Large scale observation program of ultra heavy nuclei in galactic cosmic rays

N. Hasebe; T. Doke; M. Hareyama; S. Kodaira; T. Miyachi; M. Miyajima; O. Okudaira; K. Sakurai; S. Ota; M. Sato; Y. Shimizu; M. Takano; S. Torii; N. Yamashita; N. Yasuda; S. Nakamura; T. Kamei; H. Tawara; K. Ogura; S. Mikado; H. Shibuya; K. Nakazawa; A. J. Westphal

Large scale observation program of ultra heavy nuclei in galactic cosmic rays

N. Hasebe, T. Doke, M. Hareyama, S. Kodaira, T. Miyachi, M. Miyajima, O. Okudaira, K. Sakurai, S. Ota, M. Sato, Y. Shimizu, M. Takano, S. Torii, N. Yamashita, N. Yasuda, S. Nakamura, T. Kamei, H. Tawara, K. Ogura, S. MikadoH. Shibuya, K. Nakazawa, A. J. Westphal

School of Advanced Science and Engineering

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

Abstract

Our galaxy is filled with relativistic nuclei and electrons, being called galactic cosmic rays (GCRs). The origin of GCRs nuclei is still unknown. The precise observation of ultra heavy (UH) GCRs (Z ≥ 30) is important to resolve the remaining problems in cosmic ray astrophysics. Observation program of UH nuclei in GCRs is proposed with the use of high performance solid-state track detector (SSTD) on board long-duration balloon. The program focuses to measure the isotopic abundance above iron-peak elements and the composition of the rare ultra heavy nuclei up to actinide elements with relativistic energy. The observation of nuclear composition covers a wide range of scientific themes including studies of nucleosynthesis of cosmic ray sources, chemical evolution of galactic material, the characteristic time of cosmic rays, heating and acceleration mechanism of cosmic ray particles. In order to achieve the objectives, the super-ressure balloon capable of carrying very large scientific payloads for long extended period is best suited. The possible approach based on a large telescope array consisting of modularized SSTD stacks is described.

Original language	English
Pages	51-54
Number of pages	4
Publication status	Published - 2007
Event	30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan, Mexico Duration: 2007 Jul 3 → 2007 Jul 11

Other

Other	30th International Cosmic Ray Conference, ICRC 2007
Country/Territory	Mexico
City	Merida, Yucatan
Period	07/7/3 → 07/7/11

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Hasebe, N., Doke, T., Hareyama, M., Kodaira, S., Miyachi, T., Miyajima, M., Okudaira, O., Sakurai, K., Ota, S., Sato, M., Shimizu, Y., Takano, M., Torii, S., Yamashita, N., Yasuda, N., Nakamura, S., Kamei, T., Tawara, H., Ogura, K., ... Westphal, A. J. (2007). Large scale observation program of ultra heavy nuclei in galactic cosmic rays. 51-54. Paper presented at 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, Mexico.

Hasebe, N, Doke, T, Hareyama, M, Kodaira, S, Miyachi, T, Miyajima, M, Okudaira, O, Sakurai, K, Ota, S, Sato, M, Shimizu, Y, Takano, M, Torii, S, Yamashita, N, Yasuda, N, Nakamura, S, Kamei, T, Tawara, H, Ogura, K, Mikado, S, Shibuya, H, Nakazawa, K & Westphal, AJ 2007, 'Large scale observation program of ultra heavy nuclei in galactic cosmic rays', Paper presented at 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, Mexico, 07/7/3 - 07/7/11 pp. 51-54.

@conference{2903db83648244aaaba844bee858cddd,

title = "Large scale observation program of ultra heavy nuclei in galactic cosmic rays",

abstract = "Our galaxy is filled with relativistic nuclei and electrons, being called galactic cosmic rays (GCRs). The origin of GCRs nuclei is still unknown. The precise observation of ultra heavy (UH) GCRs (Z ≥ 30) is important to resolve the remaining problems in cosmic ray astrophysics. Observation program of UH nuclei in GCRs is proposed with the use of high performance solid-state track detector (SSTD) on board long-duration balloon. The program focuses to measure the isotopic abundance above iron-peak elements and the composition of the rare ultra heavy nuclei up to actinide elements with relativistic energy. The observation of nuclear composition covers a wide range of scientific themes including studies of nucleosynthesis of cosmic ray sources, chemical evolution of galactic material, the characteristic time of cosmic rays, heating and acceleration mechanism of cosmic ray particles. In order to achieve the objectives, the super-ressure balloon capable of carrying very large scientific payloads for long extended period is best suited. The possible approach based on a large telescope array consisting of modularized SSTD stacks is described.",

author = "N. Hasebe and T. Doke and M. Hareyama and S. Kodaira and T. Miyachi and M. Miyajima and O. Okudaira and K. Sakurai and S. Ota and M. Sato and Y. Shimizu and M. Takano and S. Torii and N. Yamashita and N. Yasuda and S. Nakamura and T. Kamei and H. Tawara and K. Ogura and S. Mikado and H. Shibuya and K. Nakazawa and Westphal, {A. J.}",

year = "2007",

language = "English",

pages = "51--54",

note = "30th International Cosmic Ray Conference, ICRC 2007 ; Conference date: 03-07-2007 Through 11-07-2007",

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TY - CONF

T1 - Large scale observation program of ultra heavy nuclei in galactic cosmic rays

AU - Hasebe, N.

AU - Doke, T.

AU - Hareyama, M.

AU - Kodaira, S.

AU - Miyachi, T.

AU - Miyajima, M.

AU - Okudaira, O.

AU - Sakurai, K.

AU - Ota, S.

AU - Sato, M.

AU - Shimizu, Y.

AU - Takano, M.

AU - Torii, S.

AU - Yamashita, N.

AU - Yasuda, N.

AU - Nakamura, S.

AU - Kamei, T.

AU - Tawara, H.

AU - Ogura, K.

AU - Mikado, S.

AU - Shibuya, H.

AU - Nakazawa, K.

AU - Westphal, A. J.

PY - 2007

Y1 - 2007

N2 - Our galaxy is filled with relativistic nuclei and electrons, being called galactic cosmic rays (GCRs). The origin of GCRs nuclei is still unknown. The precise observation of ultra heavy (UH) GCRs (Z ≥ 30) is important to resolve the remaining problems in cosmic ray astrophysics. Observation program of UH nuclei in GCRs is proposed with the use of high performance solid-state track detector (SSTD) on board long-duration balloon. The program focuses to measure the isotopic abundance above iron-peak elements and the composition of the rare ultra heavy nuclei up to actinide elements with relativistic energy. The observation of nuclear composition covers a wide range of scientific themes including studies of nucleosynthesis of cosmic ray sources, chemical evolution of galactic material, the characteristic time of cosmic rays, heating and acceleration mechanism of cosmic ray particles. In order to achieve the objectives, the super-ressure balloon capable of carrying very large scientific payloads for long extended period is best suited. The possible approach based on a large telescope array consisting of modularized SSTD stacks is described.

AB - Our galaxy is filled with relativistic nuclei and electrons, being called galactic cosmic rays (GCRs). The origin of GCRs nuclei is still unknown. The precise observation of ultra heavy (UH) GCRs (Z ≥ 30) is important to resolve the remaining problems in cosmic ray astrophysics. Observation program of UH nuclei in GCRs is proposed with the use of high performance solid-state track detector (SSTD) on board long-duration balloon. The program focuses to measure the isotopic abundance above iron-peak elements and the composition of the rare ultra heavy nuclei up to actinide elements with relativistic energy. The observation of nuclear composition covers a wide range of scientific themes including studies of nucleosynthesis of cosmic ray sources, chemical evolution of galactic material, the characteristic time of cosmic rays, heating and acceleration mechanism of cosmic ray particles. In order to achieve the objectives, the super-ressure balloon capable of carrying very large scientific payloads for long extended period is best suited. The possible approach based on a large telescope array consisting of modularized SSTD stacks is described.

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M3 - Paper

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T2 - 30th International Cosmic Ray Conference, ICRC 2007

Y2 - 3 July 2007 through 11 July 2007

ER -

Large scale observation program of ultra heavy nuclei in galactic cosmic rays

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