| 词汇 | example_english_helium-nucleus |
| 释义 | helium nucleuscollocation in Englishmeanings of heliumand nucleusThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with nucleus. helium noun[U] uk /ˈhiː.li.əm/ us /ˈhiː.li.əm/ a chemical element that is a gas lighter than air, that will not burn and is used in balloons, airships, and some types ... See more at helium nucleus noun[C] uk /ˈnjuː.kli.əs/ us /ˈnuː.kli.əs/ physicsspecialized the central part of an atom, usually made up of protons ... See more at nucleus Examples of helium nucleusThese 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. Unstable nuclei may undergo alpha decay, in which they emit an energetic heliumnucleus, or beta decay, in which they eject an electron (or positron). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alpha can be stopped quite easily by a few centimetres in air or a piece of paper and is equivalent to a heliumnucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alpha decay, the release of a high-energy heliumnucleus, is the most common form of radioactive decay for plutonium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Before the iron decays, it can fuse with another heliumnucleus, creating unstable nickel-56. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Before the chromium decays, it can fuse with another heliumnucleus, creating unstable iron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In alpha decay the radioactive element decays by emitting a heliumnucleus (2 protons and 2 neutrons), giving another element, plus helium-4. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Before the titanium decays, it can fuse with another heliumnucleus, creating unstable chromium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alpha decay occurs when the nucleus ejects an alpha particle (heliumnucleus). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It may also be an atomic nucleus devoid of electrons, such as an alpha particle, a heliumnucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One stable nucleus of calcium fuses with one heliumnucleus, creating unstable titanium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A heliumnucleus was presumed to be composed of four protons plus two nuclear electrons (electrons bound inside the nucleus) to cancel two of the charges. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A diproton is not stable, so neutrons must also be involved, ideally in such a way that a helium nucleus, with its extremely tight binding, is one of the products. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The antiproton's orbit, which has a large principal quantum number and angular momentum quantum number of around 38, lies far away from the surface of the heliumnucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alpha process elements (or alpha elements) are so-called since their most abundant isotopes are integer multiples of four, the mass of the heliumnucleus (the alpha particle). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In short: when four protons fuse to become one heliumnucleus, two of them have to convert into neutrons, and each such conversion releases one electron neutrino. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Cosmic galaxy radiation possesses the important constituent of 12 % alpha particles (helium nuclei), 1.3% heavy ions, and 1% electrons. The splitting of the lithium nuclei produced helium nuclei. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Instead, the interiors of stars in the horizontal branch transform three helium nuclei into carbon by means of this triple-alpha process. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In stars, rapid nucleosynthesis proceeds by adding helium nuclei (alpha particles) to heavier nuclei. 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. Want to learn more? Go to the definition of helium Go to the definition of nucleus See other collocations with nucleus |
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