Halo Events in Superhigh Energy Nuclear Interactions

Ren Jingru; Lu Suiling; Wang Chengrui; He Mao; Zhang Naijian; Cao Peiyuan; Li Jinyu

Chinese Physics C> 1996, Vol. 20> Issue(5) : 400-404

Halo Events in Superhigh Energy Nuclear Interactions

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 1000392 Departmeat Of Physics,Shandong University,Jinan 250100

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Abstract：
Gamma family events with visible energies higher than 10¹⁵eV usually form halos in the emulsion chambers,which bring up some problems for further investigating the characteristics of superhigh energy nuclear interactions. At present,only a few gross quantities are used for describing the halo events.On the other hand,there are some fine structures inside the halo, which can give us more information.We have measured all the showers one by one in the superhigh energy family events and compared the results with those obtained by the method of halo measurements.Analyses and discussions are made forsome special events.

References

[1]	J.R.Ren et al.,Phys.Rev.,D38（1988）1404;C.M.G.Lattes et al.,Phys.Rep.,65（1980）151.[2]M.Shibata,18th ICRC Banghore 11（1983）106.[3]China-Japan Emulsion Chamber Collaboration,19th ICRC 6（1985）313,317.

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Ren Jingru, Lu Suiling, Wang Chengrui, He Mao, Zhang Naijian, Cao Peiyuan and Li Jinyu. Halo Events in Superhigh Energy Nuclear Interactions[J]. Chinese Physics C, 1996, 20(5): 400-404.

Ren Jingru, Lu Suiling, Wang Chengrui, He Mao, Zhang Naijian, Cao Peiyuan and Li Jinyu. Halo Events in Superhigh Energy Nuclear Interactions[J]. Chinese Physics C, 1996, 20(5): 400-404. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Halo Events in Superhigh Energy Nuclear Interactions

Corresponding author: Ren Jingru,

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 1000392 Departmeat Of Physics,Shandong University,Jinan 250100

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1996-05-05

Abstract: Gamma family events with visible energies higher than 10¹⁵eV usually form halos in the emulsion chambers,which bring up some problems for further investigating the characteristics of superhigh energy nuclear interactions. At present,only a few gross quantities are used for describing the halo events.On the other hand,there are some fine structures inside the halo, which can give us more information.We have measured all the showers one by one in the superhigh energy family events and compared the results with those obtained by the method of halo measurements.Analyses and discussions are made forsome special events.