Nuclear interactions of super high energy cosmic-rays observed in mountain emulsion chambers

Bayburina, S. G.; Borisov, A. S.; Cherdyntseva, K. V.; Guseva, Z. M.; Denisova, V. G.; Dunaevskii, A. M.; Kanevskaya, E. A.; Maximenko, V.M.; Пашков, С. В.; Puchkov, V. S.; Shaulov, S. B.; Slavatinsky, S. A.; Smirnova, M. D.; Smorodin, Yu.A.; Urysson, A. V.; Zelevinskaya, N.G.; Zhdanov, G. B.; Afanasjeva, L. G.; Baradzei, L.T.; Gorochova, E. I.; Ivanenko, I. P.; Iljina, N.; Khristiansen, G. B.; Lazareva, T.; Managadze, A. K.; Murzina, E.A.; Rakobolskaya, I.V.; Роганова, Т. М.; Ryabova, N.G.; Зацепин, Г. Т.; Mukhamedshin, R. A.; Cananov, S. D.; Khisanishvili, L. A.; Roinishvili, N.; Svanidge, M. S.; Tecliashvili, J. A.; Varsimashvili, T.V.; Azimov, Z.; Bodojanov, I. B.; Gubar, N.; Gulov, Y.; Normuradov, F.; Shobaronov, Kh.; Dobrotin, N.A.; Emeljanov, Yu. A.; Lukin, Yu.T.; Shorin, B. F.; Zaitseva, E.; Azimov, S.A.; Dzhuraev, A. R.; Mulladjanov, E. G.; Nutritdinov, Kh; Talipov, D. A.; Shamansurov, I.; Juldashbaev, T. S.; Buja, Z.; Gładysz, E.; Mazurkiewicz, Jan; Mikocki, S.; Szarska, M.; Zawiejski, L.; Bielawska, H.; Juskiewicz, R.; Kacperski, J. L.; Krys, A.; Malinowski, J.; Milczarek, K.; Sroka, Jacek; Tomaszewski, A.; Wrotniak, J. A.; Maluszynska, K.; Włodarczyk, Z.; Akashi, Makoto; Amenomori, M.; Konishi, Eiichi; Nanjo, H.; Watanabe, Z.; Mizutani, K.; Kasahara, K.; Torii, Shoji; Yuda, T.; Shirai, T.; Tateyama, N.; Taira, T.; Mito, I.; Shibata, M.; Sugimoto, H.; Taira, K.; Hotta, N.; Ballester, M.; Santos, Cláudio H. Dos; Filho, J. Bellandi; Chinellato, J. A.; Dobrigkeit, C.; Lattes, C. M. G.; Marques, A.; Menon, M. J.; Sawayanagi, K.; Silva, E.; Shibuya, E. H.; Turtelli, A.; Amato, N. M.; Castro, F. M. Oliveira; Maldonado, R. H. C.; Aoki, Hiroshi; Fuyimoto, Y.; Hasegawa, S.; Kumano, H.; Semba, H.; Tabuki, T.; Tamada, M.; Tanaka, Kojiro; Yamashita, S.; Arata, N.; Shibata, T.; Yokoi, K.; Ohsawa, A.

doi:10.1016/0550-3213(81)90283-2

Cited by 28 publications

(1 citation statement)

References 2 publications

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“…Shower events with multiple core structure, or multicore events, have been observed and investigated by many experiments with different techniques, namely emulsion chambers [19] and hadronic calorimeter [20]. Those events are typically explained within the framework of jet production, which is essentially provided by the leading particle interaction with the Air target nuclei, the separation between the cores being related to the p T of the leading particle.…”

Section: Introductionmentioning

confidence: 99%

The analog Resistive Plate Chamber detector of the ARGO-YBJ experiment

Bartoli

Bernardini

et al. 2015

Astroparticle Physics

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The ARGO-YBJ experiment has been in stable data taking from November 2007 till February 2013 at the YangBaJing Cosmic Ray Observatory (4300 m a.s.l.). The detector consists of a single layer of Resistive Plate Chambers (RPCs) (6700 m 2 ) operated in streamer mode. The signal pick-up is obtained by means of strips facing one side of the gas volume. The digital readout of 1 arXiv:1504.01510v1 [astro-ph.IM] 7 Apr 2015 the signals, while allows a high space-time resolution in the shower front reconstruction, limits the measurable energy to a few hundred TeV. In order to fully investigate the 1-10 PeV region, an analog readout has been implemented by instrumenting each RPC with two large size electrodes facing the other side of the gas volume. Since December 2009 the RPC charge readout has been in operation on the entire central carpet (∼ 5800 m 2 ). In this configuration the detector is able to measure the particle density at the core position where it ranges from tens to many thousands of particles per m 2 . Thus ARGO-YBJ provides a highly detailed image of the charge component at the core of air showers. In this paper we describe the analog readout of RPCs in ARGO-YBJ and discuss both the performance of the system and the physical impact on the EAS measurements.

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Section: Introductionmentioning

confidence: 99%

The analog Resistive Plate Chamber detector of the ARGO-YBJ experiment

Bartoli

Bernardini

et al. 2015

Astroparticle Physics

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The Extended Showers

Bertolotti

2012

Celestial Messengers

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Abnormal photonic energy ? a signal of Quark matter possibly seen in exotic cosmic ray events

Panagiotou

Karabarbounis

Petridis

1989

Z. Physik A - Atomic Nuclei

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A phenomenological method is proposed to select possible Quark matter forming events in ultra-relativistic nucleus-nucleus interactions. We compare the released photonic and hadronic energies from a Quark matter forming event and from a normal Hadronic event and derive a relation, which may be used in an event-by-event analysis to differentiate the two phases. We determine thus two regions of QCD deconfinement. We also discuss the hadronic, photonic energy and multiplicity contents and the (PT) of several exotic cosmic ray events at ultra high energies. On the basis of the phenomenological model, we suggest that the "Centauro" type are Quark matter events near the projectile fragmentation region with very large baryochemical potential, ~b. The "Anti-Centauro" type events are created by vacuum excitation in the central region with near zero #b-PACS: 25.70.Np; 12.38.Mh; 96.40.Mn

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Nuclear interactions of super high energy cosmic-rays observed in mountain emulsion chambers

Cited by 28 publications

References 2 publications

The analog Resistive Plate Chamber detector of the ARGO-YBJ experiment

The analog Resistive Plate Chamber detector of the ARGO-YBJ experiment

The Extended Showers

Abnormal photonic energy ? a signal of Quark matter possibly seen in exotic cosmic ray events

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