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, Eiji 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 & 23 others 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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publication29th International Cosmic Ray Conference, ICRC 2005
PublisherTata Institute of Fundamental Research
Pages21-24
Number of pages4
Volume3
Publication statusPublished - 2005
Externally publishedYes
Event29th International Cosmic Ray Conference, ICRC 2005 - Pune
Duration: 2005 Aug 32005 Aug 10

Other

Other29th International Cosmic Ray Conference, ICRC 2005
CityPune
Period05/8/305/8/10

Fingerprint

energy
heavy cosmic ray primaries
energy spectra
atmospheric correction
extrapolation
statistics

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Ichimura, M., Derbina, V. A., Galkin, V. I., Hareyama, M., Hirakawa, Y., Horiuchi, Y., ... Zayarnaya, I. S. (2005). Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment. In 29th International Cosmic Ray Conference, ICRC 2005 (Vol. 3, pp. 21-24). Tata Institute of Fundamental Research.

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, Eiji; 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.

29th International Cosmic Ray Conference, ICRC 2005. Vol. 3 Tata Institute of Fundamental Research, 2005. p. 21-24.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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. in 29th International Cosmic Ray Conference, ICRC 2005. vol. 3, Tata Institute of Fundamental Research, pp. 21-24, 29th International Cosmic Ray Conference, ICRC 2005, Pune, 05/8/3.
Ichimura M, Derbina VA, Galkin VI, Hareyama M, Hirakawa Y, Horiuchi Y et al. Heavy component spectra and secondary to primary ratios obtained by RUNJOB experiment. In 29th International Cosmic Ray Conference, ICRC 2005. Vol. 3. Tata Institute of Fundamental Research. 2005. p. 21-24
Ichimura, M. ; Derbina, V. A. ; Galkin, V. I. ; Hareyama, M. ; Hirakawa, Y. ; Horiuchi, Y. ; Inoue, N. ; Kamioka, Eiji ; 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. 29th International Cosmic Ray Conference, ICRC 2005. Vol. 3 Tata Institute of Fundamental Research, 2005. pp. 21-24
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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 Eiji 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 - GEN

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, Eiji

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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UR - http://www.scopus.com/inward/citedby.url?scp=84898968477&partnerID=8YFLogxK

M3 - Conference contribution

VL - 3

SP - 21

EP - 24

BT - 29th International Cosmic Ray Conference, ICRC 2005

PB - Tata Institute of Fundamental Research

ER -