Primary cosmic-ray composition in the energy range of 1014 eV to 1016 eV and high-energy atmospheric cosmic rays observed with emulsion chambers at Mt. Kanbala

J. R. Ren; H. H. Kuang; A. X. Huo; S. L. Lu; S. Su; Y. X. Wang; C. R. Wang; M. He; N. J. Zhang; P. Y. Cao; J. Y. Li; S. Z. Wang; G. Z. Bai; Z. H. Liu; G. J. Li; G. X. Gang; W. D. Zhou; R. D. He; M. Amenomori; H. Nanjo; N. Hotta; I. Ohta; K. Mizutani; K. Kasahara; T. Yuda; M. Shibata; T. Shirai; N. Tateyama; Shoji Torii; H. Sugimoto; K. Taira

doi:10.1007/BF02508696

Primary cosmic-ray composition in the energy range of 10¹⁴ eV to 10¹⁶ eV and high-energy atmospheric cosmic rays observed with emulsion chambers at Mt. Kanbala

J. R. Ren^*, H. H. Kuang, A. X. Huo, S. L. Lu, S. Su, Y. X. Wang, C. R. Wang, M. He, N. J. Zhang, P. Y. Cao, J. Y. Li, S. Z. Wang, G. Z. Bai, Z. H. Liu, G. J. Li, G. X. Gang, W. D. Zhou, R. D. He, M. Amenomori, H. NanjoN. Hotta, I. Ohta, K. Mizutani, K. Kasahara, T. Yuda, M. Shibata, T. Shirai, N. Tateyama, Shoji Torii, H. Sugimoto, K. Taira

^*この研究の対応する著者

研究成果: Article › 査読

11 被引用数 (Scopus)

抄録

We report on the results of the measurements of energy spectra of atmospheric cosmic rays in the energy around 10 TeV measured with emulsion chambers at Mt. Kanbala (5500 m above sea-level, atmospheric depth 520 g/cm²). The power indices of the integral spectra take the values of 2.00±0.08 for gamma-rays and 1.90±0.10 for hadrons, in the energy range from 5 TeV to 20 TeV. Their intensities are compatible with those expected from the primary cosmic rays containing fewer protons than in the lower energy region. The energy spectrum of family events is also discussed with reference to the composition of primary cosmic rays. It is concluded that the portion of protons in the primary cosmic rays gradually decreases in the energy range from 10¹³ eV to 10¹⁵ eV.

本文言語	English
ページ（範囲）	43-60
ページ数	18
ジャーナル	Il Nuovo Cimento C
巻	10
号	1
DOI	https://doi.org/10.1007/BF02508696
出版ステータス	Published - 1987 1月
外部発表	はい

ASJC Scopus subject areas

海洋工学
機械工学
電子工学および電気工学
制御およびシステム工学
工学（その他）
原子力エネルギーおよび原子力工学
コンピュータサイエンスの応用
化学工学（全般）

文献へのアクセス

10.1007/BF02508696

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引用スタイル

Ren, J. R., Kuang, H. H., Huo, A. X., Lu, S. L., Su, S., Wang, Y. X., Wang, C. R., He, M., Zhang, N. J., Cao, P. Y., Li, J. Y., Wang, S. Z., Bai, G. Z., Liu, Z. H., Li, G. J., Gang, G. X., Zhou, W. D., He, R. D., Amenomori, M., ... Taira, K. (1987). Primary cosmic-ray composition in the energy range of 10¹⁴ eV to 10¹⁶ eV and high-energy atmospheric cosmic rays observed with emulsion chambers at Mt. Kanbala. Il Nuovo Cimento C, 10(1), 43-60. https://doi.org/10.1007/BF02508696

Ren, JR, Kuang, HH, Huo, AX, Lu, SL, Su, S, Wang, YX, Wang, CR, He, M, Zhang, NJ, Cao, PY, Li, JY, Wang, SZ, Bai, GZ, Liu, ZH, Li, GJ, Gang, GX, Zhou, WD, He, RD, Amenomori, M, Nanjo, H, Hotta, N, Ohta, I, Mizutani, K, Kasahara, K, Yuda, T, Shibata, M, Shirai, T, Tateyama, N, Torii, S, Sugimoto, H & Taira, K 1987, 'Primary cosmic-ray composition in the energy range of 10¹⁴ eV to 10¹⁶ eV and high-energy atmospheric cosmic rays observed with emulsion chambers at Mt. Kanbala', Il Nuovo Cimento C, vol. 10, no. 1, pp. 43-60. https://doi.org/10.1007/BF02508696

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title = "Primary cosmic-ray composition in the energy range of 1014 eV to 1016 eV and high-energy atmospheric cosmic rays observed with emulsion chambers at Mt. Kanbala",

abstract = "We report on the results of the measurements of energy spectra of atmospheric cosmic rays in the energy around 10 TeV measured with emulsion chambers at Mt. Kanbala (5500 m above sea-level, atmospheric depth 520 g/cm2). The power indices of the integral spectra take the values of 2.00±0.08 for gamma-rays and 1.90±0.10 for hadrons, in the energy range from 5 TeV to 20 TeV. Their intensities are compatible with those expected from the primary cosmic rays containing fewer protons than in the lower energy region. The energy spectrum of family events is also discussed with reference to the composition of primary cosmic rays. It is concluded that the portion of protons in the primary cosmic rays gradually decreases in the energy range from 1013 eV to 1015 eV.",

keywords = "Cosmic rays",

author = "Ren, {J. R.} and Kuang, {H. H.} and Huo, {A. X.} and Lu, {S. L.} and S. Su and Wang, {Y. X.} and Wang, {C. R.} and M. He and Zhang, {N. J.} and Cao, {P. Y.} and Li, {J. Y.} and Wang, {S. Z.} and Bai, {G. Z.} and Liu, {Z. H.} and Li, {G. J.} and Gang, {G. X.} and Zhou, {W. D.} and He, {R. D.} and M. Amenomori and H. Nanjo and N. Hotta and I. Ohta and K. Mizutani and K. Kasahara and T. Yuda and M. Shibata and T. Shirai and N. Tateyama and Shoji Torii and H. Sugimoto and K. Taira",

year = "1987",

month = jan,

doi = "10.1007/BF02508696",

language = "English",

volume = "10",

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AU - Ren, J. R.

AU - Kuang, H. H.

AU - Huo, A. X.

AU - Lu, S. L.

AU - Su, S.

AU - Wang, Y. X.

AU - Wang, C. R.

AU - He, M.

AU - Zhang, N. J.

AU - Cao, P. Y.

AU - Li, J. Y.

AU - Wang, S. Z.

AU - Bai, G. Z.

AU - Liu, Z. H.

AU - Li, G. J.

AU - Gang, G. X.

AU - Zhou, W. D.

AU - He, R. D.

AU - Amenomori, M.

AU - Nanjo, H.

AU - Hotta, N.

AU - Ohta, I.

AU - Mizutani, K.

AU - Kasahara, K.

AU - Yuda, T.

AU - Shibata, M.

AU - Shirai, T.

AU - Tateyama, N.

AU - Torii, Shoji

AU - Sugimoto, H.

AU - Taira, K.

PY - 1987/1

Y1 - 1987/1

N2 - We report on the results of the measurements of energy spectra of atmospheric cosmic rays in the energy around 10 TeV measured with emulsion chambers at Mt. Kanbala (5500 m above sea-level, atmospheric depth 520 g/cm2). The power indices of the integral spectra take the values of 2.00±0.08 for gamma-rays and 1.90±0.10 for hadrons, in the energy range from 5 TeV to 20 TeV. Their intensities are compatible with those expected from the primary cosmic rays containing fewer protons than in the lower energy region. The energy spectrum of family events is also discussed with reference to the composition of primary cosmic rays. It is concluded that the portion of protons in the primary cosmic rays gradually decreases in the energy range from 1013 eV to 1015 eV.

AB - We report on the results of the measurements of energy spectra of atmospheric cosmic rays in the energy around 10 TeV measured with emulsion chambers at Mt. Kanbala (5500 m above sea-level, atmospheric depth 520 g/cm2). The power indices of the integral spectra take the values of 2.00±0.08 for gamma-rays and 1.90±0.10 for hadrons, in the energy range from 5 TeV to 20 TeV. Their intensities are compatible with those expected from the primary cosmic rays containing fewer protons than in the lower energy region. The energy spectrum of family events is also discussed with reference to the composition of primary cosmic rays. It is concluded that the portion of protons in the primary cosmic rays gradually decreases in the energy range from 1013 eV to 1015 eV.

KW - Cosmic rays

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