[Isotope-prod] Isotopes

[Wells, Douglas P.]

Here is a potentially-useful patent on Ra purification that is relevant to this discussion, though the authors envision charge-particle reactions rather than photo-nuclear:

http://www.google.com/patents/US8153087



From: Isotope-prod [mailto:isotope-prod-bounces at jlab.org] On Behalf Of Wells, Douglas P.
Sent: Thursday, November 05, 2015 2:40 PM
To: Hari Areti; Andrew Hutton
Cc: Neil George
Subject: Re: [Isotope-prod] Isotopes

Have we asked ourselves, in the case of 226Ra targets, how pure we have to be?   The thing about “milking” 225Ac from 225Ra is that the “milking” chemistry process (depending on the process) might exclude common contaminants of Ra.   Indeed, we certainly do not need enriched Ra and might not even need very high purity Ra.

Just a thought.

D

From: Isotope-prod [mailto:isotope-prod-bounces at jlab.org] On Behalf Of Hari Areti
Sent: Thursday, November 05, 2015 2:09 PM
To: Andrew Hutton
Cc: Neil George
Subject: Re: [Isotope-prod] Isotopes

Dear Andrew,

Thanks for the encouraging information. Last time I contacted Dennis, he could not come up
with a radium source. I will contact him regarding Th-230 and see whether he can help.

-H

________________________________
From: "Andrew Hutton" <andrew at jlab.org<mailto:andrew at jlab.org>>
To: "Neil George" <Isotope-prod at jlab.org<mailto:Isotope-prod at jlab.org>>
Cc: "Hari Areti" <areti at jlab.org<mailto:areti at jlab.org>>
Sent: Thursday, November 5, 2015 3:45:15 PM
Subject: Isotopes

George

I was able to speak to Jehanne today, so I told her the progress you are making on Isotopes.  Her comments:

Argonne is making a push to make Cu67 with their low energy (copper) linac.  I think (but did not get confirmation) that this is using Zinc.  She would be interested in our proposal as it is completely different.

I told her about our concerns about the cost of Radium to make Actinium 225.  She said that they are currently making Ac225 by milking Thorium from the weapons program.  She stated that she has access to all of the weapons stockpile so if there is an isotope that we are interested in, we should ask Dennis Phillips as he is the Isotope R&D Manager.  He is also in charge of the Actinium225 program, so she strongly encouraged us to talk to him.

Jehanne seemed excited that we are making progress and is waiting eagerly for our ideas.

Hope this helps.

Andrew
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