DETERMINATION OF 63Ni ACTIVITY IN NPP CONSTRUCTION MATERIALS

被引：0
|
作者：
Zheltonozhskyi, V. O. [1 ]
Myznikov, D. E. [1 ]
Savrasov, A. M. [1 ]
Slisenko, V. I. [1 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Nucl Res, Kiev, Ukraine
来源：
NUCLEAR PHYSICS AND ATOMIC ENERGY | 2022年 / 23卷 / 03期
关键词：
flux-weighted average yields; photoactivation method; gamma-spectrometry; nickel; cobalt;
D O I：
10.15407/jnpae2022.03.207
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The gamma-spectra were measured of the structural materials of the 2nd unit of the Chornobyl NPP which were irradiated by bremsstrahlung with end-point energy 37 MeV. Using the ratio of the Co-57 and Co-58 activities, the nickel and cobalt masses ratio was determined. Using the obtained data and the measured Co-60 activity in the studied samples, a method for determining of the Ni-63 activity was developed. Radiochemical validation of the created method was performed and good quantitative agreement of Ni-63 activities obtained by spectroscopic and radiochemical methods was obtained.
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页码：207 / 211
页数：5
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