First Results of Studying EAS Cores Using a High-Mountain Ionization Calorimeter-Reference-Cited by-同舟云学术

First Results of Studying EAS Cores Using a High-Mountain Ionization Calorimeter

Published:2023-12-28 Issue:1 Volume:7 Page:40-51
ISSN:2571-712X
Container-title:Particles
language:en
Short-container-title:Particles

Author:

Sadykov Turlan¹,Mukhamedshin Rauf²^ORCID,Galkin Vladimir³^ORCID,Argynova Alia¹^ORCID,Almenova Aidana¹,Argynova Korlan¹,Makhmet Khanshaiym¹⁴,Novolodskaya Olga¹,Idrissova Tunyk¹^ORCID,Zhukov Valery¹⁵,Piscal Vyacheslav¹⁵,Sadykov Zhakypbek¹⁶^ORCID

Affiliation:

1. Institute of Physics and Technology, Satbayev University, Almaty 050032, Kazakhstan

2. Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia

3. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia

4. Faculty of Physics and Technology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan

5. Tien-Shan High-Mountain Scientific Station of the Lebedev Physical Institute of the Russian Academy of Sciences in the Republic of Kazakhstan, Almaty 050020, Kazakhstan

6. College of New Materials and Nanotechnologies, National University of Science and Technology “MISIS”, Moscow 119071, Russia

Abstract

In high-altitude experiments to study the central cores of EAS at E0 ≳ 1016 eV (√s ≳ 5 TeV) using X-ray emulsion chambers and ionization calorimeters, phenomena such as the coplanarity of the arrival of the most energetic particles in super families of γ-rays and hadrons and a so-called Tien Shan effect (too slow absorption of cascades initiated by high-energy hadrons in the calorimeter) were observed. These effects could not be reproduced within the framework of theoretical models of the 80s and 90s. The coplanarity is explained via a process of coplanar generation of the most energetic secondary particles in interactions of super high-energy hadrons with nuclei of air atoms. Perhaps the Tien Shan effect could be explained using a high cross section for the generation of fragmentation-region charmed hadrons. To study these phenomena, a new set of detectors has been developed, including the world’s highest high-mountain ionization calorimeter, “Hadron-55”. This paper presents the initial experimental results.

Funder

Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan

Publisher

MDPI AG

Subject

Physics and Astronomy (miscellaneous),Astronomy and Astrophysics,Nuclear and High Energy Physics

Link

https://www.mdpi.com/2571-712X/7/1/3/pdf

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