| 词汇 | antiproton |
| 释义 | antiproton noun[ C ] uk /ˈæn.tiˌprəʊ.tɒn/ us /ˈæn.t̬iˌproʊ.t̬ɑːn/ the antiparticle of a proton反质子 Physics: atoms, molecules & sub-atomic particles acceptor alpha particle anti-radical antilepton antimatter antineutrino beta decay beta particle Higgs boson interatomic interelectronic interionic intermolecular monatomic multi-molecular multiparticle muon neutrino positron relative atomic mass antiproton | American Dictionaryantiproton noun[ C ] us/ˌænt·i·ˈproʊ·tɑn, ˌæn·tɑɪ-/ physics the antiparticle of a proton Examples of antiprotonantiproton Even with the improved antiproton production and storage capacities expected soon, this amount of antimatter is beyond our reach. Again assuming a three-order of magnitude improvement in antiproton production efficiency, these gains are near break even in terms of net energy flow. Antielectrons or positrons are difficult to store in this way, so antiprotons are stored instead. For a hypothetical plasma composed of antiprotons and positrons, a potential dip would occur. Currently, antiprotons can only be stored for a few weeks and production is very low, but the problems with the storage and production are engineering problems, not physical problems. Iridium is used in particle physics for the production of antiprotons, a form of antimatter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, an antiproton and a positron can form an antihydrogen atom, which has almost exactly the same properties as a hydrogen atom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Whereas the common hydrogen atom is composed of an electron and proton, the antihydrogen atom is made up of a positron and antiproton. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Several methods for the liquid-propellant thermal antimatter engine using the gamma rays produced by antiproton or positron annihilation have been proposed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, the charges of the proton and antiproton must sum to exactly zero. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The divergence indicates that at a low temperature hydrogen-antihydrogen will not be produced, rather proton/antiproton and electron/antielectron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Protons consist of two up quarks and one down quark, while antiprotons consist of two anti-ups and an anti-down. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As a result, scientists had to develop a number of techniques for creating and handling intense beams of antiprotons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is inconsistent with predictions from most models of dark matter sources, in which the positron and antiproton excesses are correlated. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since then, several groups have studied antimatter-catalyzed micro fission/fusion engines in the lab (sometimes "antiproton" as opposed to "antimatter" or "antihydrogen"). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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