转化器目标化学——放射分析化学面临的新挑战。

Converter target chemistry - A new challenge to radioanalytical chemistry.

作者信息

Choudhury Dibyasree, Lahiri Susanta

机构信息

Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India.

Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, India.

出版信息

Appl Radiat Isot. 2018 Jul;137:33-40. doi: 10.1016/j.apradiso.2018.03.002. Epub 2018 Mar 10.

DOI:10.1016/j.apradiso.2018.03.002

PMID:29550616

Abstract

The 1-2 GeV proton induced spallation reaction on the high Z materials like Hg, or lead bismuth eutectic (LBE), popularly known as converter targets, will produce strong flux of fast neutrons which would further react with fissile materials to produce intense radioactive ion beam (RIB). LBE offers suitability for use as converters over Hg but it suffers from the demerit of radiotoxic polonium production. These targets may be viewed as a store house of clinically important and other exotic radionuclides. For application of those radionuclides, radiochemical separation from bulk target material is of utmost importance.

摘要

能量为1 - 2 GeV的质子与高Z材料（如汞或铅铋共晶（LBE），通常称为转换靶）发生散裂反应，会产生强大的快中子通量，这些快中子会进一步与裂变材料反应，产生强放射性离子束（RIB）。与汞相比，LBE更适合用作转换靶，但它存在产生具有放射性毒性的钋的缺点。这些靶可被视为临床重要和其他稀有放射性核素的储存库。对于这些放射性核素的应用，从大量靶材料中进行放射化学分离至关重要。