Intrinisc Angular and Energy Resolution of Electron-Tracking Detectors

Gronberg, J B ; Johnson, S C ; Lange, D J ; Wright, D M

Lawrence Livermore National Laboratory

关键词: Energy Resolution;    46 Instrumentation Related To Nuclear Science And Technology;    Multiple Scattering;    Physics;    Electrons;   

DOI  :  10.2172/15014435
RP-ID  :  UCRL-TR-205494
RP-ID  :  W-7405-ENG-48
RP-ID  :  15014435

美国|英语

来源: UNT Digital Library

【 摘 要 】

The purpose of this study was to estimate the intrinsic physics limitations on the angular and energy resolution of electron-tracking type gamma-ray detectors. In a Compton interaction, one can completely determine the direction and energy of the incoming gamma ray, without measuring the scattered photon's energy, if one can measure the direction and energy of the scattered electron, and the direction of the scattered photon. Multiple scattering of the Compton electron will quickly destroy the information of the electron's initial direction, so practical devices must be able to resolve the original electron direction, i.e., have tracking resolution mucic h smaller than the typical radiation length in the material.