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<p>[QUOTE="jaceravone, post: 364489, member: 9474"]Well, I could swear that there was a thread about these coins, but after many key word searches, I only came up with one mention of these coins from a post by Drusus from May of last year. </p><p> </p><p>I remember reading the thread about these a while back and so today when I was in my local coin shop I saw one of the assistants searching through a box of junk coins that someone brought in. Tons of people walk in everyday with "grandpa's" collection of old coins - which are all circulated - but you will never know what you will find.... just see my post from the other day titled "I didn't win again" (haven't learned how to link previous threads yet) Anyway, I saw this and asked him how much? At first he said $3, but then said take it. Sweet! Heck, I gave them half my paycheck last week - all I have left is my right kidney and a pint of blood and my wife has dibs on that!!! Anyway, I stole the post that Drusus wrote last may along with his link. Here it is:</p><p> </p><p><a href="http://www.orau.org/ptp/collection/medalsmementoes/dimes.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.orau.org/ptp/collection/medalsmementoes/dimes.htm" rel="nofollow">http://www.orau.org/ptp/collection/m...toes/dimes.htm</a></p><p><br /></p><p>"One of the most popular exhibits in the American Museum of Atomic Energy is a "dime irradiator." To date, more than 250,000 dimes have been irradiated, encased in plastic and returned to their owners as souvenirs. The irradiator works as follows: A mixture of radioactive antimony and beryllium is enclosed in a lead container. Gamma rays from the antimony are absorbed by the beryllium atoms and a neutron is expelled by the beryllium atom in the process.</p><p><br /></p><p>These neutrons, having no electrical charge, penetrate silver atoms in the dime. Instead of remaining normal silver-109, they become radioactive silver-110. After irradiation, the dime is dropped out through a slot in the lead container and rests momentarily before a Geiger tube so that its radioactivity may be demonstrated. It is then encased in the souvenir container. Radioactive silver, with a half-life of 22 seconds, decays rapidly to cadmium-110 (In 22 seconds, half of the radioactivity in each dime is gone, in another 22 seconds half the remainder goes, and so on until all the silver-110 has become cadmium). Only an exceedingly minute fraction of the silver atoms have been made radioactive." </p><p><br /></p><p>Here are my pics:[/QUOTE]</p><p><br /></p>
[QUOTE="jaceravone, post: 364489, member: 9474"]Well, I could swear that there was a thread about these coins, but after many key word searches, I only came up with one mention of these coins from a post by Drusus from May of last year. I remember reading the thread about these a while back and so today when I was in my local coin shop I saw one of the assistants searching through a box of junk coins that someone brought in. Tons of people walk in everyday with "grandpa's" collection of old coins - which are all circulated - but you will never know what you will find.... just see my post from the other day titled "I didn't win again" (haven't learned how to link previous threads yet) Anyway, I saw this and asked him how much? At first he said $3, but then said take it. Sweet! Heck, I gave them half my paycheck last week - all I have left is my right kidney and a pint of blood and my wife has dibs on that!!! Anyway, I stole the post that Drusus wrote last may along with his link. Here it is: [URL="http://www.orau.org/ptp/collection/medalsmementoes/dimes.htm"]http://www.orau.org/ptp/collection/m...toes/dimes.htm[/URL] "One of the most popular exhibits in the American Museum of Atomic Energy is a "dime irradiator." To date, more than 250,000 dimes have been irradiated, encased in plastic and returned to their owners as souvenirs. The irradiator works as follows: A mixture of radioactive antimony and beryllium is enclosed in a lead container. Gamma rays from the antimony are absorbed by the beryllium atoms and a neutron is expelled by the beryllium atom in the process. These neutrons, having no electrical charge, penetrate silver atoms in the dime. Instead of remaining normal silver-109, they become radioactive silver-110. After irradiation, the dime is dropped out through a slot in the lead container and rests momentarily before a Geiger tube so that its radioactivity may be demonstrated. It is then encased in the souvenir container. Radioactive silver, with a half-life of 22 seconds, decays rapidly to cadmium-110 (In 22 seconds, half of the radioactivity in each dime is gone, in another 22 seconds half the remainder goes, and so on until all the silver-110 has become cadmium). Only an exceedingly minute fraction of the silver atoms have been made radioactive." Here are my pics:[/QUOTE]
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