Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment

M. Ichimura; V. A. Derbina; V. I. Galkin; M. Hareyama; Y. Hirakawa; Y. Horiuchi; N. Inoue; E. Kamioka; T. Kobayashi; V. V. Kopenkin; S. Kuramata; A. K. Managadze; H. Matsutani; N. P. Misnikova; R. A. Mukhamedshin; S. Nagasawa; R. Nakano; M. Namiki; M. Nakazawa; H. Nanjo; S. N. Nazarov; S. Ohata; H. Ohtomo; V. I. Osedlo; D. S. Oshuev; P. A. Publichenko; I. V. Rakobolskaya; T. M. Roganova; C. Saito; G. P. Sazhina; H. Semba; T. Shibata; D. Shuto; H. Sugimoto; R. Suzuki; L. G. Sveshnikova; V. M. Taran; N. Yajima; T. Yamagami; I. V. Yashin; E. A. Zamchalova; G. T. Zatsepin; I. S. Zayarnaya

Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment

M. Ichimura, V. A. Derbina, V. I. Galkin, M. Hareyama, Y. Hirakawa, Y. Horiuchi, N. Inoue, E. Kamioka, T. Kobayashi, V. V. Kopenkin, S. Kuramata, A. K. Managadze, H. Matsutani, N. P. Misnikova, R. A. Mukhamedshin, S. Nagasawa, R. Nakano, M. Namiki, M. Nakazawa, H. NanjoS. N. Nazarov, S. Ohata, H. Ohtomo, V. I. Osedlo, D. S. Oshuev, P. A. Publichenko, I. V. Rakobolskaya, T. M. Roganova, C. Saito, G. P. Sazhina, H. Semba, T. Shibata, D. Shuto, H. Sugimoto, R. Suzuki, L. G. Sveshnikova, V. M. Taran, N. Yajima, T. Yamagami, I. V. Yashin, E. A. Zamchalova, G. T. Zatsepin, I. S. Zayarnaya

Research output: Contribution to conference › Paper › peer-review

2 Citations (Scopus)

Abstract

RUNJOB final results on the energy spectra of primary heavy cosmic ray components are presented. Data are from ten RUNJOB campaigns performed from 1995 through 1999. And the energy spectra of CNO, NeMgSi and Fe groups are shown here as well as the energy dependence of the secondary/primary ratio. We find our heavy component spectra are in agreement with the extrapolation from those at lower energies obtained by CRN (Chicago group), monotonically decreasing with energy, in contrast to JACEE and SOKOL data, which indicated a gradual increase with energy, particularly for the CNO group at ̃ 5 TeV/nucleon. As for the secondary to primary ratio we have observed in TeV/nucleon energy region, it is difficult to determine the energy dependence of their average path lengths by the RUNJOB data only, because the large uncertainty of atmospheric corrections due to the poor statistics exists.

Original language	English
Pages	21-24
Number of pages	4
Publication status	Published - 2005
Externally published	Yes
Event	29th International Cosmic Ray Conference, ICRC 2005 - Pune, India Duration: 2005 Aug 3 → 2005 Aug 10

Conference

Conference	29th International Cosmic Ray Conference, ICRC 2005
Country	India
City	Pune
Period	05/8/3 → 05/8/10

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Ichimura, M., Derbina, V. A., Galkin, V. I., Hareyama, M., Hirakawa, Y., Horiuchi, Y., Inoue, N., Kamioka, E., Kobayashi, T., Kopenkin, V. V., Kuramata, S., Managadze, A. K., Matsutani, H., Misnikova, N. P., Mukhamedshin, R. A., Nagasawa, S., Nakano, R., Namiki, M., Nakazawa, M., ... Zayarnaya, I. S. (2005). Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment. 21-24. Paper presented at 29th International Cosmic Ray Conference, ICRC 2005, Pune, India.

Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment. / Ichimura, M.; Derbina, V. A.; Galkin, V. I.; Hareyama, M.; Hirakawa, Y.; Horiuchi, Y.; Inoue, N.; Kamioka, E.; Kobayashi, T.; Kopenkin, V. V.; Kuramata, S.; Managadze, A. K.; Matsutani, H.; Misnikova, N. P.; Mukhamedshin, R. A.; Nagasawa, S.; Nakano, R.; Namiki, M.; Nakazawa, M.; Nanjo, H.; Nazarov, S. N.; Ohata, S.; Ohtomo, H.; Osedlo, V. I.; Oshuev, D. S.; Publichenko, P. A.; Rakobolskaya, I. V.; Roganova, T. M.; Saito, C.; Sazhina, G. P.; Semba, H.; Shibata, T.; Shuto, D.; Sugimoto, H.; Suzuki, R.; Sveshnikova, L. G.; Taran, V. M.; Yajima, N.; Yamagami, T.; Yashin, I. V.; Zamchalova, E. A.; Zatsepin, G. T.; Zayarnaya, I. S.

2005. 21-24 Paper presented at 29th International Cosmic Ray Conference, ICRC 2005, Pune, India.

Research output: Contribution to conference › Paper › peer-review

Ichimura, M, Derbina, VA, Galkin, VI, Hareyama, M, Hirakawa, Y, Horiuchi, Y, Inoue, N, Kamioka, E, Kobayashi, T, Kopenkin, VV, Kuramata, S, Managadze, AK, Matsutani, H, Misnikova, NP, Mukhamedshin, RA, Nagasawa, S, Nakano, R, Namiki, M, Nakazawa, M, Nanjo, H, Nazarov, SN, Ohata, S, Ohtomo, H, Osedlo, VI, Oshuev, DS, Publichenko, PA, Rakobolskaya, IV, Roganova, TM, Saito, C, Sazhina, GP, Semba, H, Shibata, T, Shuto, D, Sugimoto, H, Suzuki, R, Sveshnikova, LG, Taran, VM, Yajima, N, Yamagami, T, Yashin, IV, Zamchalova, EA, Zatsepin, GT & Zayarnaya, IS 2005, 'Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment', Paper presented at 29th International Cosmic Ray Conference, ICRC 2005, Pune, India, 05/8/3 - 05/8/10 pp. 21-24.

Ichimura, M. ; Derbina, V. A. ; Galkin, V. I. ; Hareyama, M. ; Hirakawa, Y. ; Horiuchi, Y. ; Inoue, N. ; Kamioka, E. ; Kobayashi, T. ; Kopenkin, V. V. ; Kuramata, S. ; Managadze, A. K. ; Matsutani, H. ; Misnikova, N. P. ; Mukhamedshin, R. A. ; Nagasawa, S. ; Nakano, R. ; Namiki, M. ; Nakazawa, M. ; Nanjo, H. ; Nazarov, S. N. ; Ohata, S. ; Ohtomo, H. ; Osedlo, V. I. ; Oshuev, D. S. ; Publichenko, P. A. ; Rakobolskaya, I. V. ; Roganova, T. M. ; Saito, C. ; Sazhina, G. P. ; Semba, H. ; Shibata, T. ; Shuto, D. ; Sugimoto, H. ; Suzuki, R. ; Sveshnikova, L. G. ; Taran, V. M. ; Yajima, N. ; Yamagami, T. ; Yashin, I. V. ; Zamchalova, E. A. ; Zatsepin, G. T. ; Zayarnaya, I. S. / Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment. Paper presented at 29th International Cosmic Ray Conference, ICRC 2005, Pune, India.4 p.

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title = "Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment",

abstract = "RUNJOB final results on the energy spectra of primary heavy cosmic ray components are presented. Data are from ten RUNJOB campaigns performed from 1995 through 1999. And the energy spectra of CNO, NeMgSi and Fe groups are shown here as well as the energy dependence of the secondary/primary ratio. We find our heavy component spectra are in agreement with the extrapolation from those at lower energies obtained by CRN (Chicago group), monotonically decreasing with energy, in contrast to JACEE and SOKOL data, which indicated a gradual increase with energy, particularly for the CNO group at{\~ } 5 TeV/nucleon. As for the secondary to primary ratio we have observed in TeV/nucleon energy region, it is difficult to determine the energy dependence of their average path lengths by the RUNJOB data only, because the large uncertainty of atmospheric corrections due to the poor statistics exists.",

author = "M. Ichimura and Derbina, {V. A.} and Galkin, {V. I.} and M. Hareyama and Y. Hirakawa and Y. Horiuchi and N. Inoue and E. Kamioka and T. Kobayashi and Kopenkin, {V. V.} and S. Kuramata and Managadze, {A. K.} and H. Matsutani and Misnikova, {N. P.} and Mukhamedshin, {R. A.} and S. Nagasawa and R. Nakano and M. Namiki and M. Nakazawa and H. Nanjo and Nazarov, {S. N.} and S. Ohata and H. Ohtomo and Osedlo, {V. I.} and Oshuev, {D. S.} and Publichenko, {P. A.} and Rakobolskaya, {I. V.} and Roganova, {T. M.} and C. Saito and Sazhina, {G. P.} and H. Semba and T. Shibata and D. Shuto and H. Sugimoto and R. Suzuki and Sveshnikova, {L. G.} and Taran, {V. M.} and N. Yajima and T. Yamagami and Yashin, {I. V.} and Zamchalova, {E. A.} and Zatsepin, {G. T.} and Zayarnaya, {I. S.}",

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TY - CONF

T1 - Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment

AU - Ichimura, M.

AU - Derbina, V. A.

AU - Galkin, V. I.

AU - Hareyama, M.

AU - Hirakawa, Y.

AU - Horiuchi, Y.

AU - Inoue, N.

AU - Kamioka, E.

AU - Kobayashi, T.

AU - Kopenkin, V. V.

AU - Kuramata, S.

AU - Managadze, A. K.

AU - Matsutani, H.

AU - Misnikova, N. P.

AU - Mukhamedshin, R. A.

AU - Nagasawa, S.

AU - Nakano, R.

AU - Namiki, M.

AU - Nakazawa, M.

AU - Nanjo, H.

AU - Nazarov, S. N.

AU - Ohata, S.

AU - Ohtomo, H.

AU - Osedlo, V. I.

AU - Oshuev, D. S.

AU - Publichenko, P. A.

AU - Rakobolskaya, I. V.

AU - Roganova, T. M.

AU - Saito, C.

AU - Sazhina, G. P.

AU - Semba, H.

AU - Shibata, T.

AU - Shuto, D.

AU - Sugimoto, H.

AU - Suzuki, R.

AU - Sveshnikova, L. G.

AU - Taran, V. M.

AU - Yajima, N.

AU - Yamagami, T.

AU - Yashin, I. V.

AU - Zamchalova, E. A.

AU - Zatsepin, G. T.

AU - Zayarnaya, I. S.

PY - 2005

Y1 - 2005

N2 - RUNJOB final results on the energy spectra of primary heavy cosmic ray components are presented. Data are from ten RUNJOB campaigns performed from 1995 through 1999. And the energy spectra of CNO, NeMgSi and Fe groups are shown here as well as the energy dependence of the secondary/primary ratio. We find our heavy component spectra are in agreement with the extrapolation from those at lower energies obtained by CRN (Chicago group), monotonically decreasing with energy, in contrast to JACEE and SOKOL data, which indicated a gradual increase with energy, particularly for the CNO group at ̃ 5 TeV/nucleon. As for the secondary to primary ratio we have observed in TeV/nucleon energy region, it is difficult to determine the energy dependence of their average path lengths by the RUNJOB data only, because the large uncertainty of atmospheric corrections due to the poor statistics exists.

AB - RUNJOB final results on the energy spectra of primary heavy cosmic ray components are presented. Data are from ten RUNJOB campaigns performed from 1995 through 1999. And the energy spectra of CNO, NeMgSi and Fe groups are shown here as well as the energy dependence of the secondary/primary ratio. We find our heavy component spectra are in agreement with the extrapolation from those at lower energies obtained by CRN (Chicago group), monotonically decreasing with energy, in contrast to JACEE and SOKOL data, which indicated a gradual increase with energy, particularly for the CNO group at ̃ 5 TeV/nucleon. As for the secondary to primary ratio we have observed in TeV/nucleon energy region, it is difficult to determine the energy dependence of their average path lengths by the RUNJOB data only, because the large uncertainty of atmospheric corrections due to the poor statistics exists.

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M3 - Paper

AN - SCOPUS:84898968477

SP - 21

EP - 24

T2 - 29th International Cosmic Ray Conference, ICRC 2005

Y2 - 3 August 2005 through 10 August 2005

ER -