<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Dear George,<br></div><div>Now we know that we can use Ga target. As you say, there could be many reasons for<br data-mce-bogus="1"></div><div>the discrepancy. An obvious ones to me are the alignment error, amount of target material,<br data-mce-bogus="1"></div><div>assumed purity of the target, etc.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Let me take the opportunity to say how impressed I am with you for the relentless effort<br data-mce-bogus="1"></div><div>you put in to make this test happen. After being turned away from one hall and then the<br data-mce-bogus="1"></div><div>other, you persisted, carried out simulations and the test plans and more. Thanks to Kevin<br data-mce-bogus="1"></div><div>for making things happen at lightening speed.<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>-H<br data-mce-bogus="1"></div><div><br></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"George Kharashvili" <georgek@jlab.org><br><b>To: </b>"isotope-prod" <isotope-prod@jlab.org><br><b>Sent: </b>Wednesday, June 15, 2016 11:31:37 AM<br><b>Subject: </b>[Isotope-prod] 18.5 MeV test - preliminary results<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">The first look at the gallium activation test suggests that we produced ~4500 Bq of Cu-67. <br>Irradiation was done using 18.5 MeV beam on 1mm W radiator for 1 hour at average current of 2.5 microA, or 46 W-h. We had predicted 7000 Bq production in a 50 W-h irradiation. There are several differences between the model and irradiation, so I need to rerun the model and do a little more detailed analysis of the sample.<br>More to follow during the next couple of days.<br><br>--<br>George Kharashvili<br>Jefferson Lab Radiation Control<br>757-269-6435<br>_______________________________________________<br>Isotope-prod mailing list<br>Isotope-prod@jlab.org<br>https://mailman.jlab.org/mailman/listinfo/isotope-prod<br></div></div></body></html>