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RE: I-126 in I-125



Brian



If the I-125 is produced from the Xe-124( n,g) process there should not be

any I-126 in it. That is the reason that Nordion uses this method at their

or AECL's CRL reactors.



I-125 can also be produced by Sb-123 (alpha, 2n) which will also produce

I-126 from the Sb-123 (alpha,n) reaction.



John

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-----Original Message-----

From: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu]On Behalf Of Brian Rees

Sent: December 16, 2003 12:12 PM

To: radsafe Mail list

Subject: I-126 in I-125





Where would a I-126 impurity arise from in a I-125 source?  I found one

ref. that lists the production method of I-125 as a Xe-124 (n,g), Xe-125,

then decay of Xe-125 to I-125.



Thanks in advance,

Brian Rees



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