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

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

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

    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 languageEnglish
    Title of host publicationProceedings of the 30th International Cosmic Ray Conference, ICRC 2007
    PublisherUniversidad Nacional Autonoma de Mexico
    Pages51-54
    Number of pages4
    Volume2
    EditionOG PART 1
    Publication statusPublished - 2007
    Event30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan
    Duration: 2007 Jul 32007 Jul 11

    Other

    Other30th International Cosmic Ray Conference, ICRC 2007
    CityMerida, Yucatan
    Period07/7/307/7/11

    Fingerprint

    heavy nuclei
    cosmic rays
    balloons
    solid state
    nuclei
    chemical evolution
    detectors
    nuclear fusion
    payloads
    astrophysics
    telescopes
    galaxies
    iron
    heating
    electrons
    energy

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Hasebe, N., Doke, T., Hareyama, M., Kodaira, S., Miyachi, T., Miyajima, M., ... Westphal, A. J. (2007). Large scale observation program of ultra heavy nuclei in galactic cosmic rays. In Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007 (OG PART 1 ed., Vol. 2, pp. 51-54). Universidad Nacional Autonoma de Mexico.

    Large scale observation program of ultra heavy nuclei in galactic cosmic rays. / Hasebe, Nobuyuki; Doke, T.; Hareyama, M.; Kodaira, S.; Miyachi, T.; Miyajima, M.; Okudaira, O.; Sakurai, K.; Ota, S.; Sato, M.; Shimizu, Y.; Takano, Masatoshi; Torii, Shoji; Yamashita, N.; Yasuda, N.; Nakamura, S.; Kamei, T.; Tawara, H.; Ogura, K.; Mikado, S.; Shibuya, H.; Nakazawa, K.; Westphal, A. J.

    Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. Vol. 2 OG PART 1. ed. Universidad Nacional Autonoma de Mexico, 2007. p. 51-54.

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

    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. in Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. OG PART 1 edn, vol. 2, Universidad Nacional Autonoma de Mexico, pp. 51-54, 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, 07/7/3.
    Hasebe N, Doke T, Hareyama M, Kodaira S, Miyachi T, Miyajima M et al. Large scale observation program of ultra heavy nuclei in galactic cosmic rays. In Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. OG PART 1 ed. Vol. 2. Universidad Nacional Autonoma de Mexico. 2007. p. 51-54
    Hasebe, Nobuyuki ; Doke, T. ; Hareyama, M. ; Kodaira, S. ; Miyachi, T. ; Miyajima, M. ; Okudaira, O. ; Sakurai, K. ; Ota, S. ; Sato, M. ; Shimizu, Y. ; Takano, Masatoshi ; Torii, Shoji ; Yamashita, N. ; Yasuda, N. ; Nakamura, S. ; Kamei, T. ; Tawara, H. ; Ogura, K. ; Mikado, S. ; Shibuya, H. ; Nakazawa, K. ; Westphal, A. J. / Large scale observation program of ultra heavy nuclei in galactic cosmic rays. Proceedings of the 30th International Cosmic Ray Conference, ICRC 2007. Vol. 2 OG PART 1. ed. Universidad Nacional Autonoma de Mexico, 2007. pp. 51-54
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    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 = "Nobuyuki 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 Masatoshi Takano and Shoji 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.}",
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    AU - Hasebe, Nobuyuki

    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, Masatoshi

    AU - Torii, Shoji

    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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