Development of a rapid radiochemical procedure for the separation of /sup 235m/U from /sup 239/Pu

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We have developed a rapid radiochemical procedure for the isolation and purification of /sup 235m/U (t/sub 1/2/ = 26 minutes) from /sup 239/Pu samples up to 250 mg. Purpose of developing the procedure was to measure the thermal neutron fission cross section of the isomeric meta state of /sup 235/U. We used rapid small-scale anion exchange columns that absorbed uranium in concentrated HBr but did not absorb plutonium. Uranium was easily eluted with very dilute HF. The separation time required 25 to 35 minutes. We were able to attain a separation factor of uranium from plutonium of approximately 1 x ... continued below

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Pages: 12

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Attrep, M. Jr.; Efurd, D.W. & Roensch, F.R. January 1, 1987.

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We have developed a rapid radiochemical procedure for the isolation and purification of /sup 235m/U (t/sub 1/2/ = 26 minutes) from /sup 239/Pu samples up to 250 mg. Purpose of developing the procedure was to measure the thermal neutron fission cross section of the isomeric meta state of /sup 235/U. We used rapid small-scale anion exchange columns that absorbed uranium in concentrated HBr but did not absorb plutonium. Uranium was easily eluted with very dilute HF. The separation time required 25 to 35 minutes. We were able to attain a separation factor of uranium from plutonium of approximately 1 x 10/sup 10/ with samples ranging from 1 x 10/sup 10/ to 3 x 10/sup 11/. The ratio of the fission cross sections for the meta to ground state was measured to be 1.42. 4 figs., 1 tab.

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Pages: 12

Notes

NTIS, PC A03/MF A01; 1.

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  • Symposium on nuclear, geo- and cosmochemistry, Little Rock, AR, USA, 2 Dec 1987

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  • Other: DE88006454
  • Report No.: LA-UR-88-592
  • Report No.: CONF-871270-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5500760
  • Archival Resource Key: ark:/67531/metadc1093656

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1987

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  • Feb. 10, 2018, 10:06 p.m.

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  • Feb. 22, 2018, 1:26 p.m.

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Attrep, M. Jr.; Efurd, D.W. & Roensch, F.R. Development of a rapid radiochemical procedure for the separation of /sup 235m/U from /sup 239/Pu, article, January 1, 1987; United States. (digital.library.unt.edu/ark:/67531/metadc1093656/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.