HIGH ENERGY HADRONS IN ATMOSPHERIC COSMIC RAYS OBSERVED WITH Fe EMULSION CHAMBERS

ZHANG Nai-Jian; WANG Cheng-Rui; HE Mao; CAO Pei-Yuan; LI Jin-Yu; ZOU Bao-Tang; WANG Guang-Jun; WEI Chao

Chinese Physics C> 1989, Vol. 13> Issue(11) : 961-966

HIGH ENERGY HADRONS IN ATMOSPHERIC COSMIC RAYS OBSERVED WITH Fe EMULSION CHAMBERS

Deparement of High Energy Physics,Shandong University,Jinan

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Abstract：
A part of K4(1984—1985) Fe emulsion chambers exposed at Mt.Kanbala (5500m,atmospheric depth 520g/cm²)by China-Japan Emulsion Chamber Collaboration has been analyzed with systematic scanning and measurement.The distribution of the starting of the starting point depths of the observed showers is given.The zenith angle distribution,vertical intensity,energy spectrum and attenuation length of hadrons in air and in iron are presented.Our results are compared with the recent data given by other experiments,and they are consistent with each other approximately.

References

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任敬儒等，《高能物理与核物理》，5(1981),205.[2] 霍安祥等，《高能物理与核物理》，6(1982),779.[3] 陆穗等等，《高能物理与核物理》，7(1983),118.[4] 张春生等，《高能物理与核物理》，9(1985),649.[5] J. R. Ren et al., 19th ICRC, 6 (1985), 204.[6] J. R. Ren et al., 20th ICRC, 5(1987), 255, 371.[7] J. R. Ren et al., Nuovo Cimenao, 10C(1997), 43.[8] 曹培园等，山东大学学报(自然科学版)，23(1988),31.[9] N. J. Zhang et al，Proc. of Int. Symposium on CR Superhigh Energy Interactions, Beijing, (1986), 2-13.[10] M. Akashi et al., 17th ICRC, 5(1981), 247.[11] M. Amenomori et al., 19th ICRC, 6(1985), 208.[12] S. G. Bayburina et al., 18th ICRC, 5 (1983), 420[13] S. D. Cananov et al., 19th ICRC, 6(1985), 216.[14] M. Shibata et al., Nuovo Cimenao, 39B (1977), 302.[15] "Particle Properties Data Booklet", Printed at CERN, (1986), P. 162.[16] E. H. Shibuya, "Rapporteur Talks of 20th 1CRC, HE Session", 20th ICRC, 8(1987), 238.[17] 张乃健等，山东大学学报(自然科学版)，22(1987),69.

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ZHANG Nai-Jian, WANG Cheng-Rui, HE Mao, CAO Pei-Yuan, LI Jin-Yu, ZOU Bao-Tang, WANG Guang-Jun and WEI Chao. HIGH ENERGY HADRONS IN ATMOSPHERIC COSMIC RAYS OBSERVED WITH Fe EMULSION CHAMBERS[J]. Chinese Physics C, 1989, 13(11): 961-966.

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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

HIGH ENERGY HADRONS IN ATMOSPHERIC COSMIC RAYS OBSERVED WITH Fe EMULSION CHAMBERS

Corresponding author: ZHANG Nai-Jian,

Deparement of High Energy Physics,Shandong University,Jinan

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1989-11-15

Abstract: A part of K4(1984—1985) Fe emulsion chambers exposed at Mt.Kanbala (5500m,atmospheric depth 520g/cm²)by China-Japan Emulsion Chamber Collaboration has been analyzed with systematic scanning and measurement.The distribution of the starting of the starting point depths of the observed showers is given.The zenith angle distribution,vertical intensity,energy spectrum and attenuation length of hadrons in air and in iron are presented.Our results are compared with the recent data given by other experiments,and they are consistent with each other approximately.