We perform Monte Carlo simulations of cascades initiated by photons with parameters of the highest energy showers observed by the past and present detectors (AGASA, Fly's Eye, Yakutsk, Haverah Park). The purpose is to find out which events should cascade with high probability if initiated by ...
We search for ultra‐high energy photons by analyzing geometrical properties of shower fronts of events registered by the Telescope Array surface detector. By making use of an event‐by‐event statistical method, we derive an upper limit on the absolute flux of primary photons with energies above...
greater than seven standard deviations. Despite having several potential counterparts in their proximity, including pulsar wind nebulae, supernova remnants and star-forming regions, the PeVatrons responsible for the ultrahigh-energy γ-rays have not yet been firmly localized and identified (except for t...
Ultra-high-energy physics is about to enter a new era thanks to the impressive results of experiments such as theLarge High Altitude Air Shower Observatory, detecting photons of up to1.4\times 10^{15}eV (PeV scale). These new results could be used to test deviations with respect to special...
When the IMRT plan was reoptimized with an increased precedence to the normal tissues, the mean doses to all neighboring organs at risk could be reduced, but only at the cost of substantial target dose heterogeneity.Conclusions: In comparison with the standard plan, IMRT photons have the ...
The Astrophysics of Ultrahigh Energy Cosmic Rays The origin of the highest energy cosmic rays is still unknown. The discovery of their sources is expected to reveal the workings of the most energetic astr... K Kotera,AV Olinto - 《Physics》 被引量: 291发表: 2011年 ...
How many photons of blue light with a wavelength of 400 nm have the same energy as one single x-ray photon with a wavelength of 0.4 nm? Light from a certain lamp is brightest at a wavelength of 663nm. What is the photon energy for ...
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It's quite a feeling when you realize you have saved hundreds of lives. You are smart enough to know that Newton's Law works consistently. What goes up, comes down: what goes around comes around. Join with the Shortcuts Zen of Mastery, solving problems, ...
Which radiations has the strongest photon? Each section of the electromagnetic (EM) spectrum has characteristic energy levels, wavelengths, and frequencies associated with its photons.Gamma rayshave the highest energies, the shortest wavelengths, and the highest frequencies. ...