| 单词 | alpha ray |
| 释义 | > as lemmasalpha ray alpha ray n. a ray or single particle of alpha radiation; (attributive or in plural) alpha radiation. ΘΚΠ the world > matter > physics > atomic nucleus > radioactivity > alpha radiation > [noun] > ray of alpha ray1902 1902 E. Rutherford & A. G. Grier in London, Edinb. & Dublin Philos. Mag. 6th Ser. 4 325 For brevity and convenience we will call the non-deviable rays of all radioactive substances α rays and the deviable rays β rays. 1912 Current Lit. Dec. 668/1 In the spinthariscope..we actually see the flash of light caused by the impact of a single alpha ray—which is a charged molecule of helium—upon a screen of zinc blend. 1942 J. D. Stranathan ‘Particles’ of Mod. Physics viii. 344 The previously supposed homogeneous α-rays emitted from ThC actually fall into five distinct groups. 1989 R. Pflaum Grand Obsession xiv. 238 She studied the target through a microscope, concentrating on the scintillations that resulted every time the alpha rays collided with the atoms of the screen. 2010 C. Bouboulis Featherman xi. 148 When he released the handle, the alpha ray jet stopped. < as lemmas |
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