Phenomenon of Energy Concentration in Super-High Energy γ-Hadron Families

DAI ZhiQiang; XUE Liang; LI JinYu; ZHANG XueYao; FENG CunFeng; FU Yu; LI Jie; CAO PeiYuan; ZHANG NaiJian; HE Mao; WANG ChengRui; REN JingRu; LU SuiLing

Chinese Physics C> 2000, Vol. 24> Issue(10) : 885-891

Phenomenon of Energy Concentration in Super-High Energy γ-Hadron Families

Department of Electronic Engineering, Shandong University,Jinan 250100,China2 Department of Physics, Shandong University,Ji'nan 250100,China3 Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
The family events observed with iron emulsion chambers at Mt. Kanbala are analyzed and compared with the simulations by the COSMOS code and CORSIKA code respectively. A detailed study on the production of super-high energy γ-hadron families with energy concentration behavior is carried out. The preliminary conclusions are: 1) the energy concentration behavior of super-high energy γ-hadron families is the external embodiment of high energy central shower clusters contained in the families. 2) the mean lateral spread of these clusters is about 0.37cm. 3) the frequency of this phenomenon appeared under the conditions of R≤10mm and χ₁₀≥90% is (20.5±3.1)%. 4) compared to the COSMOS code based on the phenomenological multicluster model,the simulation by the CORSIKA code that adopts SIBYLL model is closer to the analytical results of experiment.

References

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DAI ZhiQiang, XUE Liang, LI JinYu, ZHANG XueYao, FENG CunFeng, FU Yu, LI Jie, CAO PeiYuan, ZHANG NaiJian, HE Mao, WANG ChengRui, REN JingRu and LU SuiLing. Phenomenon of Energy Concentration in Super-High Energy γ-Hadron Families[J]. Chinese Physics C, 2000, 24(10): 885-891.

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Received: 1999-10-15
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

Phenomenon of Energy Concentration in Super-High Energy γ-Hadron Families

Corresponding author: DAI ZhiQiang,

Department of Electronic Engineering, Shandong University,Jinan 250100,China2 Department of Physics, Shandong University,Ji'nan 250100,China3 Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date: 1999-10-15

Accepted Date: 1900-01-01

Available Online: 2000-10-05

Abstract: The family events observed with iron emulsion chambers at Mt. Kanbala are analyzed and compared with the simulations by the COSMOS code and CORSIKA code respectively. A detailed study on the production of super-high energy γ-hadron families with energy concentration behavior is carried out. The preliminary conclusions are: 1) the energy concentration behavior of super-high energy γ-hadron families is the external embodiment of high energy central shower clusters contained in the families. 2) the mean lateral spread of these clusters is about 0.37cm. 3) the frequency of this phenomenon appeared under the conditions of R≤10mm and χ₁₀≥90% is (20.5±3.1)%. 4) compared to the COSMOS code based on the phenomenological multicluster model,the simulation by the CORSIKA code that adopts SIBYLL model is closer to the analytical results of experiment.

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Phenomenon of Energy Concentration in Super-High Energy γ-Hadron Families

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