英语词汇“alpha-emitting”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

5. Physics. An alpha particle. Frequently attributive, as alpha decay, alpha emission, alpha emitter; alpha-emitting adj. Cf. earlier alpha radiation n., alpha ray n. at Compounds 2b.

ΚΠ

1931 Science 13 Nov. 492/1 In beta decay the nucleus not only loses an electron, but also the valence shell gains an electron, while in alpha decay, both nucleus and valence shell lose a pair of electrons each.

1937 Physical Rev. 51 818/2 Possible evidence for the existence of a new alpha-emitting isotope of uranium.

1948 H. L. Anderson Neutrons from Alpha Emitters 13 They give 4.6 neutrons per 10⁶ alphas of energy 9 Mev on a thick boron target.

1962 Newnes Conc. Encycl. Nucl. Energy 25/1 Spontaneous α-emission takes place with many of the nuclei heavier than lead.

1978 G. C. Hill & J. S. Holman Chem. in Context vi. 67 Alpha-decay is common to most of the radioactive isotopes of elements with atomic number greater than 82 (lead).

1989 C. Caufield Multiple Exposures (1990) vi. 52 Plutonium can only be detected by its alpha activity, and there were very few alpha monitors in existence in 1944.

2002 F. Close et al. Particle Odyssey ii. 28 (caption) The majority of alphas from a source of thorium C′ (polonium-212) travel 8.6 cm in a cloud chamber.

2006 N.Y. Times 19 Dec. (Washington Final ed.) a31/2 Dirty bombs based on gamma emitters, analysts have learned, can't kill very many people... ‘Smoky bombs’ based on alpha emitters very well could.

单词	alpha-emitting
释义	> as lemmas alpha-emitting 5. Physics. An alpha particle. Frequently attributive, as alpha decay, alpha emission, alpha emitter; alpha-emitting adj. Cf. earlier alpha radiation n., alpha ray n. at Compounds 2b. ΚΠ 1931 Science 13 Nov. 492/1 In beta decay the nucleus not only loses an electron, but also the valence shell gains an electron, while in alpha decay, both nucleus and valence shell lose a pair of electrons each. 1937 Physical Rev. 51 818/2 Possible evidence for the existence of a new alpha-emitting isotope of uranium. 1948 H. L. Anderson Neutrons from Alpha Emitters 13 They give 4.6 neutrons per 10⁶ alphas of energy 9 Mev on a thick boron target. 1962 Newnes Conc. Encycl. Nucl. Energy 25/1 Spontaneous α-emission takes place with many of the nuclei heavier than lead. 1978 G. C. Hill & J. S. Holman Chem. in Context vi. 67 Alpha-decay is common to most of the radioactive isotopes of elements with atomic number greater than 82 (lead). 1989 C. Caufield Multiple Exposures (1990) vi. 52 Plutonium can only be detected by its alpha activity, and there were very few alpha monitors in existence in 1944. 2002 F. Close et al. Particle Odyssey ii. 28 (caption) The majority of alphas from a source of thorium C′ (polonium-212) travel 8.6 cm in a cloud chamber. 2006 N.Y. Times 19 Dec. (Washington Final ed.) a31/2 Dirty bombs based on gamma emitters, analysts have learned, can't kill very many people... ‘Smoky bombs’ based on alpha emitters very well could. extracted from alphan.adj. < as lemmas
随便看	ricture rictus rictus grin rictus smile rictuses rid rid ground rid house rid marches rid out of the way rid space rid the marches rid the way rid way rid-up rid-work ridable riddable riddance riddances ridded riddel riddel post ridden ridden out

> as lemmas