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About: Gaisser–Hillas function     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Radiation111499284, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatCosmicRaysyago:CosmicRay111441707yago:Energy111452218yago:IonizingRadiation111437577yago:NaturalPhenomenon111408559yago:Phenomenon100034213yago:PhysicalEntity100001930yago:PhysicalPhenomenon111419404yago:Process100029677yago:Radiation111499284 New Facet based on Instances of this Class

The Gaisser–Hillas function is used in astroparticle physics. It parameterizes the longitudinal particle density in a cosmic ray air shower. The function was proposed in 1977 by and . The number of particles as a function of traversed atmospheric depth is expressed as where is maximum number of particles observed at depth , and and are primary mass and energy dependent parameters. Using substitutions , and the function can be written in an alternative one-parametric (m) form as