Cross-sections for formation of up>99m up>Tc through up>nat up>Ru(n,x) up>99m up>Tc reaction induced by neutrons at 13.5 and 14.8 MeV
- 作者：Junhua Luo
- 关键词：Neutrons ; Nuclear reaction ; Cross section ; Ruthenium ; Technetium-99m
- 刊名：Radiation Physics and Chemistry
- 出版年：2012
- 期刊代码：68_0969806x
- 类别：ph
- 出版时间：May, 2012
- 卷：81
- 期：5
- 页码：495-498
- 文件大小：206 K
摘要
The cross-sections for formation of metastable state of up>99 up>Tc (up>99m up>Tc, 140.511 keV, 6.01 h) through up>nat up>Ru(n,x)up>99m up>Tc reaction induced by 13.5 MeV and 14.8 MeV neutrons were measured. Fast neutrons were produced via the up>3 up>H(d,n)up>4 up>He reaction on the K-400 neutron generator. Induced gamma activities were measured by a high-resolution gamma-ray spectrometer with a high-purity germanium (HpGe) detector. Measurements were corrected for gamma-ray attenuations, dead time and fluctuation of neutron flux. Data for up>nat up>Ru(n,x)up>99m up>Tc reaction cross sections are reported to be 9.6卤1.5 and 9.2卤1.1 mb at 13.5卤0.2 and 14.8卤0.2 MeV incident neutron energies, respectively. Results were compared with the data by other anthors.