کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1771269 | 1020747 | 2011 | 7 صفحه PDF | دانلود رایگان |
We have investigated the fluorescence emission in the near infrared from the air and its main components, nitrogen and oxygen. The gas was excited by a 95 kV electron beam and the fluorescence light detected by an InGaAs photodiode, sensitive down to about 1700 nm. We have recorded the emission spectra by means of a Fourier Transform Infrared spectrometer. The light yield was also measured by comparing the near infrared signal with the known ultraviolet fluorescence, detected by a Si photodiode.The possibility of using the near infrared fluorescence of the atmosphere to detect ultra-high-energy cosmic rays is discussed, showing the pros and the cons of this novel method.
Research highlights
► Pure nitrogen near-infrared fluorescence spectrum.
► Pure oxygen near-infrared fluorescence spectrum.
► Dry air near-infrared fluorescence spectrum.
► Dry air near-infrared fluorescence light yield.
Journal: Astroparticle Physics - Volume 34, Issue 6, January 2011, Pages 333–339