用于能谱γ射线源的放射性核素的制备方法及其标准化——2. 铕 - 152

Methods of producing radionuclides for spectrometric gamma-ray sources and their standardization--2. Europium-152.

作者信息

Danilenko V N, Gromova N P, Konstantinov A A, Kurenkov N V, Malinin A B, Matveev S V, Sazonova T E, Stepanov E K, Sepman S V, Tronova I N

机构信息

All-Union Research Institute of Physico-technical and Radiotechnical Measurements, Mendeleevo, Moskovskaya obl., U.S.S.R.

出版信息

Int J Rad Appl Instrum A. 1989;40(8):711-3. doi: 10.1016/0883-2889(89)90083-x.

DOI:10.1016/0883-2889(89)90083-x

PMID:2548979

Abstract

The radionuclide 152Eu was produced by irradiating 151Eu2O3 or 151EuCl3 enriched to 98.9% with thermal neutrons. 152Eu was separated from rare-earth impurities by extraction chromatography on a column using 0.6 M nitric acid eluent. The specific activity of the 152Eu was 1-10 Ci/g of Eu. The impurity of the 154Eu did not exceed 0.1%. The activity standardization of 152Eu was carried out by extrapolation of 4 pi (beta, e, x)-gamma coincidences. The relative gamma-ray intensities for 28 gamma-ray energies emitted in 152Eu decay have been measured.

摘要

通过用热中子辐照富集至98.9%的151Eu2O3或151EuCl3来制备放射性核素152Eu。使用0.6M硝酸洗脱液通过柱上萃取色谱法将152Eu与稀土杂质分离。152Eu的比活度为1 - 10 Ci/g Eu。154Eu的杂质不超过0.1%。152Eu的活度标准化通过4π（β，e，x）-γ符合外推法进行。已测量了152Eu衰变中发射的28种γ射线能量的相对γ射线强度。