水溶液中Np、Pu、Am和Cm同时电沉积制备α测量源  

Simutaneous Electrodeposition Procedure of Transuranic Elements Np,Pu,Am and Cm for Alpha Spectrometric Measurement

作　　者：杜丽丽[1] 代义华[1] 张海涛[1] 凡金龙[1] 商建波[1] 王旭辉[1] DU Li li, DAI Yi hua, ZHANG Hai tao, FAN Jin long, SHANG Jian bo, WANG Xu hui(Northwest Institute of Nuclear Technology, Xi＇an 710024, Chin)

机构地区：[1]西北核技术研究所,陕西西安710024

出　　处：《核化学与放射化学》2018年第3期145-150,共6页Journal of Nuclear and Radiochemistry

摘　　要：为制备高分辨率Np、Pu、Am和Cm的α混合测量源,研究了电沉积液介质浓度、pH值、电流密度、电沉积时间等条件对电沉积效率及沉积源质量的影响。结果表明,在pH为2.0~2.5的0.2mol/L硫酸铵介质中,电流密度为0.40~0.50A/cm2,室温条件下电沉积60min,^(237)Np、^(238)Pu、^(243)Am和^(244)Cm在阴极不锈钢片上的电沉积效率均大于96%,制备的α测量源能量分辨率较好。This method describes a simultaneous electrodeposition procedure that is specifically adapted for the source preparation of transuranic elements including Np,Pu,Am and Cm for high resolution alpha spectrometric measurement.The effects of electrolyte concentration,pH of buffer,current density and the plating time on the source quality were examined in order to optimize the conditions and to obtain the maximum yield.The electrodeposition yields of 237Np,238Pu,243Am and 244Cm are higher than 96% with the ammonium sulfate concentration of 0.2 mol/L,pH ranging from 2.0 to 2.5,current density at 0.40-0.50 A/cm2,and plating time over 60 min.In the light of good reproducibility and robustness of the process,the recommended procedure for rapid simultaneous quantitative electrodeposition of Np,Pu,Am and Cm is suitable to preparing high quality mixed transuranic alpha sources.

关 键 词：电沉积 高分辨率α源 237Np 238Pu 243Am 244Cm 

分 类 号：O614.35[理学—无机化学]