CHARACTERISTICS OF HIGH ENERGY <EM>γ</EM>-RAYS AT 5500m ALTITUDE

REN JING-RU; LU SUI-LING; SU SHI; WANG YUN-XIN; WANG DIAN-CHEN; WANG CHENG-RUI; HE MAO; ZHANG NAI-JIAN; CAO PEI-YUAN; LI JIN-YU; CHEN YUN-HONG; WANG SHI-ZHI

Chinese Physics C> 1981, Vol. 5> Issue(2) : 205-210

CHARACTERISTICS OF HIGH ENERGY γ-RAYS AT 5500m ALTITUDE

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Abstract：
The characteristics of high energy γ-rays are studued using emulsion chamber installed at Mt. Ganbala, Tibet, 5500 m high above the sea level, at atmospheric depth of 520g/cm². The vertical flux, integral energy spectrum, zenith-angle distribution and the attenuation length in the atmosphere for the high energy γ-rays are obtained. The comparsion of the results with those of the similar works shows satisfactory agreement. Several γ-ray families are selected and analyzed and the energy spectrum, fractional energy spectrum and the mean values of the transverse momentum of γ-rays in the families are obtained and discussed.

References

[1]

Brasil Group and Japan Group, 15th ICRC, Vol. 7(1977), 208.[2] C. M. G. Lattes and M. Akashi et al., Suppl. Prog. Theor. Phys., 47(1971), 1[3] 任敬儒、何箱、陈允鸿等,16th ICRC, Vol. 7(1979),273.[4] 任敬儒.高能物理与核物理,2(1978). 318.[5] M.Akashi et al., 16th ICRC, Vol. 7(1979), 68.[6] S. G. Bayburine et al., 16th ICRC, Vol. 7(1979), 74.[7] M. Akashi et al., Suppl. Prog. Theor. Phys., 32(1964), 1.[8] H. A. Добртин и др. uзв, A. H. CCCP Cep.фuз, 401 (1976). 901.[9] M. Akashi et al., 14th ICRC, (1975), 4306.[10] M.Akaehi et al., CRIrReport, 54-77-13.

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REN JING-RU, LU SUI-LING, SU SHI, WANG YUN-XIN, WANG DIAN-CHEN, WANG CHENG-RUI, HE MAO, ZHANG NAI-JIAN, CAO PEI-YUAN, LI JIN-YU, CHEN YUN-HONG and WANG SHI-ZHI. CHARACTERISTICS OF HIGH ENERGY γ-RAYS AT 5500m ALTITUDE[J]. Chinese Physics C, 1981, 5(2): 205-210.

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Received: 1980-05-20
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

CHARACTERISTICS OF HIGH ENERGY γ-RAYS AT 5500m ALTITUDE

Received Date: 1980-05-20
Accepted Date: 1900-01-01
Available Online: 1981-04-05

Abstract: The characteristics of high energy γ-rays are studued using emulsion chamber installed at Mt. Ganbala, Tibet, 5500 m high above the sea level, at atmospheric depth of 520g/cm². The vertical flux, integral energy spectrum, zenith-angle distribution and the attenuation length in the atmosphere for the high energy γ-rays are obtained. The comparsion of the results with those of the similar works shows satisfactory agreement. Several γ-ray families are selected and analyzed and the energy spectrum, fractional energy spectrum and the mean values of the transverse momentum of γ-rays in the families are obtained and discussed.