AbstractCrews of future high-altitude commercial aircraft may be significantly exposed to atmospheric cosmic radiation from galactic cosmic rays (GCR). To help determine such exposures, the Atmospheric Ionizing Radiation Project, an international collaboration of 15 laboratories, made simultaneous radiation measurements with 14 instruments on a NASA ER-2 high-altitude aircraft. The primary instrument was a sensitive extended-energy multisphere neutron spectrometer, which was also used to make measurements on the ground. Its detector responses were calculated for neutrons and charged hadrons at energies up to 100 GeV using the radiation transport code MCNPX. We have now recalculated the detector responses including the effects of the airplane structure. We are also using new FLUKA calculations of GCR-induced hadron spectra in the atmosphere to correct for spectrometer counts produced by charged hadrons. Neutron spectra are unfolded from the corrected measured count rates. using the MAXED code. Results for the measured cosmic-ray neutron spectrum (thermal to >10 GeV), total neutron fluence rate, and neutron dose equivalent and effective dose rates, and their dependence on altitude and geomagnetic cutoff generally agree well with results from recent calculations of GCR-induced neutron spectra.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Recent results from measurements of the energy spectrum of cosmic-ray induced neutrons aboard an ER-2 airplane and on the ground


    Beteiligte:
    Goldhagen, P. (Autor:in) / Clem, J.M. (Autor:in) / Wilson, J.W. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2003-04-22


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Recent Results from Measurements of the Energy Spectrum of Cosmic-Ray Induced Neutrons Aboard an ER-2 Airplane and on the Ground

    Goldhagen, P. / Clem, J. M. / Wilson, J. W. et al. | British Library Conference Proceedings | 2003



    Results of cosmic radiation dose field measurements aboard the “Salyut-6” orbital station

    Akatov, Yu.A. / Batenchuk, T.V. / Borodin, A.M. et al. | Elsevier | 1981


    Detection of heavy cosmic rays aboard Cosmos-936

    Tripier, J. / Debeauvais, M. | Tema Archiv | 1980


    Magnetohydrodynamics Generator with Plasma Layers as Power Source Aboard a Hypersonic Airplane

    Vadim S. Slavin / Valery M. Gavrilov / Nikolay I. Zelinsky et al. | AIAA | 2001