LPM effect and primary energy estimations

Details LPM effect and primary energy estimations LPM effect and primary energy estimations

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....6..400b&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 6 p 400-403 (SEE N85-35848 24-93)

Computer Science

Bremsstrahlung, Cosmic Ray Showers, Coulomb Collisions, Electron Avalanche, Hadrons, Lead (Metal), Pair Production, Primary Cosmic Rays, Calorimeters, Gamma Ray Bursts, Monte Carlo Method

Scientific paper

The distortion of the electron cascade development under LPM effects is now admitted; it consists of an increase of depth of showers origin, of shower maximum T sum max, a decrease of the number of particles at maximum Nmax and results in a flattening and a widening of the cascade transition curve. Connected with the influence of multiple Coulomb scattering on basic electromagnetic processes (bremsstrahlung, pair production), this effect appears at high energy with a threshold dependent on the density of the medium (more than 10 TeV for lead, more than 106 TeV in air). Consequently, the electromagnetic components of hadron induced showers in lead and EAS in air calculated for the same hadronic cascades in the different alternative, including or not the LPM effect are examined here.

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