)
Intensity (%)
803.10
0.00121
X-rays From Po-210
Energy (keV)
Intensity (%)
Assignment
9.184
8.6E-08
Pb Ll
10.450
1.72E-07
Pb Lα2
10.551
1.53E-06
Pb Lα1
11.349
2.43E-08
Pb Lh
12.142
2.39E-08
Pb Lβ6
12.307
6.4E-08
Pb Lβ4
12.611
3.80E-07
Pb Lβ2
12.614
1.06E-06
Pb Lβ1
12.794
7.6E-08
Pb Lβ3
13.015
4.9E-08
Pb Lβ5
14.765
2.21E-07
Pb Lγ1
15.097
2.2E-08
Pb Lγ2
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15.178
3.8E-08
Pb Lγ6
15.216
2.7E-08
Pb Lγ3
72.144
4.19E-09
Pb Kα3
72.805
2.73E-06
Pb Kα2
74.969
4.60E-06
Pb Kα1
84.450
5.46E-07
Pb Kβ3
84.938
1.05E-06
Pb Kβ1
85.470
3.06E-08
Pb Kβ5
87.300
3.83E-07
Pb Kβ2
87.580
8.6E-08
Pb Kβ4
Alphas From Po-210
Energy (keV)
Intensity (%)
4516.58
0.00122
5304.38
100
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Po-210 Decay Scheme
Reference(s):
- Health Physics and Radiological Health, 4th Edition by Thomas E. Johnson PhD, Brian K. Birky Ph.D.
- National Nuclear Data Center database - http://www.nndc.bnl.gov/
- Table of Radioactive Isotopes (ToRI) database - http:/nucleardata.nuclear.lu.se/nucleardata/toi/
Prepared by:
Spectrum Techniques, LLC.
106 Union Valley Road
Oak Ridge, TN 37830
Phone: 865.482.9937
Fax: 865.483.0473
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