Keyword: protons
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Tiny cosmic particles can have serious impacts on Earth, causing election votes to be miscounted, planes to free-fall and computers to reboot, scientists say.These cosmic particles can hit electronic devices on Earth, which can cause components to burn out and cause malfunctions. Cosmic particles come from cosmic rays from outside our solar system. They crash into the Earth's atmosphere creating a range of particles, including protons, electrons, X-rays and gamma-rays that can penetrate aircraft.These cosmic particles constantly hit Earth, and can cause bits of information in electronics to change.
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Caption:When measuring a nucleus with a certain “magic” number of neutrons — 82 — the magnetic field of the nucleus exhibits a drastic change, and the properties of these very complex nuclei appear to be governed by just one of the protons of the nucleus. Credit: Adam Vernon ================================================================================================== A curious thing happened when MIT researchers Adam Vernon and Ronald Garcia Ruiz, along an international team of scientists, recently performed an experiment in which a sensitive laser spectroscopy technique was used to measure how the nuclear electromagnetic properties of indium isotopes evolve when an extreme number of neutrons are added...
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The collaboration has observed a new kind of “pentaquark” and the first-ever pair of “tetraquarks” The international LHCb collaboration at the Large Hadron Collider (LHC) has observed three never-before-seen particles: a new kind of “pentaquark” and the first-ever pair of “tetraquarks”, which includes a new type of tetraquark. The findings, presented today at a CERN seminar, add three new exotic members to the growing list of new hadrons found at the LHC. They will help physicists better understand how quarks bind together into these composite particles. Quarks are elementary particles and come in six flavours: up, down, charm, strange, top...
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A few years ago, a novel measurement technique showed that protons are probably smaller than had been assumed since the 1990s. The discrepancy surprised the scientific community; some researchers even believed that the Standard Model of particle physics would have to be changed. Physicists at the University of Bonn and the Technical University of Darmstadt have now developed a method that allows them to analyze the results of older and more recent experiments much more comprehensively than before. This also results in a smaller proton radius from the older data. So there is probably no difference between the values -...
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Scientists have discovered a new type of uranium that is the lightest ever known. The discovery could reveal more about a weird alpha particle that gets ejected from certain radioactive elements as they decay. The newfound uranium, called uranium-214, is an isotope, or a variant of the element, with 30 more neutrons than protons, one fewer neutron than the next-lightest known uranium isotope. Because neutrons have mass, uranium-214 is much lighter than more common uranium isotopes, including uranium-235, which is used in nuclear reactors and has 51 extra neutrons. This newfound isotope isn't just lighter than others, but it also...
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Scientists are celebrating the long-sought discovery of the odderon, a strange phenomenon that appears only rarely when protons collide at high energies, such as inside particle accelerators. Though the odderon was first predicted to exist in the early 1970s, it wasn’t until recently that physicists finally gathered the data they needed at CERN’s Large Hadron Collider to confirm a true discovery. The discovery contributes to physicists’ understanding of how all the matter in the universe interacts at the smallest levels. Unlike the famous Higgs boson, which was officially discovered in 2012, the odderon isn’t a particle exactly. Instead, it’s the...
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An international team of researchers from University College Dublin (UCD) and University of Saskatchewan, Canada, have observed 'proton-hopping' movement in a high-pressure form of ice (Ice VII lattices). Ordinary water ice is known as Ice I, while Ice VII is a cubic crystalline form of ice which can be formed from liquid water above 3 GPa (30,000 atmospheres) by lowering its temperature to room temperature, or by decompressing heavy water (D2O) Ice VI below 95 K. Ice VII has a simple structure of two inter-penetrating, and effectively independent, cubic-ice sub-lattices, and is stable across a wide-ranging region above 2 GPa....
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Ever since Voyager 2 beamed home spectacular images of the planets in the 1980s, planet-lovers have been hooked on auroras on other planets. Auroras are caused by streams of charged particles like electrons that come from various origins such as solar winds, the planetary ionosphere, and moon volcanism. They become caught in powerful magnetic fields and are channeled into the upper atmosphere, where their interactions with gas particles, such as oxygen or nitrogen, set off spectacular bursts of light.
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When they weren’t calling the purple, ribbon-like light Steve, the Facebook group referred to it as a “proton arc,” notes ABC News. But when a Canadian physicist and astronomer who studies aurorae looked at the photos, he suspected something more was afoot—especially since proton aurorae, which happen when protons from solar winds hit Earth's magnetic field, are usually too dark to be visible.
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NASA Begins Testing of Revolutionary E-Sail Technology NASA engineers are conducting tests to develop models for the Heliopause Electrostatic Rapid Transport System (HERTS) concept. HERTS builds upon the electric sail invention of Dr. Pekka Janhunen of the Finnish Meteorological Institute. An electric sail could potentially send scientific payloads to the edge of our solar system, the heliopause, in less than 10 years. The research is led by Bruce M. Wiegmann, an engineer in the Advanced Concepts Office at NASA's Marshall Space Flight Center in Huntsville, Alabama. The HERTS E-Sail concept development and testing is funded by NASA's Space Technology...
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(Reuters) - Scientists at the CERN research center say their "Big Bang" project is going beyond all expectations and the first proof of the existence of dimensions beyond the known four could emerge next year. In surveys of results of nearly 8 months of experiments in their Large Hadron Collider (LHC), they also say they may be able to determine by the end of 2011 whether the mystery Higgs particle, or boson, exists. Guido Tonelli, spokesman for one of the CERN specialist teams monitoring operations in the vast, subterranean LHC, said probing for extra dimensions -- besides length, breadth, height...
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An international team measures the charge radius of the hydrogen nucleus and stumbles across some mysteries of physics Big problems sometimes come in small packages. The problem with which physicists must now concern themselves measures a mere 0.0350 millionth of a millionth of a millimetre. This is precisely the difference between the new, smaller, dimension of the proton, the nucleus of the hydrogen atom, and the value which has been assumed so far. Instead of 0.8768 femtometres it measures only 0.8418 femtometres. At the Paul Scherrer Institute in Switzerland, an international team of researchers including physicists from the Max Planck...
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Sophisticated measurements from experiments indicate the radius is 4% smaller than thought. If true, the finding could have major ramifications for the standard model used in modern physics. Physicists might have to rethink what they know about, well, everything. European researchers dropped a potential bombshell on their colleagues around the world Wednesday by reporting that sophisticated new measurements indicate the radius of the proton is 4% smaller than previously believed. In a world where measurements out to a dozen or more decimal places are routine, a 4% difference in this subatomic particle — found in every atom's nucleus — is...
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Surprise To Physicists -- Protons Aren't Always Shaped Like A Basketball PHILADELPHIA -- When Gerald A. Miller first saw the experimental results from the Thomas Jefferson National Accelerator Facility, he was pretty sure they couldn't be right. If they were, it meant that some long-held notions about the proton, a primary building block of atoms, were wrong. But in time, the findings proved to be right, and led physicists to the conclusion that protons aren't always spherically shaped, like a basketball. "Some physicists thought they did the experiment wrong," said Miller, a University of Washington physics professor. "Even I thought...
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Scientists celebrated at the world's biggest atom smasher at the European Organization for Nuclear Research (CERN) near Geneva on Tuesday as they started colliding particles at record energy levels mimicking conditions close to the Big Bang, opening a new era in the quest for the secrets of the universe. The European Organisation for Nuclear Research (CERN) said it had unleashed the unprecedented bursts of energy on the third attempt, as beams of protons thrust around the 27-kilometre (16.8-mile) accelerator collided at close to the speed of light. "This is physics in the making, the beginning of a new era, we...
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In a cosmic game of pinball, black holes fling high-energy protons into space, where they zigzag around at near light-speeds before smashing into low-energy protons, finds a new study. Then the collisions send bursts of gamma rays flying out from the center of our galaxy, which explains for the first time the mechanism for the high-energy jets first spotted in 2004. This proton-slinging could explain more than this cataclysmic light show deep in our galaxy. The scientists suggest other black holes in the universe could rely on the pinball mechanism to produce enormous jets of light. “Our galaxy's central supermassive...
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And you thought there was a lot of empty space in the solar system. Well, there's even more nothing inside an atom. A hydrogen atom is only about a ten millionth of a millimeter in diameter, but the proton in the middle is a hundred thousand times smaller, and the electron whizzing around the outside is a thousand times smaller than THAT. The rest of the atom is empty. I tried to picture it, and I couldn't. So I put together this page - and I still can't picture it. The page is scaled so that the smallest thing on...
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