论文标题
在1 au处测量低能宇宙射线电子和正电子光谱，并用Aesop-Lite光谱仪测量
Measurement of low-energy cosmic-ray electron and positron spectra at 1 AU with the AESOP-Lite spectrometer
论文作者
论文摘要
我们报告了宇宙射线（CR）电子和正电子光谱的新测量，其能量范围为20 MeV -1 GEV。该数据是在2018年5月从瑞典的Esrange飞往加拿大埃斯米尔岛的第一次飞行中的第一次飞行中，该仪器于2018年5月在加拿大的Elsmere岛上飞行。该仪器以3 g.cm $^{-2 g.cm $^{-2 g.cm $^{ - 2}的平均高度累积了130个小时的仪器。该实验使用气体Cherenkov检测器和磁性光谱仪，该磁光谱仪由永久偶极磁铁和硅条检测器（SSD）组成，以识别粒子类型并测量刚性。在质子和大气二级颗粒的背景下检测到电子和正面。在正极磁性极性时期，在20 MeV-1 GEV之间提取了电子和正电子的主要宇宙射线光谱以及重点的反照率。低于100 MEV的正电子级分显式，表明在低刚度下以太阳能调制为主导。提供了全电子光谱，并将其与Heliosperic数值传输代码的模型进行了比较。
We report on a new measurement of the cosmic ray (CR) electron and positron spectra in the energy range of 20 MeV -- 1 GeV. The data were taken during the first flight of the balloon-borne spectrometer AESOP-Lite (Anti Electron Sub Orbital Payload), which was flown from Esrange, Sweden, to Ellesmere Island, Canada, in May 2018. The instrument accumulated over 130 hours of exposure at an average altitude of 3 g.cm$^{-2}$ of residual atmosphere. The experiment uses a gas Cherenkov detector and a magnetic spectrometer, consisting of a permanent dipole magnet and silicon strip detectors (SSDs), to identify particle type and measure the rigidity. Electrons and positrons were detected against a background of protons and atmospheric secondary particles. The primary cosmic ray spectra of electrons and positrons, as well as the re-entrant albedo fluxes, were extracted between 20 MeV -- 1 GeV during a positive solar magnetic polarity epoch. The positron fraction below 100 MeV appears flat, suggesting diffusion dominated solar modulation at low rigidity. The all-electron spectrum is presented and compared with models from a heliospheric numerical transport code.
