"A Germanium detector spectrum showing the annihilation radiation peak (under the arrow). Note the width of the peak compared to the other gamma rays visible in the spectrum." from the Wikipedia article "<a href="https://en.wikipedia.org/wiki/Annihilation_radiation" class="extiw" title="w:Annihilation radiation">Annihilation radiation</a>"
<a href="https://en.wikipedia.org/wiki/User:Hidesert" class="extiw" title="wikipedia:User:Hidesert">Hidesert</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
7 March 2007 (original upload date)
<span class="int-own-work" lang="en">Own work</span> (<span lang="en" dir="ltr">Original text: <i><bdi lang="">I created this image.</bdi></i></span>)