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 |
|---|---|
| Title of host publication | 29th International Cosmic Ray Conference, ICRC 2005 |
| Publisher | Tata Institute of Fundamental Research |
| Pages | 21-24 |
| Number of pages | 4 |
| Volume | 3 |
| Publication status | Published - 2005 |
| Externally published | Yes |
| Event | 29th International Cosmic Ray Conference, ICRC 2005 - Pune Duration: 2005 Aug 3 → 2005 Aug 10 |
Other
| Other | 29th International Cosmic Ray Conference, ICRC 2005 |
|---|---|
| City | Pune |
| Period | 05/8/3 → 05/8/10 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
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 proceeding › Conference contribution
}
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.
UR - http://www.scopus.com/inward/record.url?scp=84898968477&partnerID=8YFLogxK
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 -