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1946 Irradiated Roosevelt Dime

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Tacc's Avatar
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 Posted 02/16/2023  12:24 pm Show Profile   Bookmark this topic Add Tacc to your friends list Get a Link to this Message Number of Subscribers
Hey,
Just posting a pic of one of my IRRADIATED dimes from
The American Museum of Atomic Energy.
My dad collected all the different years and capsule types.
I have 23 of them.
I always thought, couldn't they have used "nicer" quality dimes?
1946-Irradiated-Roosevelt-Dime
1946-Irradiated-Roosevelt-Dime
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HondoB's Avatar
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 Posted 02/16/2023  12:46 pm  Show Profile   Bookmark this reply Add HondoB to your friends list Get a Link to this Reply
Tacc, very cool! Could you tell us more about the history of these coins? And do they glow in the dark?
Inordinately fascinated by bits of metal with strange markings and figures
Edited by HondoB
02/16/2023 12:47 pm
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Tacc's Avatar
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 Posted 02/16/2023  1:05 pm  Show Profile   Bookmark this reply Add Tacc to your friends list Get a Link to this Reply
This one doesn't glow, anymore! I remember testing that in the early 70's.
This was done at Oak Ridge National Laboratory, Tennessee. The dimes where exposed to
a mixture of radioactive antimony and beryllium Gamma Rays in the "dime irradiator."
Each dime was tested with a Geiger counter and then encapsulated. Very minute amounts of radiation
ever remained on the dimes for very long.
More info here:
https://www.orau.org/health-physics...ow%20right).
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BStrauss3's Avatar
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 Posted 02/16/2023  1:22 pm  Show Profile   Bookmark this reply Add BStrauss3 to your friends list Get a Link to this Reply
The half-life of the irradiated atoms is minutes,


Quote:
The half lives for 110Ag and 108Ag are 24.6 seconds and 2.42 minutes, respectively. The basic decay processes are n → p + e- + ν° plus a delayed γ, the two silver isotopes decay to the stable elements 110Cd and 108Cd.


https://sciencedemonstrations.fas.h...ation-silver

Just long enough for the Geiger counter to click when you irradiated your dime. And there aren't enough Cadmium atoms for even an XRF gun to pick up.

A lot of people have one or two, collecting a set is rare and impressive.

When you get a chance, we want pictures!!!!!





-----Burton
50+ year / Life / Emeritus ANA member (joined 12/1/1973)
Life member: Numismatics International, CONECA
Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club
Owned by three cats and a wife of 40+ years (joined 1983)

Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/
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HondoB's Avatar
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 Posted 02/16/2023  2:28 pm  Show Profile   Bookmark this reply Add HondoB to your friends list Get a Link to this Reply
Tacc, I was absolutely unfamiliar with these dimes, so thank you for educating me (and probably many others) about this fascinating topic.

Tacc said:

Quote:
This one doesn't glow, anymore! I remember testing that in the early 70's.

After my gastric emptying test, I hoped for a least a bit of glow, but no luck!
Inordinately fascinated by bits of metal with strange markings and figures
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jbuck's Avatar
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macmercury's Avatar
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 Posted 02/16/2023  3:27 pm  Show Profile   Bookmark this reply Add macmercury to your friends list Get a Link to this Reply
Good idea to start a new collectible area, some collect by year, and few dates are more difficult to assemble.

These are still affordable and available.
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Dearborn's Avatar
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 Posted 02/16/2023  3:54 pm  Show Profile   Bookmark this reply Add Dearborn to your friends list Get a Link to this Reply
wow, very cool! I didn't know that was even a thing.
The only thing I have that has been Irradiated is ME! (May 1986)
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Tacc's Avatar
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 Posted 02/16/2023  8:02 pm  Show Profile   Bookmark this reply Add Tacc to your friends list Get a Link to this Reply
I had a nice Ceasar Salad for dinner, and the lettuce had been irradiated. Tasted pretty good.
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CelticKnot's Avatar
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 Posted 02/16/2023  8:47 pm  Show Profile   Bookmark this reply Add CelticKnot to your friends list Get a Link to this Reply
These are really cool, Taac, thanks for sharing. And if I haven't said it in another topic:

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HondoB's Avatar
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 Posted 02/16/2023  8:51 pm  Show Profile   Bookmark this reply Add HondoB to your friends list Get a Link to this Reply
Tacc, you really piqued my curiosity. Just picked this one up for a very reasonable price on the bay. And yes, after looking at many offerings it seems that they didn't necessarily pick out the finest dimes to zap.
1946-Irradiated-Roosevelt-Dime
Inordinately fascinated by bits of metal with strange markings and figures
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Coinfrog's Avatar
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 Posted 02/16/2023  9:16 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Duh, why is the reverse blank on the OP's coin?
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HondoB's Avatar
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 Posted 02/16/2023  9:28 pm  Show Profile   Bookmark this reply Add HondoB to your friends list Get a Link to this Reply
These irradiated dimes are encased in a holder.
Inordinately fascinated by bits of metal with strange markings and figures
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Tacc's Avatar
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 Posted 02/17/2023  11:21 am  Show Profile   Bookmark this reply Add Tacc to your friends list Get a Link to this Reply
Correct Hondo.
OH man I don't have a 1940 Mercury Irradiated.
Edited by Tacc
02/17/2023 11:22 am
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Dearborn's Avatar
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Tacc's Avatar
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 Posted 02/17/2023  12:14 pm  Show Profile   Bookmark this reply Add Tacc to your friends list Get a Link to this Reply
I just posted one of my 1946's on ebay....
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