A future plan in observing ultra-heavy nuclei (Z = 30-110) of cosmic rays with large-scale collector at the lunar base

Nobuyuki Hasebe, S. Kodaira, M. Hareyama, N. Yasuda

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Lunar-based measurement of galactic cosmic ray (GCR) nuclei with a high precision is a challenging approach in cosmic ray research for the coming 20 years. This approach focuses to measure the elemental composition of Pt- and Pb-groups, actinide and possibly trans-uranic nuclei of Pu and Cm. The observation covers a wide range of scientific themes including the study on the origin of GCR nuclei, the characteristic time, heating and acceleration mechanism of GCR particles. A large-scaled particle telescope is required in order to measure those nuclides with high precision. Solid state nuclear track detectors (SSTDs) with a geometric factor of about 1000 m2sr allow us to measure them easily. Fluorescent nuclear track detector such as Al2O3 doped with C and Mg is the best candidate at present among SSTDs for a lunar-based experiment which is currently the focus of an international program of scientific investigation. A permanent sunshine region near crater at lunar polar region is thought to be an excellent site. A two-year-exposure by the large-scaled telescope would result in the detection of about 30,000 actinides in GCRs.

    Original languageEnglish
    Pages (from-to)913-916
    Number of pages4
    JournalRadiation Measurements
    Volume44
    Issue number9-10
    DOIs
    Publication statusPublished - 2009 Oct

    Fingerprint

    Moon bases
    Cosmic rays
    heavy nuclei
    accumulators
    cosmic rays
    nuclei
    Actinides
    detectors
    Detectors
    particle telescopes
    gas cooled reactors
    Telescopes
    solid state
    nuclides
    craters
    polar regions
    telescopes
    Isotopes
    heating
    Heating

    Keywords

    • Cosmic ray
    • Lunar base
    • Nuclear composition
    • Nuclear track detector

    ASJC Scopus subject areas

    • Radiation
    • Instrumentation

    Cite this

    A future plan in observing ultra-heavy nuclei (Z = 30-110) of cosmic rays with large-scale collector at the lunar base. / Hasebe, Nobuyuki; Kodaira, S.; Hareyama, M.; Yasuda, N.

    In: Radiation Measurements, Vol. 44, No. 9-10, 10.2009, p. 913-916.

    Research output: Contribution to journalArticle

    Hasebe, Nobuyuki ; Kodaira, S. ; Hareyama, M. ; Yasuda, N. / A future plan in observing ultra-heavy nuclei (Z = 30-110) of cosmic rays with large-scale collector at the lunar base. In: Radiation Measurements. 2009 ; Vol. 44, No. 9-10. pp. 913-916.
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