| 词汇 | example_english_alpha-decay |
| 释义 | Examples of alpha decayThese 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. The first decay processes to be discovered were alphadecay, beta decay, and gamma decay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The half-life of this alphadecay was first measured as 150 days and then corrected to 162.8 days. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sg which decays through alphadecay and spontaneous fission, with a half-life of around 2.4 minutes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sm primarily decay by alphadecay to isotopes of neodymium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Cleveite was the first known terrestrial source of helium, which is created over time by alpha decay of the uranium and accumulates trapped (occluded) within the mineral. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sg which also decays through alphadecay and spontaneous fission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sg which decays through alphadecay and spontaneous fission, with a half-life of around 2.1 minutes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Seaborg first reported alphadecay proportionate to only a fraction of the element 93 under observation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Bi undergoes alphadecay with a half-life of approximately 600 yottaseconds (1.9 years), over a billion times longer than the current estimated age of the universe. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Due to the alphadecay of thorium and uranium, monazite contains a significant amount of helium, which can be extracted by heating. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Mendelevium-256, the chemically most important isotope of mendelevium, decays through electron capture 90.7% of the time and alphadecay 9.9% of the time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most of these decay predominantly through alphadecay, but some undergo spontaneous fission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A half-life of 0.89 ms was calculated: decays into by alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alphadecay typically occurs in the heaviest nuclides. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lighter astatine isotopes have quite high energies of alphadecay, which become lower as the nuclei become heavier. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This activity was also observed from the alphadecay of flerovium-287. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In 1983, they repeated the experiment using a new technique: measurement of alphadecay from a decay product that had been separated out chemically. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Theoretical estimates of alphadecay half-lives of isotopes of ununtrium are in good agreement with the experimental data. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Unstable nuclei may undergo alphadecay, in which they emit an energetic helium nucleus, 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. Unlike beta decay, alphadecay is governed by the interplay between the nuclear force and the electromagnetic force. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alphadecay, the release of a high-energy helium nucleus, 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. After observing the five alphadecay events that generate dubnium-268, spontaneous fission events were observed with a long half-time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Astatine's alphadecay energies follow the same trend as for other heavy elements. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These decays have been linked to an isomeric level decaying by alphadecay with a half-life of 19 s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alphadecay is predicted for all seven naturally occurring isotopes, but due to very long half-lives, it has been observed only for. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Radioisotopes undergoing alphadecay are a concern due to their tendency to cause soft errors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Bismuth has the longest known alphadecay half-life, although tellurium-128 has a double beta decay half-life of over. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. B which decays through proton emission and alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Te being seen to undergo this mode of decay; some lighter elements have isotopes with alphadecay as a rare branch. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The daughter nuclide of an alphadecay is an isodiapher of the original nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Here, to the left, we now have an alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Isotopes of unbinilium are predicted to have alphadecay half-lives of the order of microseconds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most platinum isotopes decay by some combination of beta decay and alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The process of alphadecay is in essence a special type of spontaneous nuclear fission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In alphadecay the radioactive element decays by emitting a helium nucleus (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. Heavy nuclei such as uranium and thorium may also undergo spontaneous fission, but they are much more likely to undergo decay by alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are generally produced in the process of alphadecay, but may also be produced in other ways. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Fl can be synthesized by the alphadecay of a massive nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In nature, virtually all thorium is found as thorium-232, which undergoes alphadecay with a half-life of about 14.05 billion years. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Theoretical calculation in a quantum tunneling model reproduces the experimental alphadecay half-life data for the known darmstadtium isotopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Small amounts of helium are also present in uraninite as a result of alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has also been found that alphadecay of copernicium-283 leads to different excited states of darmstadtium-279. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Radon is formed in the lithosphere as from the alphadecay of radium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, uranium-238 usually decays by alphadecay, where the nucleus loses two neutrons and two protons in the form of an alpha particle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Unstable isotopes decay through various radioactive decay pathways, most commonly alphadecay, beta decay, or electron capture. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Te because the reaction path runs into a region of nuclides which decay preferably by alphadecay and thus loop the path back onto itself. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alphadecay occurs when the nucleus ejects an alpha particle (helium nucleus). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The elements heavier than that have to shed weight to achieve stability, most usually as alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Perey then attempted to determine the proportion of beta decay to alphadecay in actinium-227. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This transformation may be accomplished in a number of different ways, including alphadecay (emission of alpha particles) and beta decay (electron emission, positron emission, or electron capture). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Californium-252 undergoes alphadecay (the loss of two protons and two neutrons) 96.9% of the time to form curium-248 while the remaining 3.1% of decays are spontaneous fission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In theory, though, all isotopes with an atomic number greater than 40 are supposed to be unstable to such decay modes as spontaneous fission and alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The daughter nucleus is very unstable, decaying with a lifetime of 14 milliseconds into, which may experience either spontaneous fission or alphadecay into, which will undergo spontaneous fission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An extensive study of alphadecay of superheavy nuclei was performed during the last decade, as a consequence of identifying new elements of the island of stability. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lv on the basis of a missed parental alphadecay. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pt can undergo alphadecay, but its decay had never been observed (the half-life is known to be longer than 3.2 years), therefore it is considered stable. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some of the earliest nuclear reactions studied involved an alpha particle produced by alphadecay, knocking a nucleon from a target nucleus. (d, n) and (d, p) reactions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Meitnerium currently has seven known isotopes; all of them undergo alpha decays to become bohrium nuclei, with mass numbers between 262 and 274. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This time, two atoms of element 114 were produced; they alpha decayed with a half-life of 2.6 s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The other alpha decays with a lifetime of 1.63 s; the decay energy was not measured. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Roentgenium currently has seven known isotopes; all but one of them undergo alpha decays to become meitnerium nuclei, with mass numbers between 268 and 278. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This time two atoms of flerovium were produced, alpha decaying with a half-life of 5.5 s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Uranium-236 alpha decays with a half-life of 23.420 million years to thorium-232. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Flerovium currently has five known isotopes, all of which have been shown to undergo alpha decays to become copernicium nuclei, with mass numbers between 281 and 285. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. That is, electrons were ejected from the atom with a range of energies, rather than the discrete amounts of energies that were observed in gamma and alpha decays. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Copernicium currently has six known isotopes, four of which have been shown to undergo alpha decays to become darmstadtium nuclei, with mass numbers between 273 and 281. 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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