AI 中文总结
该研究介绍了用于机载测量雷暴伽马射线辐射的iSTORM伽马射线光谱仪,其搭载于NASA ER-2飞机,采用32个CeBr₃闪烁体阵列,可观测雷暴伽马射线瞬变现象,还记录到新发现的闪烁伽马射线闪。
AI 中文摘要
原位雷暴辐射机制观测仪(iSTORM)是一款伽马射线光谱仪,用于研究源自雷暴的伽马射线瞬变现象,如辉光和陆地伽马射线闪(TGFs)。该仪器由美国海军研究实验室设计建造,用于搭载在NASA ER-2飞机上部署。它采用由硅光电倍增管(SiPMs)读出的32个1英寸直径CeBr₃闪烁体阵列,在飞行条件下实现约250 keV至5 MeV的能量范围,总几何面积为157 cm²。作为ALOFT campaign中的两台伽马射线仪器之一,iSTORM记录到了辉光、陆地伽马射线闪(TGFs)以及新发现的闪烁伽马射线闪(FGFs)。
英文摘要
The in-Situ Thunderstorm Observer for Radiation Mechanisms (iSTORM) is a gamma-ray spectrometer to study gamma-ray transients originating from thunderstorms, such as glows and terrestrial gamma-ray flashes (TGFs). It is designed and built by the U.S. Naval Research Laboratory for deployment aboard a NASA ER-2 aircraft. Using an array of 32 one-inch-diameter $\mathrm{CeBr}_3$ scintillators read out with silicon photomultipliers (SiPMs), the instrument achieves an energy range of $\sim 250 \ \mathrm{keV}$ to $5 \ \mathrm{MeV}$ under flight conditions, with a total geometrical area of $157 \ \mathrm{cm^2}$. One of two gamma-ray instruments in the ALOFT campaign, iSTORM recorded glows, terrestrial gamma-ray flashes (TGFs), and the newly discovered flickering gamma-ray flashes (FGFs).