Hoehr Cornelia, Morley Tom, Buckley Ken, Trinczek Michael, Hanemaayer Victoire, Schaffer Paul, Ruth Thomas, Bénard François
TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, Canada.
Appl Radiat Isot. 2012 Oct;70(10):2308-12. doi: 10.1016/j.apradiso.2012.06.004. Epub 2012 Jun 28.
Solutions containing a high concentration (0.325-0.995 g/ml) of natural-abundance ammonium heptamolybdate tetrahydrate ((NH(4))(6)Mo(7)O(24))·4H(2)O were irradiated at 13 MeV on a proton-beam cyclotron using a standard liquid target. (94m)Tc was produced via the (94)Mo(p,n)(94m)Tc reaction with measured yields of 110±20 MBq for the highest concentrated solution using 5 μA proton beams for 60 min. Saturation yields of up to 40±6 MBq/μA were achieved. Pertechnetate was isolated from the target mixture with 70.9±0.7% efficiency using a solid-phase extraction resin.
含有高浓度（0.325 - 0.995克/毫升）天然丰度的四水合七钼酸铵（(NH(4))(6)Mo(7)O(24)）·4H(2)O的溶液，在质子束回旋加速器上使用标准液体靶，以13兆电子伏特进行辐照。通过(94)Mo(p,n)(94m)Tc反应产生(94m)Tc，对于使用5微安质子束照射60分钟的最高浓度溶液，测量产率为110±20兆贝克勒尔。实现了高达40±6兆贝克勒尔/微安的饱和产率。使用固相萃取树脂从靶混合物中分离高锝酸盐，效率为70.9±0.7%。
