Separation of carrier free152, 153Dy and151–153Tb from16O7+ irradiated CeO2 by liquid-liquid extraction

Abstract

Charged particle activation of natural CeO 2 with -80 MeV 1607+ results in the formation of carrier free isotopes, 151,152,153Dy and their daughter products, 151,152,~53Tb, in the matrix. The liquid cation exchanger, HDEHP, has effectively been utilised as an extractant in the quantitative separation of the activation products namely 151,152,153Dy, 151,152,153Tb from the bulk target matrix ofceric oxide.

Investigation on the production and isolation of 149,150,151Tb from 12C irradiated natural praseodymium target

“…The optimum separation conditions and the corresponding separation factors are presented in Table 3. The extraction patterns of nca and bulk lanthanides are quite confirmative with our earlier experiments for production and separation of nca lanthanides [10][11][12]. It is noteworthy to mention that due to finer adjustment of HDEHP strength, and addition of hydrazine sulfate in the second step of extraction, we obtained much improved Table 4.…”

“…In 1999, Lahiri et al produced nca 150−153 Dy and the daughter products 150−153 Tb using the 12 C and 16 O induced reactions on natural Nd 2 O 3 and CeO 2 targets respectively at 80 MeV incident energy. The nca Dy and Tb radionuclides were separated from the natural Nd target matrix by LLX using liquid cation exchanger di-(2-ethylhexyl)phosphoric acid (HDEHP) dissolved in cyclohexane as organic phase and HCl as aqueous phase [10,11]. The group also reported the production of nca 151,152 Tb radionuclides by 16 O induced reaction on lanthanum oxide at ∼ 78 MeV incident energy.…”

Across the energy scale: from eV to GeV

“…Heavy ion activation and separation of no-carrieradded (NCA) radionuclides we planned first heavy ion activation by irradiating nat CeO 2 target by 85 MeV 16 O projectile with the aim to produce NCA dysprosium and terbium radionuclides [15]. Before irradiation, theoretical excitation function was calculated by Monte Carlo simulation code based on projectile angular momentum coupled evaporation (PACE-2) [16].…”

Separation of No-Carrier Added 147,149Gd and 147Eu Produced in 70 MeV 11B Irradiated Praseodymium Foil Target

“…The major advantage of heavy ion assisted production of carrier-free rare earth radioisotopes is that the product radionuclides are well separated by their atomic number from the target element which helps to overcome the monotonic difficulty of Separation arising from the intrinsic congenericity of the lanthanide series Clements [11,12].…”