论文标题
用于识别具有AMS-02的单电荷同位素的参数方法
A parametric approach for the identification of single-charged isotopes with AMS-02
论文作者
论文摘要
单充电宇宙射线的同位素组成的测量提供了在传播过程中的重要见解。然而，由于与杜特龙（Deuterons）相比，质子的丰度高100倍，这是氢的唯一稳定同位素，因此同位素识别具有挑战性。自2011年5月以来，利用Alpha磁光谱仪（AMS-02）在国际空间站上运行的粒子物理探测器操作的速度和动量的精确测量，我们描述了一种参数模板拟合方法，该方法考虑了系统的不确定性，例如AMS-02内部粒子的粒子差异和最终的数据差异和通过数据差异和n.aus and and and and and and and and and and and and and and and and and and and and and and and and and and nus nus nu. nuus。通过这种方法，我们还能够根据质量分辨率评估AMS-02性能，表明它能够将氢的同位素分离为10 GEV/N。
Measurements of the isotopic composition of single-charged cosmic rays provide important insights in the propagation processes. However, the isotopic identification is challenging due to the one hundred times greater abundance of protons when compared to deuterons, the only stable isotope of hydrogen. Taking advantage of the precise measurements of the velocity and momentum in the Alpha Magnetic Spectrometer (AMS-02), a particle physics detector operating aboard the International Space Station since May 2011, we describe a parametric template fit method, which takes into account systematic uncertainties such as the fragmentation of particles inside AMS-02 and eventual differences between data and simulation through the use of nuisance parameters. With this method we are also able to assess the AMS-02 performance in terms of mass resolution, showing that it is able to separate the isotopes of hydrogen up to 10 GeV/n.
