气溶胶中F和Na分析的外束质子诱发γ射线激发曲线测量

Proton Induced γ-ray Emission Yields for External Beam Analysis of F and Na in Aerosol Samples

摘要: 在大气颗粒物离子束分析中，质子诱发γ射线分析（PIGE）作为质子诱发X荧光发射（PIXE）的补充方法，通常用于分析轻元素。为得到外束PIGE定量分析气溶胶样品中F和Na元素的最佳实验条件，本工作在北京师范大学串列加速器上测定了质子能量在1.8～2.9 MeV范围内，核反应¹⁹F(p,p’γ)¹⁹F（E_γ=110 keV和197 keV）和 ²³Na(p,p’γ)²³Na(E_γ=440 keV)的γ射线激发函数。

Abstract: Proton induced γ-ray emission (PIGE) is commonly used as a complementary technique of proton induced X-ray emission (PIXE) for the analysis of light elements in aerosol samples. In order to get the best operating conditions of PIGE for F and Na determination in aerosol samples relative to thin reference standards in an external beam setup, the γ-ray yields of the reaction ¹⁹F(p,p’γ)^19F（E_γ=110 keV and 197 keV） and ²³Na(p,p’γ)²³Na (E_γ=440 keV) were measured for incident protons in the energy range of 1.8-2.9 MeV at the external beam facility of the 1.7 MV tandem accelerator in Beijing Normal University.

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