http://icrpaedia.org/index.php?action=history&feed=atom&title=Annihilation_photonsAnnihilation photons - Revision history2026-05-01T14:36:58ZRevision history for this page on the wikiMediaWiki 1.32.0http://icrpaedia.org/index.php?title=Annihilation_photons&diff=2016&oldid=prevKaren Clement at 17:36, 12 September 20192019-09-12T17:36:20Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 17:36, 12 September 2019</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The electromagnetic radiation (photons) emitted as a positron–electron pair undergoes annihilation. Annihilation generally occurs after the positron has lost its initial kinetic energy to the absorbing medium, and two photons, each equivalent in energy to the rest mass of an electron (m0c2 = 0.511 MeV), are created in opposite directions. The number of annihilation photons is taken to be twice the number of positrons emitted in beta-plus decay. ([[ICRP Publication 107]], 2007)</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The electromagnetic radiation (photons) emitted as a positron–electron pair undergoes annihilation. Annihilation generally occurs after the positron has lost its initial kinetic energy to the absorbing medium, and two photons, each equivalent in energy to the rest mass of an electron (m0c2 = 0.511 MeV), are created in opposite directions. The number of annihilation photons is taken to be twice the number of positrons emitted in beta-plus decay. ([[ICRP Publication 107]], 2007)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>''<del class="diffchange diffchange-inline">[[</del>ICRP Glossary<del class="diffchange diffchange-inline">]] </del>entry - June 2019''</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>''ICRP Glossary entry - June 2019<ins class="diffchange diffchange-inline">''</ins></div></td></tr>
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</table>Karen Clementhttp://icrpaedia.org/index.php?title=Annihilation_photons&diff=892&oldid=prevIntern: Created page with "The electromagnetic radiation (photons) emitted as a positron–electron pair undergoes annihilation. Annihilation generally occurs after the positron has lost its initial kin..."2019-06-04T18:12:01Z<p>Created page with "The electromagnetic radiation (photons) emitted as a positron–electron pair undergoes annihilation. Annihilation generally occurs after the positron has lost its initial kin..."</p>
<p><b>New page</b></p><div>The electromagnetic radiation (photons) emitted as a positron–electron pair undergoes annihilation. Annihilation generally occurs after the positron has lost its initial kinetic energy to the absorbing medium, and two photons, each equivalent in energy to the rest mass of an electron (m0c2 = 0.511 MeV), are created in opposite directions. The number of annihilation photons is taken to be twice the number of positrons emitted in beta-plus decay. ([[ICRP Publication 107]], 2007)<br />
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''[[ICRP Glossary]] entry - June 2019''</div>Intern