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A characteristic constant for a radionuclide, which is defined in terms of an ideal point source, as , where is the air-kerma rate due to photons (gamma and x rays) of energy greater than δ at a distance l in a vacuum from a point source of the radionuclide of activity A.
(Adapted from [http://www.icrp.org/publication.asp?id=ICRP%20Publication%20107 ICRP ''Publication 107''])
''[[ICRP Glossary]] entry - 22 February 2019''
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[http://www.icrp.org/publication.asp?id=ICRP%20Publication%20107 '''ICRP''' '''''Publication 107'''''] Glossary (Ann. ICRP 38(3), 2008)
<blockquote>This constant, a characteristic of a radionuclide, is defined in terms of an ideal point source as where is the air-kerma rate due to photons (gamma and x rays) of energy greater than δ at a distance l in a vacuum from a point source of the radionuclide of activity A.</blockquote>
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A characteristic constant for a radionuclide, which is defined in terms of an ideal point source, as , where is the air-kerma rate due to photons (gamma and x rays) of energy greater than δ at a distance l in a vacuum from a point source of the radionuclide of activity A.
(Adapted from [http://www.icrp.org/publication.asp?id=ICRP%20Publication%20107 ICRP ''Publication 107''])
''[[ICRP Glossary]] entry - 22 February 2019''
==<span class="mw-collapsible-headline">Previous Versions</span>==
<div id="collapse01" class="mw-collapsible mw-collapsed">
<div class="mw-collapsible-toggle">
<div class="mw-collapsible-toggle-row">
<div class="mw-collapsible-toggle"><span style="color:#ffffff;">[see more/less]</span></div>
</div>
</div>
<br />
<div class="mw-collapsible-content">
[http://www.icrp.org/publication.asp?id=ICRP%20Publication%20107 '''ICRP''' '''''Publication 107'''''] Glossary (Ann. ICRP 38(3), 2008)
<blockquote>This constant, a characteristic of a radionuclide, is defined in terms of an ideal point source as where is the air-kerma rate due to photons (gamma and x rays) of energy greater than δ at a distance l in a vacuum from a point source of the radionuclide of activity A.</blockquote>
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