Development of ultrahigh-energy electromagnetic cascades in water and lead including the Landau-Pomeranchuk-Migdal effect

Journal Article · Mon Mar 01 00:00:00 EST 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.25.1291· OSTI ID:5422971

Stanev, T; Vankov, C; Streitmatter, R E; Ellsworth, R W; Bowen, T

Cosmic-ray experiments are approaching energies where electromagnetic-cascade calculations must include the Landau-Pomeranchuk-Migdal (LPM) reduction in bremsstrahlung and pair-production cross sections. The LPM effect is already significant for cascades in Pb at 100 TeV and very important at 1000 TeV; for cascades in incident energy E/sub 0/ the LPM effect is significant if E/sub 0/>>E/sub LPM/ = 61.5 L/sub cm/ TeV, where L/sub cm/ is the radiation length in centimeters. Two totally independent Monte Carlo computer programs have been developed which, in approximation A, agree with each other and with Konishi, Misaki, and Fujimaki. One of these programs (by Stanev and Vankov) has been extended to include calculations of the lateral and angular distributions of cascade particles; the other (by Streitmatter, Ellsworth, and Bowen) has been utilized in a hybrid Monte Carlo and analytic method to calculate the longitudinal development in approximation B.

• Research Organization: Institute for Nuclear Research and Nuclear Energy, Sofia 1184, Bulgaria
• OSTI ID: 5422971
• Journal Information: Phys. Rev. D; (United States), Vol. 25:5
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
LEAD
CASCADE SHOWERS
WATER
ANGULAR DISTRIBUTION
BREMSSTRAHLUNG
COSMIC RADIATION
CROSS SECTIONS
ELECTROMAGNETIC RADIATION
MONTE CARLO METHOD
PAIR PRODUCTION
PARTICLE INTERACTIONS
TEV RANGE 100-1000
DISTRIBUTION
ELEMENTS
ENERGY RANGE
HYDROGEN COMPOUNDS
INTERACTIONS
IONIZING RADIATIONS
METALS
OXYGEN COMPOUNDS
RADIATIONS
SHOWERS
TEV RANGE
645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties