<sup>140</sup>Ba → <sup>140</sup>La radionuclide generator: reverse-tandem scheme
Jakhongir A. DadakhanovInstitute of Nuclear PhysicsA. VelichkovJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , RussiaD. V. KaraivanovJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , RussiaAyagoz BaimukhanovaInstitute of Nuclear Physics , 1 Ibragimova St. , Almaty , 050032 , Republic of KazakhstanN.T. TemerbulatovaInstitute of Nuclear Physics , 1 Ibragimova St. , Almaty , 050032 , Republic of KazakhstanG. MarinovJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , RussiaA. MarinovaJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , RussiaMariya Yu. VorobevaJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , RussiaNikita YushinJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , RussiaHamad M. AlshoubakiJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , RussiaDmitry FilosofovJoint Institute for Nuclear Research , 6 Joliot-Curie St. , Dubna , 141980 , Russia
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Abstract The paper introduces two reverse-tandem schemes of the 140 Ba → 140 La radionuclide generator which allow obtaining the daughter radionuclide 140 La for different applications in nuclear spectroscopy and as a tracer for radiochemical separations. The tandem generator system includes two stages: a chromatographic separation of parent and daughter radionuclides based on the main reverse column (cation-exchange column), and purification based on tandem column (extraction column). The main chromatographic separation is carried out in acetic acid media. Use of 140 La preparation with high specific activity in the perturbed angular γγ-correlation method is discussed.
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