نتایج جستجو برای: extensive air shower eas
تعداد نتایج: 379809 فیلتر نتایج به سال:
Ground-based cosmic ray experiments detect mainly by measuring the longitudinal and lateral distribution of secondary particles produced in extensive air shower (EAS). The EAS knee energy region is simulated via CORSIKA software. Several simulation samples with different energy, composition zenith angles were carried out to understand development electron, muon Cherenkov light EAS. All results ...
A system of large-area position-sensitive multiwire proportional chambers (MWPC), installed below the hadron calorimeter of the central detector of the KASCADE (KArlsruhe Shower Core and Array DEtector) experiment is able to observe the density distributions of high-energy muons and of the high-energy tails of the hadron spectrum in the core of extensive air showers (EAS). Applying a classi cat...
KASCADE-Grande is an air-shower observatory devoted for the detection of cosmic rays with energies in the interval of 1014 − 1018 eV, where the Grande array is responsible for the higher energy range. The experiment comprises different detection systems which allow precise measurements of the charged, electron and muon numbers of extensive air-showers (EAS). These data is employed not only to r...
Charged particles of extensive air showers (EAS), mainly electrons and positrons, initiate the emission of fluorescence light in the Earth’s atmosphere. This light provides a calorimetric measurement of the energy of cosmic rays. For reconstructing the primary energy from an observed light track of an EAS, the fluorescence yield in air has to be known in dependence on atmospheric conditions, li...
Extensive air showers (EAS) have been known for over 30 years to emit pulses of radio emission at frequencies from a few to a few hundred MHz, an effect that offers great opportunities for the study of EAS with the next generation of “software radio interferometers” such as LOFAR and LOPES. The details of the emission mechanism, however, remain rather uncertain to date. Following past suggestio...
The Muon Tracking Detector in the KASCADE-Grande experiment allows the measurement of muon directions up to 700 m from the shower center. It means, that nearly all muons produced in a shower and surviving to the ground level are subject of investigation. It is important not only for studying mean muon production heights but also for investigations of EAS muon pseudorapidity distributions. These...
the dependence of the lateral distribution of cherenkov light in simulated extensive air showers to the energy and the mass of the primary cosmic rays has been studied. it has been shown that a previous claim about mass independent proportionality of shower energy to the total cherenkov photon number is not valid in energies below eeas ~ 1014 ev. we have found that the core distance of the so c...
The interpretation of extensive air shower (EAS) measurements often requires the comparison with EAS simulations based on high-energy hadronic interaction models. These interaction models have to extrapolate into kinematical regions and energy ranges beyond the limit of present accelerators. Therefore, it is necessary to test whether these models are able to describe the EAS development in a co...
Interpretation of EAS measurements strongly depends on detailed air shower simulations. The uncertainty in the prediction of shower observables for different primary particles and energies is currently dominated by differences between hadronic interaction models. The new models QGSJET II-3 and EPOS 1.6, which reproduce all major results of existing accelerator data (including detailed data of R...
Model calculations are performed of extensive air shower (EAS) component energies using a variety of hadronic interaction parameters. A conversion factor from electromagnetic component energy to the energy of ultra-high energy cosmic rays (UHECRs) and its model and primary mass dependence is studied. It is shown that model dependence of the factor minimizes under the necessary condition of the ...
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