| 词汇 | example_english_free-electron |
| 释义 | free electroncollocation in Englishmeanings of freeand electronThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with electron. free adjective adverb uk /friː/ us /friː/ not limited ... See more at free electron noun[C] uk /iˈlek.trɒn/ us /iˈlek.trɑːn/ an extremely small piece of matter with a negative ... See more at electron Examples of free electronThese 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. If the freeelectron remains free after the collision, we speak of a free-free collision. The freeelectron density was calculated multiplying the atomic density of the element for its electron valence. Both in metals and in plasma the ionization of a bound electron state can occur either by a freeelectron impact or by photon absorption. That is, a freeelectron accepts a photon of the laser beam. The latter can be estimated to be small compared to the freeelectron current. However, there are also effects where the rapidly changing freeelectron density due to field ionization plays the major role. We have taken for the freeelectron density ne 1⁄4 1022 cm23. The freeelectron comes from the 2 x side. The nearly freeelectron model characterizes the electrical proper ties of the target. The most obvious recombination process is the direct molecular recombination between a positive ion and a freeelectron. Consequently, the lossless nearly freeelectron model provides meaningless information at the lower frequencies. Collisional losses dominate the effects due to the nearly freeelectron model as the frequency is decreased below a critical frequency. 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 free Go to the definition of electron See other collocations with electron |
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