| 单词 | hot atom |
| 释义 | > as lemmashot atom hot atom n. Physics and Chemistry an atom that has a very high kinetic or internal energy, usually as a result of a nuclear process (cf. sense A. 9i). ΘΚΠ the world > matter > physics > atomic nucleus > radioactivity > [noun] > atom with high energy hot atom1946 1946 Sci. News Let. 20 Apr. 247/1 These hot atoms, with energies 10,000 times greater than those involved in ordinary chemical reactions, fly through solutions at enormous speed, due to recoil from such nuclear explosions as the emission of gamma rays. 1950 Sci. Amer. Mar. 44/3 The bizarre chemical effects sometimes produced by radioactive atoms have given rise to a fascinating new branch of investigation known as hot atom chemistry. 1989 Science 24 Nov. 1010/1 In 1981 the study of hot atom collisions was reinvigorated when the first laser experiments were performed with short pulse excimer lasers to produce hot atoms. < as lemmas |
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