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首页> 外文期刊>Nuclear instruments and methods in physics research >Compton imaging of MeV gamma-rays with the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT)
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Compton imaging of MeV gamma-rays with the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT)

机译:液态氙伽玛射线成像望远镜(LXeGRIT)对MeV伽玛射线的康普顿成像

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摘要

The Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT) is the first realization of a liquid xenon time projection chamber for Compton imaging of MeV γ-ray sources in astrophysics. By measuring the energy deposit and the three spatial coordinates of individual γ-ray scattering points, the location of the source in the sky is inferred with Compton kinematics reconstruction. The angular resolution is determined by the detector's energy and spatial resolutions, as well as by the separation in space between the first and second scattering. The imaging response of LXeGRIT was established with y-rays from radioactive sources, during calibration and integration at the Columbia Astrophysics Laboratory, prior to the 2000 balloon flight mission. In this paper we describe in detail the various steps involved in imaging sources with LXeGRIT and present experimental results on angular resolution and other parameters which characterize its performance as a Compton telescope.
机译:液态氙气伽玛射线成像望远镜(LXeGRIT)是用于在天体物理学中对MeVγ射线源进行康普顿成像的液态氙气时间投射室的第一个实现。通过测量能量沉积和单个γ射线散射点的三个空间坐标,可以通过康普顿运动学重构来推断源在天空中的位置。角分辨率取决于探测器的能量和空间分辨率,以及第一和第二散射之间的空间间隔。 LXeGRIT的成像响应是在2000年气球飞行任务之前,在哥伦比亚天体物理学实验室的校准和整合过程中,通过放射源的y射线建立的。在本文中,我们详细描述了使用LXeGRIT成像源所涉及的各个步骤,并给出了角分辨率和其他参数的实验结果,这些结果表征了其作为康普顿望远镜的性能。

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