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In this method, sheets of clear plastic, like 0.25 mm Lexan polycarbonate, are stacked together and exposed directly to cosmic rays in space or high altitude. The nuclear charge causes chemical bond breaking or ionization in the plastic. At the top of the plastic stack the ionization is less, due to the high cosmic ray speed.
The Washington Area Large-scale Time-coincidence Array (WALTA) is a cosmic ray physics experiment run by the University of Washington to investigate ultra high energy cosmic rays (>10 19 eV). The program uses detectors placed at Seattle-area high schools and colleges which are linked via the internet, effectively forming an Extensive Air Shower ...
Cosmic ray astronomy is a branch of observational astronomy where scientists attempt to identify and study the potential sources of extremely high-energy (ranging from 1 MeV to more than 1 EeV) charged particles called cosmic rays coming from outer space.
It has seen more than 30 of those ultra-high-energy cosmic rays, but none have been anywhere near the power of the ‘Oh-My-God’ particle, until now. In 2021, scientists picked up the new cosmic ...
It is unknown whether high-LET radiation could cause the same types of tumors as low-LET radiation, but differences should be expected. [9] The ratio of a dose of high-LET radiation to a dose of x-rays or gamma rays that produce the same biological effect are called relative biological effectiveness (RBE) factors. The types of tumors in humans ...
Hypotheses include Cherenkov radiation created as the cosmic ray particles pass through the vitreous humour of the astronauts' eyes, [4] [5] direct interaction with the optic nerve, [4] direct interaction with visual centres in the brain, [6] retinal receptor stimulation, [7] and a more general interaction of the retina with radiation. [8]
The duo will appear high in the southwestern sky after nightfall and will gradually slip down toward the horizon before setting around 9 p.m., local time. An encore will be visible the following ...
The diffuse gamma radiation from our Galaxy also probes the origin of cosmic rays. This radiation is due to the interaction of hadronic cosmic rays with interstellar gas, and subsequent decay of neutral pions, and the interaction of high-energy electrons with gas and radiation fields (radio, microwave, infrared, optical, UV and magnetic).