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  • Science Update: Armenia

    PRESS RELEASE
    Joseph Dagdigian
    42 Simon Atherton Row
    Harvard, MA 01451
    978 772-9417
    www.crdfriends.org



    Science Update: Armenia

    Young CRD Scientists at International Cosmic Ray Conference, Beijing
    The 32nd International Cosmic Ray Conference (ICRC2011), hosted and
    organized by the Institute of High Energy Physics and the Chinese
    Academy of Sciences, was held in Beijing from August 11 to August 18,
    2011. Following the tradition of past conferences, the ICRC2011 dealt
    with a broad range of topics covering cosmic ray physics, gamma-ray
    astronomy, solar physics, and high energy phenomena in the terrestrial
    atmosphere.

    Armenia's delegation from the Cosmic Ray Division of the Artem
    Alikhanyan National Laboratory (Yerevan Physics Institute),included
    Bagrat Mailyan, Romen Martirosov, and Levon Vanyan who reported on the
    research being conducted at the Cosmic Ray Division:

    Bagrat Mailyan, a recent young PhD recipient, presented two papers on
    CRD's research: "/Thunderstorm Ground Enhancements (TGE-s)/" detected
    at CRD's Aragats research station and "/The energy spectra of the
    thunderstorm correlated electron and gamma ray fluxes measured at
    Aragats/". Both talks described research into the new field of gamma
    rays generated within the earth's atmosphere by thunderstorms.

    Romen Martirosov's talk was entitled "/Energy spectrum and mass
    composition of primary cosmic radiation in the region above the knee
    from the GAMMA experiment/".

    Levon Vanyan discussed /"Simulations of the Relativistic Runaway
    Electron Avalanches (RREA) in the thunderclouds above the Aragats Space
    Environmental Center (ASEC)/".

    Medical Diagnostic Consortium in Armenia
    On September 2, 2011 a memorandum was signed between Armenia's National
    Center of Oncology (NCO), the Institute of Informatics and Automation
    Problems (IIAP), the Institute of Physical Research (IPR), and the Artem
    Alikhanyan National Laboratory (AANL) represented by their respective
    directors: H.M. Galstyan, V.G. Sahakyan, A.V. Papoyan and A. Chilingarian.

    AANL's director Professor A. Chilingarian, in his opening remarks,
    presented development perspectives for medical diagnostic systems;
    namely radioactive isotope production for scanners and digital X-ray
    image detectors for diagnostic imaging.

    H.M. Galstyan citing the importance of medical physics research being
    done at the AANL, outlined the necessity of upgrading currently used
    X-ray diagnostic devices with modern digital imaging systems.

    "The High Spatial Resolution X-ray Image Detector", designed and
    fabricated by the X-ray Instrumentation Group, was described by M.
    Lazarian. Clinical tests of the detector are to be performed at
    National Center of Oncology, using scintillation crystals which are
    grown in Armenia's Physical Research Institute.

    A memorandum was signed confirming the intention of jointly developing a
    3D digital image registration system for mammography. A newly formed
    working group of representatives from participating organizations will
    prepare a development proposal within two months.

    Artem Alikhanyan National Laboratory at EXPO Armenia 2011
    >From September 9 to September 11 scientists and engineers of Artem
    Alikhanyan National Laboratory (AANL) participated in "EXPO Armenia
    2011". The AANL demonstrated or described a range of products
    including: accelerator beam sensors/scanners for diagnostic usage, high
    temperature furnaces and insulating materials fabricated with Armenian
    raw materials, custom-made solar hot water heating systems, equipment
    for large scale radiation sterilization of medical material, and high
    purity gaseous and liquid oxygen and nitrogen.

    The exhibition attracted many visitors, from amateurs to business
    managers, with task-specific requirements including tight thermal
    control ovens for growing crystals, heaters for moderate temperature
    applications, dental furnaces, jewelry furnaces, furnaces for the
    production of studio pottery as well as for glass processing.

    Other commercial developments of AANL were illustrated in a Russian
    language booklet which was distributed to attendees. Within the booklet
    was described the production ofan important radio isotope, Tc-99m
    (Technium 99), which is commonly used in the diagnoses of cardiovascular
    disease and cancer. Tc-99 is produced in AANL's linear electron
    accelerator. This material has a half life of approximately 6 hours,
    meaning that within each 6 hour period half of the Technium decays into
    other substances. Given Armenia's location and isolation, and the time
    and expense involved in importing this material from sources outside
    Armenia, the availability of Tc-99 can be better assured by production
    within Armenia. This development presents an opportunity to improve
    Armenia's health infrastructure and establishes an export opportunity to
    other countries within the region.

    Cosmic Ray Division Registers Intense Solar Flares
    On September 9, 2011 Armenia's Cosmic Ray Division of the Artem
    Alikhanyan National Laboratories registered four intense solar flares at
    its Aragats Research Station near the summit of Armenia's Mt. Aragats.
    The strong X-ray radiation, since it travels at the speed of light, was
    the first radiation detected and was measured by the GEOS 15 satellite.
    Subsequent arrival of solar cosmic ray particles was detected by the
    Cosmic Ray Division's Neutron Monitor array at the Aragats Research
    Station. The solar flares were accompanied by Coronal Mass Ejections
    (CMEs) in which huge clouds of ionized particle with strong magnetic
    fields were ejected from the sun towards the earth. The resulting
    geomagnetic storm, with a "Kp" index of7 (out of a maximum of 9)
    resulted in disturbances to the Earth's magnetic field.

    The Cosmic Ray Division has one of the world's largest arrays of cosmic
    ray particle detectors. Its neutron monitors are part of the world wide
    neutronmonitoring network.

    General information with photographs about Armenia's Cosmic Ray Division
    may be found at www.aragats.am


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