Spallation and Fission Yields in the Interactions of Tantalum,Tungsten,and Gold with 500-MeV Protons
Spallation and Fission Yields in the Interactions of Tantalum,Tungsten,and Gold with 500-MeV Protons
复制标题
钽、钨和金与 500 MeV 质子相互作用中的散裂和裂变产率
DOI：
--
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
K. Kondo
中科院分区：
文献类型：
--
作者：
Y. Asano;S. Mori;M. Noguchi;M. Sakano;K. Katoh;K. Kondo
用Ge（Li）γ谱仪测量了钽、钨和金与500 MeV质子核反应中的中子和裂变产物的生成截面，并对谱进行了计算机分析。金的测量结果与490 MeV质子测量的现有数据吻合良好。钽数据仅与先前在340和450 MeV下测量的数据定性一致。钽裂变产物截面的质量依赖性似乎与在340和450 MeV获得的质量-产额曲线一致。裂变产物的质量产额分布表明，在高能质子-核相互作用的两步机制中，裂变过程发生在蒸发过程的中间或接近末尾。
Formation cross sections of spallation and fission products in the nuclear reactions of tantalum, tungsten, and gold with 500-MeV protons were measured with a Ge(Li) γ-ray spectrometer followed by computer analysis of the spectra. The measured results for gold are in good agreement with existing data measured with 490-MeV protons. The tantalum data are only in qualitative agreement with data measured previously at 340 and 450 MeV. The mass dependence of the cross sections of the fission products for tantalum seems to be in agreement with the mass-yield curves obtained at 340 and 450 MeV. The mass-yield distributions for fission products may indicate that the fission process takes place at the middle or near the end of the evaporation process in the two step mechanism of high-energy proton-nucleus interactions.