| 单词 | recombination line |
| 释义 | > as lemmasrecombination line recombination line n. Physics a spectral line corresponding to the energy released when an ion recombines with an electron to form a neutral atom. ΚΠ 1928 Harvard Coll. Observatory Circular No. 335. 20 The forbidden lines N1 and N2 of O III, unlike the recombination lines of H and He, are emitted after excitation to the 1D level. 1975 W. H. Tucker Radiation Proc. in Astrophysics vi. 229 Radio recombination lines have been observed from hydrogen, helium and carbon in the frequency range between 400 and 10,000 MHz. 2007 Jrnl. Physics B 40 4079 The observation of radio recombination lines from atomic levels of increasing principal quantum number n..has provided an incentive to compare measured spectral line widths with predictions in theory. < as lemmas |
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