Characterization of actinide resin for separation of 51,52gMn from bulk target material

Abstract

We report an extraction chromatography-based method via Actinide Resin for the isolation of radio-manganese from both natural chromium and isotopically enriched iron targets for cyclotron production of ^52gMn and ⁵¹Mn. For the separation of ^52gMn from n^atCr, a decay-corrected radiochemical yield of 83.7 ± 8.4% was achieved. For ⁵¹Mn from ⁵⁴Fe, a decay-corrected radiochemical yield of 78 ± 11% was achieved. This automatable method efficiently isolates both radionuclides from accelerator target material.

Keywords: (51)Mn; (52g)Mn; Actinide resin; Extraction chromatography; Radionuclide production.

Figure 1:

Production routes for ^51,52gMn, as well as possible produced contaminants. The cross sections and production rates of these reactions have been measured through previous experiments and discussed in multiple subsequent publications [4], [8], [9], [17]

Figure 2:

Flow diagram of ^52gMn/^natCr separation process

Figure 3:

Flow diagram of ⁵¹Mn/⁵⁴Fe separation process

Figure 4:

D_w values for Mn, Cr, and Fe in varying HNO₃ concentrations

Figure 5:

D_w values for Mn, Cr, and Fe in varying HCl concentrations

Figure 6:

Elution profile and trace metal analysis for the separation of ^52gMn from bulk ^natCr. ^52gMn is retained on the column, and ^natCr is washed from the resin in a 2-column process.

Figure 7:

Elution profile and trace metal analysis for the separation of ⁵¹Mn from enriched ⁵⁴ Fe

Figure 8:

HPGe spectra of the initial solution (a) and final solution (b)

Figure 9:

HPGe spectra of fraction of final solution of ⁵¹Mn