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

a. In Physics L is used to designate the series of X-ray emission lines of longer wavelength than the K-series obtained by exciting the atoms of any particular element (cf. K n. 3e); these arise from electron transitions to the atomic orbit of second-lowest energy, with principal quantum number 2, which is thus termed the L-shell, and electrons in this shell L-electrons. L-capture n. the capture by an atomic nucleus of one of the L-electrons.

ΚΠ

1911 C. G. Barkla in London, Edinb. & Dublin Philos. Mag. 6th Ser. 22 406 It is seen that the radiations fall into two distinct series, here denoted by the letters K and L. [Note] Previously denoted by letters B and A... The letters K and L are, however, preferable, as it is highly probable that series of radiations both more absorbable and more penetrating exist.

1923 E. N. da C. Andrade Struct. Atom vi. 100 Moseley identified in the K series the two lines which he called α and β... In the L series he identified five lines.

1930 L. Pauling & S. Goudsmit Struct. Line Spectra x. 172 There are three absorption edges corresponding to the removal of an electron from the L shell.

1930 London, Edinb. & Dublin Philos. Mag. 7th Ser. 9 205 The K electron distribution in carbon will be determined mainly by the central nucleus, and the influence of the L electrons will be comparatively small.

1934 H. E. White Introd. Atomic Spectra xvi. 326 When a K electron is missing,..the binding energy of the L electron is approximately that for the corresponding electron in the element with the next higher atomic number.

1956 Nucl. Sci. Abstr. 10 1123/2 (heading) Effect of the correlations existing between the electron positions on the ratio ρ of the probability of L capture to that of K capture.

1968 Physical Rev. 165 945/1 The exchange correction..in the case of Be⁷ increases the L-capture probability by a factor of almost 4.

1970 E. P. Bertin Princ. & Pract. X-ray Spectrometr. Anal. vi. 182 Elements having atomic number 57 (lanthanum) or higher..are usually determined by measurement of their L lines with gas-flow proportional counters.

1972 R. Bolton Org. Mechanisms i. 14 The K-shell is now filled... A third electron must..be placed in the higher-energy L-shell.

单词	l-shell
释义	> as lemmas L-shell a. In Physics L is used to designate the series of X-ray emission lines of longer wavelength than the K-series obtained by exciting the atoms of any particular element (cf. K n. 3e); these arise from electron transitions to the atomic orbit of second-lowest energy, with principal quantum number 2, which is thus termed the L-shell, and electrons in this shell L-electrons. L-capture n. the capture by an atomic nucleus of one of the L-electrons. ΚΠ 1911 C. G. Barkla in London, Edinb. & Dublin Philos. Mag. 6th Ser. 22 406 It is seen that the radiations fall into two distinct series, here denoted by the letters K and L. [Note] Previously denoted by letters B and A... The letters K and L are, however, preferable, as it is highly probable that series of radiations both more absorbable and more penetrating exist. 1923 E. N. da C. Andrade Struct. Atom vi. 100 Moseley identified in the K series the two lines which he called α and β... In the L series he identified five lines. 1930 L. Pauling & S. Goudsmit Struct. Line Spectra x. 172 There are three absorption edges corresponding to the removal of an electron from the L shell. 1930 London, Edinb. & Dublin Philos. Mag. 7th Ser. 9 205 The K electron distribution in carbon will be determined mainly by the central nucleus, and the influence of the L electrons will be comparatively small. 1934 H. E. White Introd. Atomic Spectra xvi. 326 When a K electron is missing,..the binding energy of the L electron is approximately that for the corresponding electron in the element with the next higher atomic number. 1956 Nucl. Sci. Abstr. 10 1123/2 (heading) Effect of the correlations existing between the electron positions on the ratio ρ of the probability of L capture to that of K capture. 1968 Physical Rev. 165 945/1 The exchange correction..in the case of Be⁷ increases the L-capture probability by a factor of almost 4. 1970 E. P. Bertin Princ. & Pract. X-ray Spectrometr. Anal. vi. 182 Elements having atomic number 57 (lanthanum) or higher..are usually determined by measurement of their L lines with gas-flow proportional counters. 1972 R. Bolton Org. Mechanisms i. 14 The K-shell is now filled... A third electron must..be placed in the higher-energy L-shell. extracted from Ln. < as lemmas
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> as lemmas