ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Migration of radioactive elements in a tube with temperature gradient

J. Mérinis and G. Bouissieres

Inst. Phys. Nucl., Orsay, Fr.

Abstract: The mechanism of the migration of radioactive elements in a quartz tube filled with gas and deposited in a metal tube with a temp. gradient is described. One end of the tube was heated at 600-1200°, the other end was cooled down to 60°. This equation was detd. for the migration of the radioactive elements: t = Kexp (Q/RTm), where t is the time of the duration of the migration, Tm is the abs. temp. of the zone with the max. sediment, Q is the heat of the molar adsorption of the sublimated matter on the quartz, R is a gas const., and K is a const. This method was applied for the sepn. and purification of some radioactive elements. An example of the app. is shown for the sepn. of La and Eu.

Full paper in Portable Document Format: 218a625.pdf (in French)

Chemical Papers 21 (8) 625–628 (1967)