Phys. Rev. D 62, 072007 (2000) [12 pages]Measurement of air shower cores to study the cosmic ray composition in the knee energy regionReceived 5 January 2000; published 12 September 2000 Since 1996, a hybrid experiment consisting of an emulsion chamber and a burst detector array and the Tibet-II air-shower array has been operated at Yangbajing (4300 m above sea level) in Tibet. This experiment can detect air shower cores, called burst events, accompanied by air showers in excess of about 100 TeV. Using the burst event data observed by this experiment, we discuss the primary cosmic ray composition around the knee in comparison with the Monte Carlo simulations. In this paper, we show that all the features of burst events are wholly compatible with the heavy enriched composition in the knee energy region. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.62.072007
DOI:
10.1103/PhysRevD.62.072007
PACS:
98.70.Sa, 95.85.Ry, 96.40.De, 96.40.Pq
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.