[Isotope-prod] Cu-67 pricing

[Pavel Degtiarenko]

Dear All,

I just wanted to mention that not all options of working with natural Ga 
are investigated and rejected. The final choice should be the result of 
the overall cost optimization, and weighting of all pluses and minuses - 
essentially that should be decided when the R&D is done, or during the R&D.

Clearly natural Ga has the advantage of the price and the optimal size 
of the target as the result. On the other hand, Ga-71 is a clear winner 
for radiological purity and the "undesirables" production. There is 
however a gray area that's not investigated yet. Using natural Ga, and 
going up in energy from 18.5 MeV, we should find the beam energy at 
which the radiological purity is still "good enough", say, less than 1% 
of Cu-64 (by the way, is 10% of Cu-64 "good enough"?). At 18.5 MeV it's 
exact zero, and it's probably not necessary.

The same type of the energy optimization question #2: at 18.5 MeV the 
production of the major undesirable isotope of Ga-67 is zero. At what 
energy its production becomes unacceptably high. What would be the 
unacceptably high level of Ga-67 production. I would argue that having 
that level at 2-5 times that of Cu-67 wouldn't be too bad and won't 
change the handling and separation procedures dramatically. But may be 
if it's even a factor of 100, that wouldn't be that bad either? Such 
limit should be investigated.

When we find and verify these energies during the R&D stage, we should 
make the choice. May be we could run larger volume optimized natural Ga 
target at one of these optimal energies, and concentrate the design 
efforts on having a higher beam power, and thus keep the same production 
rates of Cu-67 with acceptable purity, using natural Ga.

Best regards,
Pavel

On 2/27/2017 9:19 AM, Hari Areti wrote:
> 99;8% isotopically pure GA-71 is $3.26/mg.
> -H
>
> ------------------------------------------------------------------------
> *From: *"George Kharashvili" <georgek at jlab.org>
> *To: *"isotope-prod" <isotope-prod at jlab.org>
> *Sent: *Friday, February 24, 2017 1:37:14 PM
> *Subject: *[Isotope-prod] Cu-67 pricing
>
> Dear all,
>
> I requested a Cu-67 quote from Oak Ridge after our meeting yesterday. 
> I was told that is is not currently available and may become available 
> in a few months time, which is when they would give us an official 
> quote. But they kindIy provided an estimate (not a quote) of $526.00 
> per mCi of Cu-67 with a $4,435.00 dispensing/Packaging/Shipment 
> charger per order.
> Below are some details about what they offer for Cu-67. I would like 
> to point out the radiopurity info: 60% activity being Cu-64! I believe 
> this is where our method can be superior: using 40-50 MeV beam on 
> Ga-71 target, we can end up with virtually no Cu-64 in our final product.
>
>
> --
> George Kharashvili
> Jefferson Lab Radiation Control
> 757-269-6435
>
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