Difference between revisions 1377499 and 1396420 on enwikiversity

[[Image:Detectors summary 3.png|thumb|right|200px|This tree diagram shows the relationship between types and classification of most common particle detectors. Credit: [[commons:User:Wdcf|Wdcf]].]]
'''Radiation detectors''' provide a signal that is converted to an electric current. The device is designed so that the current provided is proportional to the characteristics of the incident radiation.

(contracted; show full)imatter Exploration and Light-nuclei Astrophysics (PAMELA) and the Fermi Gamma-ray Space Telescope, conflicts with the predicted decrease of the positron fraction and indicates the existence of a currently unidentified source of positrons, such as pulsars or the annihilation of dark matter particles. Furthermore, researchers observed an unexpected decrease in slope from 20 GeV to 250 GeV. The measured positron to electron ratio is isotropic, the same in all directions."<ref name=Ting/>

=Muons=

[[Image:CMScollaborationPoster.png|thumb|200px|right|The [[w:Compact Muon Solenoid|Compact Muon Solenoid]] (CMS) is an example of a large particle detector. Notice the person for scale. Credit: CERN.]]
"With γ ray energy 50 times higher than the muon energy and a probability of muon production by the γ's of about 1%, muon detectors can match the detection efficiency of a GeV satellite detector if their effective area is larger by 10<sup>4</sup>."<ref name=Halzen>{{ cite journal
|author=Francis Halzen, Todor Stanev, Gaurang B. Yodh
|title=γ ray astronomy with muons
|journal=Physical Review D Particles, Fields, Gravitation, and Cosmology
|month=April 1,
|year=1997
(contracted; show full)[[Category:Original research]]
[[Category:Physics]]
[[Category:Research]]
[[Category:Research projects]]
[[Category:Resources last modified in March 2015]]
{{experimental}}{{article}}{{lecture}}{{astronomy}}{{Materials science}}{{physics}}{{technology}}

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