AMASS
发表于 2025-3-21 18:27:14
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Pantry
发表于 2025-3-21 22:29:00
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时代
发表于 2025-3-22 01:07:59
A Short History of the Subject,visible light of wavelength 500 nm or 5000 Å (Angstrom) this is 3 × 10. Hz in 6 × 10. Hz, or in terms of wavelength, a typical shift is 2.5 pm or 0.025 Å. Such small shifts could not be observed before the advent of interferometric methods into spectroscopy. The first person to use such a method was
PHAG
发表于 2025-3-22 05:51:47
Introduction to the Theory of Mass Shifts in Optical Spectra,. interacting with a point nucleus of mass . via their mutual electrostatic attraction. In classical mechanics the two particles can be treated as one particle with a reduced mass ./(. + .) interacting with an infinitely massive particle at rest.
扫兴
发表于 2025-3-22 11:38:21
Introduction to the Theory of Field Shifts in Optical Spectra,not be studied, but the nuclear charge distribution can. The nuclear charge distribution can also be studied by scattering electrons off nuclei elastically. Since the first scattering experiments of Lyman .. (1951) the size of the charge distribution of many nuclei have been found. It has been found
Keratin
发表于 2025-3-22 16:37:12
Isotope Shifts in X-Ray Spectra,ompared with optical transitions, the interpretation of shifts in x-ray transitions is simpler but unfortunately their measurement with precision is not. In practice, the only x-ray transitions in which shifts can be usefully measured are the . lines, and the one invariably studied is the .α. line (
Sinus-Node
发表于 2025-3-22 20:40:56
Related Techniques for the Determination of Nuclear Structure,gives information about nuclear charge distributions. Isotope shifts can, in principle, give values of the change between isotopes in the mean square radius of the nuclear charge distribution, .〈..〉, but sometimes in practice they give only relative values between different isotope pairs. In such ca
Projection
发表于 2025-3-23 00:46:09
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ANTH
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卷发
发表于 2025-3-23 05:45:37
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