Techniques of the FLASH thin target experiment

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2008）

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摘要

The fluorescence yield in air is reported for wavelength and pressure ranges of interest to ultra-high energy cosmic ray detectors. A 28.5GeV electron beam was used to excite the fluorescence. Central to the approach was the system calibration, using Rayleigh scattering of a nitrogen laser beam. In atmospheric pressure dry air, at 304K, the yield is 20.8±1.6 photons per MeV.

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关键词

Air fluorescence,Fluorescence spectrum,Ultra-high energy cosmic rays

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