3-11 July 2007
Merida, Mexico
Mexico/General timezone
- icrc2007@icrc2007.unam.mx
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Contribution Poster (WITHDRAWN)
Speakers
- Prof. Toymas YULDASHBAEV
Primary authors
- Prof. Toymas YULDASHBAEV (Sattievich)
Co-authors
- Ms. Ilmira GUMEROVA (Ildarovna)
- Dr. Khusnitdin NURITDINOV (Nuritdinovich)
Abstract content
Primary Cosmic Ray (PCR) Mass Composition analysis performed on the basis of Pamir Collaboration X-Ray Emulsion Chambers (XREC) data. A number of selection criteria of gamma - families initiated by primary protons are considered by Tashkent group. It is shown that the fraction of registered gamma-families, originating from primary PA-interaction, consist of ~ 70-80 % at the energies Eest ~ 10 PeV and essentially decrease up to value 30-40 % above ~ 70 PeV.