Production of 166Ho and 153Sm using hot atom reactions in neutron irradiated tris(cyclopentadienyl) compounds

• Autorzy: Nassan L. , Achkar B. , Yassine T.
• Języki publikacji: EN

Abstrakty

EN

The behavior of a recoiled 166Ho and 153Sm resulting from the reactions 165Ho(n,gamma)166Ho and 152Sm(n,gamma)153Sm in the organometallic compounds tris(cyclopentadienyl)holmium (C5H5)3Ho(III), and tris(cyclopentadienyl)samarium (C5H5)3Sm(III) were investigated. Several chemical separation methods were developed for each compound to separate the recoil products from the irradiated compound. Retention value of 0.2 �} 0.1% was obtained for (C5H5)3Ho(III) using sublimation. Another value of retention of 0.4 plus or minus 0.1% resulted when column chromatography was used. Paper chromatography (using Whatman Chr. 1 and Whatman Chr. 4) gave different retention values of about 0.11 plus or minus 0.05%, and 0.4 plus or minus 0.1%, respectively. Similar behavior of 153Sm in irradiated (C5H5)3Sm(III) was found when paper chromatography was used for separation. The different retention values given by different methods of separation were discussed. An important improvement of the specific activity was achieved as compared with other published results in this field. The obtained results pointed out that tris(cyclopentadienyl)holmium and samarium could be used to produce high specific activity of 166Ho and 153Sm in the Syrian low flux miniature nuclear source reactor (MNSR), where the averaged achieved enrichment factor for holmium compound was found to be greater than 1.6 x 107.

Słowa kluczowe

EN

hot atom reactions; holmium-166; miniature nuclear source reactor (MNSR)

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2011
• Tom: Vol. 56, No. 4
• Strony: 263--267
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Nassan L.

autor

Achkar B.

autor

Yassine T.

• Nuclear Engineering Department, Atomic Energy Commission of Syria, P. O. Box 6091, Damascus, Syria, Tel.: [phone], Fax: [phone],

Bibliografia

• 1. Burgess J, Cotton SA, Criddle AJ et al. (1995) Dictionary of organometallic compounds. Chemical database, 2nd ed. Chapman & Hall, London
• 2. Chakraborty S, Unni PR, Venkatesh M, Pillai MRA (2002) Feasibility study for production of 175Yb a promising therapeutic radionuclide. Appl Radiat Isot 57:295–301
• 3. Collins KE, Catral JC, Toh WT, Detera SD, Kapauan PA (1972) A novel preparation of high specific activity radionuclides. Radiochem Radioanal Lett 11;5:303–305
• 4. Crabtree RH (2005) The organometallic chemistry of the transition metals, 4th ed. John Wiley & Sons, INC Publication, New Jersey
• 5. Iqbal M, Ejas M (1978) Enrichment of 51Cr through Szilard-Chalmers effect. J Radioanal Chem 45:185–188
• 6. Mani RS, Chowdhary SY (1966) Preparation of chromium-51 of high specific activity for medical use. Curr Sci 9:230–232
• 7. Mausner LF, Mirzadeh S, Srivastava SC (1992) Improved specific activity of reactor produced 117mSn with the Szilard--Chalmers process. Appl Radiat Isot 43;9:1117–1122
• 8. Mednis IV (1991) Cross section for nuclear reactions for neutron activation analysis. Izdatelstvo ‘Zinatne’, Riga
• 9. Sekine T, Kimura K, Yoshihara K (1986) Application of nuclear recoil to radioisotope enrichment of copper-64.J Nucl Sci Technol 23;12:1064–1068
• 10. Walton GN (1979) Source papers in hot atom chemistry. Prog Nucl Energy 4:183–214
• 11. Wiles DR (1973) The radiochemistry of organometallic compounds. Adv Organomet Chem 11:207–252
• 12. Yassine T (1987) The hot atom chemistry of some metal complexes and its application to radioisotope production. PhD thesis, Salford University
• 13. Zeisler SK, Backer DW, Weber K (1999) Szilard-Chalmers effect in praseodymium complexes. J Radioanal Nucl Chem 240:637–641
• 14. Zeisler SK, Weber K (1998) Szilard-Chalmers effect in holmium complexes. J Radioanal Nucl Chem 227:105–109