Essays about: "Cosmic Rays"

Showing result 21 - 25 of 30 essays containing the words Cosmic Rays.

  1. 21. Night-Time Observations of Earth : Satellite Orbit Modied for UHECR Observations

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Caroline Dahlqvist; Hanna Eriksson; [2016]
    Keywords : ;

    Abstract : Particles with energies higher than 3. 10.19 eV are generally referred to as Ultra- High Energy Cosmic Rays (UHECRs) and their sources are currently unknown. READ MORE

  3. 22. A new model and tests of the JEM-EUSO Balloon pathfinders Fresnel optics

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Abraham Neftali Díaz Damián; [2016]
    Keywords : Cosmic Rays; Fresnel Optics; Extensive Air Showers; Instrumentation;

    Abstract : EUSO-Balloon and EUSO-SPB are balloon borne pathfinder projects designed to val- idate the techniques of the JEM-EUSO space observatory. They are nadir pointing UV telescopes that use experimental experimental Fresnel optics to detect the ultravi- olet emission of Extensive Air Showers (EAS) induced by Ultra High Energy Cosmic Rays (UHECR) in the atmosphere. READ MORE

  4. 23. The Radiological Footprint of a Be-based Neutron Source

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Kärnfysik

    Author : Sharareh Koufigar; [2015]
    Keywords : Physics and Astronomy;

    Abstract : The radiological footprint of a Be-based neutron source embedded within the Aquarium of the Source-Testing Facility (STF) at the Division of Nuclear Physics at Lund University will soon be carefully mapped. As a precursor to this measurement program, neutron and gamma-ray energy spectra at beamport apertures have been measured using 3He and LaBr3(Ce) (cerium-activated lanthanum bromide) detectors. READ MORE

  5. 24. The cosmic-ray events around AD 775 and AD 993 : assessing their causes and possible effects on climate

    University essay from Lunds universitet/Geologiska institutionen

    Author : Florian Mekhaldi; [2014]
    Keywords : cosmic-rays; cosmogenic radionuclides; GICC05; NGRIP; solar proton event; storminess; Earth and Environmental Sciences;

    Abstract : Miyake et al. (2012, 2013) discovered rapid increases of 14C content in tree rings dated to AD 774-5 and AD 992-3 which were attributed to unprecedented cosmic-ray events. These extreme particle events have no counterparts in the instrumental and historical record and consequently praised great interest. READ MORE

  6. 25. On the 1932 Discovery of the Positron.

    University essay from KTH/Fysik

    Author : Alexander Lawncizak; Victor Åsbrink; [2014]
    Keywords : ;

    Abstract : An experiment on Cosmic rays performed by Carl D Anderson led to the accidental discovery of the positron in 1932. The discovery was a turning point in particle physics which led to numerous other theories and has been discussed by scientists all over the world. Anderson had photographed a 63 MeV, upward moving electron. READ MORE