| 词汇 | example_english_alpha-particle |
| 释义 | Examples of alpha particleThese 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. We keep the subscript 0 upright for the nongyrotropic alphaparticle component. For frequencies less than the alphaparticle gyrofrequency, a negative energy alpha ion-cyclotron mode can interact with a positive energy proton-cyclotron mode. Most of the alphaparticle energy and a few of the neutron energy are deposited in the plasma during inertial time. After the target ignition, energetic charged particles generated by the alphaparticle are expanded in the mirror field. It provides proton, deuteron, alphaparticle and heavy ion beams of various energies to other institutions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When a (positive) alphaparticle approached sufficiently close to the nucleus, it was repelled strongly enough to rebound at high angles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Americium is commonly used in industry as both an alphaparticle and low photon energy gamma radiation source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Light elements absorb more energy of the alphaparticle, while alpha particles are reflected by heavy nuclei nearly with the same energy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The decaying atom of plutonium-239 liberates an alphaparticle and a uranium-235 nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The alphaparticle is trapped in a potential well by the nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One hydrogen nucleus was being knocked off by the impact of the alphaparticle, producing oxygen-17 in the process. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A lot of this waste is alphaparticle-emitting matter from the decay chains of uranium and thorium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Upon inspecting the zinc sulfide screen under a microscope, he noticed separate flashes of light created by individual alphaparticle collisions with the screen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It then undergoes fission producing a gamma ray, an alphaparticle, and a lithium ion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He turned to aluminium, which emitted an alphaparticle and produced sodium, which then decayed into magnesium by beta particle emission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A single proton or neutron or an alphaparticle is effectively knocked out of the nucleus by the incoming gamma ray. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Also, by being bombarded with neutrons, each lithium-6 atom splits into one tritium atom and one alphaparticle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Yet about 12600 times a second, one of the atoms in that gram will decay, giving off an alphaparticle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lunar soil surveys were completed using photographic and alphaparticle backscattering methods. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Upon neutron capture, the compound nucleus emits more easily detectable radiation, for example an alphaparticle, which is then detected. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Neutron absorption produces a tritium ion, an alphaparticle, and kinetic energy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The spherical halos are produced by alphaparticle radiation from the included uranium or thorium bearing species. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The other decays by emitting an alphaparticle with a lifetime of 1.63 s. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This makes it possible to calculate the mass of the nucleus hit by the alphaparticle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They found that atoms could deflect an alphaparticle by as much as 150. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its nucleus is identical to an alphaparticle, and consists of two protons and two neutrons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A miniature chemical analysis lab using an alphaparticle backscatter device was used to determine the lunar surface soil consisted of basaltic rock. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alphaparticle decays can also be detected indirectly by their coincident gamma radiation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Occasionally, an alphaparticle would collide with a nitrogen nucleus and get absorbed by it, knocking out a proton in the process. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Package radioactive decay usually causes a soft error by alphaparticle emission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This high incidence is related to the stability (high binding energy) of the alphaparticle, which makes more energy available to the reaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alpha particles that produce nucleogenic reactions come from natural alphaparticle emitters in uranium and thorium decay chains. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. True single-particle irradiations should allow measurement of the effects of exactly one alphaparticle traversal, relative to multiple traversals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Every alphaparticle that passed through the tube would create a pulse of electricity that could be counted. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Using the same apparatus again, they slowed the alpha particles by placing extra sheets of mica in front of the alphaparticle source. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Uranium decays slowly by emitting an alphaparticle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. B, if it is present in the spacecraft's semiconductors, producing a gamma ray, an alphaparticle, and a lithium ion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The positively charged alphaparticle travels through the semiconductor and disturbs the distribution of electrons there. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Each time an alphaparticle reached the screen it produced a flash. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pu by emission of alphaparticle, but it also absorbs neutrons resulting in a small amount of heavier curium isotopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Polonium is dangerous both as an alphaparticle emitter and because it is chemically toxic. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Each impact of an alphaparticle on the screen produced a tiny flash of light. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Of the 9,837 nasal swabs taken, 335 samples had detectable levels of alphaparticle activity, although none was above acceptable levels. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, uranium-238 usually decays by alpha decay, where the nucleus loses two neutrons and two protons in the form of an alphaparticle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The nuclear reaction that produces nucleogenic nuclides is usually interaction with an alphaparticle or the capture of fission or thermal neutron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Reacting to alphaparticle bombardment, the beryllium atoms emit neutrons in a rate of about 1 neutron each 510 nanoseconds. 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 alphaparticle (helium nucleus). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They used nuclear physics apparatus measuring alphaparticle decay of plutonium to scientifically investigate the interactions between consciousness, matter, and quantum-mechanical processes. 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 alphaparticle, a helium nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He tried lead, without success, and then fluorine in the form of calcium fluoride, which emitted an alphaparticle and produced nitrogen, decaying into oxygen by beta particle emission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As an example of this nongyrotropic abundance, we choose alpha particles. Alpha particles have the shortest range, and to detect these the window should ideally be within 10mm of the radiation source due to alphaparticle attenuation in free air. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In the latter case there exists differential streaming between the ions, as is the case of alpha particles and protons in the solar wind. Neutrons and alpha particles generated by fusion reactions are separated by the magnetic field. Subsequent observations confirmed the presence of hot, super sonic outflows of electrons, protons and alpha particles from the upper limits of the solar corona. In practice, "helion" refers to the stable helium-3 nucleus, in opposition to the other stable nucleus helium-4, which is usually referred to as an alphaparticle. 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 helium nucleus (the alphaparticle). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Cells that are not directly hit by an alphaparticle, but are in the vicinity of one that is hit, also contribute to the genotoxic response of the cell population. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This was their alphaparticle emitter. 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 alphaparticle produced by alpha decay, 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. Ne, respectively, after neutron capture and immediate emission of an alphaparticle. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A simulation of targets of reactor size shows the energy deposition of most of the alpha particles in the target plasma. The output from the thermonuclear reaction is composed of neutron and alpha particles. Since the range of an alphaparticle is typically about the diameter of a single eukaryotic cell, the precise location of the emitting atom in the tissue cells becomes significant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This observation led to the identification of half-life as one of the outcomes of the alpha particle experiments that led to their disintegration theory of radioactivity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Again we consider a model plasma with a stable electron-proton background and a nongyrotropic abundance of alpha particles. He by alphaparticle emissions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fifth was to measure electrons, protons and alpha particles of solar and galactic origin over wide energy ranges. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Uranium-238 is one of the three isotopes of uranium, all of which are sources of alpha particles. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 It can involve neutrons, protons, deuterons, alpha particles, and virtually all nuclear isotopes which can be handled in a laboratory. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Until now, scientists had been bombarding uranium with alpha particles in the hope they would enter the nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Roughly speaking, it states that short-lived isotopes emit more energetic alpha particles than long-lived ones. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It decays with a half-life of 330 days to californium-249, which is a strong emitter of ionizing alpha particles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They deduced this by observing how alpha particles are scattered when they strike a thin metal foil. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alpha particles travel short distances in air, of only 23 cm, and can not penetrate through a dead layer of skin on the human body. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The small size of the nucleus explained the small number of alpha particles that were repelled in this way. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The alpha particles emitted by the decay of the americium collide with the light beryllium nuclei, producing fast neutrons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To their astonishment, a small fraction of the alpha particles experienced heavy deflection. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A conversion screen converts neutron to alpha particles that produce damage tracks in a piece of cellulose. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The neutrons that produce the reactions are mostly produced by secondary spallation reactions from alpha particles, in turn derived from uranium-series decay chains. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Uranium is not absorbed through the skin, and alpha particles released by uranium can not penetrate the skin. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alpha particles could pass through the thin glass wall but were contained within the surrounding glass envelope. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are several different kinds of these particles, but the majority are alpha particles, beta particles, neutrons, and protons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The emission of alpha particles by the radium was responsible. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, the beryllium-8 ground state has almost exactly the energy of two alpha particles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Count rates are normally associated with the measurements of particles, such as alpha particles and beta particles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Negatively charged beta particles or positively charged alpha particles, positrons or fission fragments may be utilized. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They instead observed a small fraction of alpha particles being deflected by angles greater than 90. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The generated alpha particles are blocked by the cladding, thus no further radiation shielding is necessary. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Applications of polonium are few, and include heaters in space probes, antistatic devices, and sources of neutrons and alpha particles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Eveneven nuclei are described as being composed of clusters of alpha particles, as has often been done for light nuclei. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The radiation belts additionally contain lesser amounts of other nuclei, such as alpha particles. 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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