Primary-cosmic-ray protons above 1015 eV derived from the observation of superhigh-energy halo events

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

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The primary-cosmic-ray proton flux >1015 eV is derived through analyses on superhigh-energy halo events observed by the Mt. Fuji and Mt. Kanbala emulsion-chamber experiments. Interpretations are made for the origin of halo events based on Monte Carlo simulation, which clarifies the sensitivity of the halo events to the primary-composition and nuclear-interaction models. It is shown that the intensity of the halo events is most sensitive to the primary proton flux and the feature of the fragmentation region of the multiple production. The proton flux >1015 eV is estimated as nearly 3 times less than the extrapolated low-energy measurement by Ryan et al. suggesting the heavy-nuclei dominance above the knee energy of the total spectrum.

Original languageEnglish
Pages (from-to)1426-1432
Number of pages7
JournalPhysical Review D
Volume38
Issue number5
DOIs
Publication statusPublished - 1988
Externally publishedYes

Fingerprint

primary cosmic rays
halos
protons
nuclear interactions
energy
heavy nuclei
emulsions
fragmentation
chambers
sensitivity
simulation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Ren, J. R., Huo, A. X., Lu, S. L., Su, S., Wang, C. R., Zhang, N. J., ... Taira, K. (1988). Primary-cosmic-ray protons above 1015 eV derived from the observation of superhigh-energy halo events. Physical Review D, 38(5), 1426-1432. https://doi.org/10.1103/PhysRevD.38.1426

Primary-cosmic-ray protons above 1015 eV derived from the observation of superhigh-energy halo events. / Ren, J. R.; Huo, A. X.; Lu, S. L.; Su, S.; Wang, C. R.; Zhang, N. J.; Cao, P. Y.; Zou, B. T.; Li, J. Y.; Wang, S. Z.; Bai, G. Z.; Liu, Z. H.; Li, G. J.; Geng, Q. X.; Zhou, W. D.; He, R. D.; Amenomori, M.; Nanjo, H.; Hotta, N.; Ohta, I.; Mizutani, K.; Kasahara, K.; Yuda, T.; Shibata, M.; Shirai, T.; Tateyama, N.; Torii, Shoji; Sugimoto, H.; Taira, K.

In: Physical Review D, Vol. 38, No. 5, 1988, p. 1426-1432.

Research output: Contribution to journalArticle

Ren, JR, Huo, AX, Lu, SL, Su, S, Wang, CR, Zhang, NJ, Cao, PY, Zou, BT, Li, JY, Wang, SZ, Bai, GZ, Liu, ZH, Li, GJ, Geng, QX, 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 1988, 'Primary-cosmic-ray protons above 1015 eV derived from the observation of superhigh-energy halo events', Physical Review D, vol. 38, no. 5, pp. 1426-1432. https://doi.org/10.1103/PhysRevD.38.1426
Ren, J. R. ; Huo, A. X. ; Lu, S. L. ; Su, S. ; Wang, C. R. ; Zhang, N. J. ; Cao, P. Y. ; Zou, B. T. ; Li, J. Y. ; Wang, S. Z. ; Bai, G. Z. ; Liu, Z. H. ; Li, G. J. ; Geng, Q. X. ; Zhou, W. D. ; He, R. D. ; Amenomori, M. ; Nanjo, H. ; Hotta, N. ; Ohta, I. ; Mizutani, K. ; Kasahara, K. ; Yuda, T. ; Shibata, M. ; Shirai, T. ; Tateyama, N. ; Torii, Shoji ; Sugimoto, H. ; Taira, K. / Primary-cosmic-ray protons above 1015 eV derived from the observation of superhigh-energy halo events. In: Physical Review D. 1988 ; Vol. 38, No. 5. pp. 1426-1432.
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AU - Ren, J. R.

AU - Huo, A. X.

AU - Lu, S. L.

AU - Su, S.

AU - Wang, C. R.

AU - Zhang, N. J.

AU - Cao, P. Y.

AU - Zou, B. T.

AU - Li, J. Y.

AU - Wang, S. Z.

AU - Bai, G. Z.

AU - Liu, Z. H.

AU - Li, G. J.

AU - Geng, Q. 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 - 1988

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AB - The primary-cosmic-ray proton flux >1015 eV is derived through analyses on superhigh-energy halo events observed by the Mt. Fuji and Mt. Kanbala emulsion-chamber experiments. Interpretations are made for the origin of halo events based on Monte Carlo simulation, which clarifies the sensitivity of the halo events to the primary-composition and nuclear-interaction models. It is shown that the intensity of the halo events is most sensitive to the primary proton flux and the feature of the fragmentation region of the multiple production. The proton flux >1015 eV is estimated as nearly 3 times less than the extrapolated low-energy measurement by Ryan et al. suggesting the heavy-nuclei dominance above the knee energy of the total spectrum.

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