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中国工程物理研究院核物理与化学研究所
Published:01 September 2011
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[1]窦海峰,李润东,冷军,袁姝,唐凤平.中子深度分析的能量展宽修正[J].核技术,2011,34(09):689-692.
DOU Haifeng LI Rundong LENG Jun YUAN Shu TANG Fengping. The correction of ions energy spread in neutron depth profiling[J]. Nuclear techniques, 2011, 34(9): 689-692.
离子在样品内的能量岐离将改变中子深度分析(neutron depth profiling
NDP)的多道离子能谱分布。基于SRIM程序
分析了10B(n
α)7Li反应产生的四种离子穿过硅材料后的能量离散情况
获得了四种离子的能谱分布拟合函数
为中子深度分析技术提供了能量GAUSS展宽的数学模型。
In neutron depth profiling
the recorded ions have energy spreads as they travel through the sample material
hence the changes in their spectra.Based on the SRIM codes
we simulated the energy-spread distributions of the four product ions
namely 0.839 and 1.013 MeV Li+ ions
and 472 and 1.776 MeV α particles
in the 10B(n
α)7Li reaction.The fitted functions obtained were used to evaluate the energy spread with Gaussian function.
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