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

b. Physics. Of, pertaining to, or designating nuclear isomers; isomeric transition, a radioactive transition from a metastable state to a lower energy state of the same nuclide.

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isomeric1934

1934 Physical Rev. 45 729/1 Another consequence of the introduction of negative protons is the possibility of the existence of isomeric nuclei, that is, nuclei with the same charge and mass but different internal structure.

1937 Physical Rev. 51 1011 The 18 minute, 4·2 hour, and 35 hour activities must all belong to Br⁸⁰ and Br⁸², i.e. one of these isotopes appears to exist in two isomeric forms, from which it decays with different periods.

1950 S. Glasstone Sourcebk. Atomic Energy x. 276/1 Over seventy examples of nuclear isomerism have been discovered, and the phenomenon of decay by isomeric transition, that is, by the spontaneous conversion of one nuclear isomer into another, has been elucidated. In most instances there are isomeric pairs only, but triple isomerism has been observed in a few cases.

1955 R. D. Evans Atomic Nucleus vi. 231 By the usual definition, an isomeric level is one whose half-period is ‘measurably’ long.

1970 P. Marmier & E. Sheldon Physics of Nuclei & Particles II. xv. 1276 Those nuclei whose ground-state configuration is modified by the preferential-filling rule would be expected to display low-lying excited states whose configuration corresponds to that of an unmodified ground state; because of the large spin change occasioned by this effect, the excited state is usually an isomeric state.

单词	isomeric transition
释义	> as lemmas isomeric transition b. Physics. Of, pertaining to, or designating nuclear isomers; isomeric transition, a radioactive transition from a metastable state to a lower energy state of the same nuclide. ΘΚΠ the world > matter > physics > atomic nucleus > radioactive isotope > radioactive nuclide > [adjective] > relating to isomer isomeric1934 1934 Physical Rev. 45 729/1 Another consequence of the introduction of negative protons is the possibility of the existence of isomeric nuclei, that is, nuclei with the same charge and mass but different internal structure. 1937 Physical Rev. 51 1011 The 18 minute, 4·2 hour, and 35 hour activities must all belong to Br⁸⁰ and Br⁸², i.e. one of these isotopes appears to exist in two isomeric forms, from which it decays with different periods. 1950 S. Glasstone Sourcebk. Atomic Energy x. 276/1 Over seventy examples of nuclear isomerism have been discovered, and the phenomenon of decay by isomeric transition, that is, by the spontaneous conversion of one nuclear isomer into another, has been elucidated. In most instances there are isomeric pairs only, but triple isomerism has been observed in a few cases. 1955 R. D. Evans Atomic Nucleus vi. 231 By the usual definition, an isomeric level is one whose half-period is ‘measurably’ long. 1970 P. Marmier & E. Sheldon Physics of Nuclei & Particles II. xv. 1276 Those nuclei whose ground-state configuration is modified by the preferential-filling rule would be expected to display low-lying excited states whose configuration corresponds to that of an unmodified ground state; because of the large spin change occasioned by this effect, the excited state is usually an isomeric state. extracted from isomericadj. < as lemmas
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