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General spectroscopic theory has been applied to the Paschen-Back effect and simplified methods developed for determining the positions of the energy levels and intensities of lines for cases of intermediate coupling. They are expressed in terms of LS -coupling as the zero-order functions.
The charge distribution, the electromagnetic field and the self-energy of an electron are investigated. It is found that, as a result of Dirac's positron theory, the charge and the magnetic dipole of the electron are extended over a finite region; the contributions of the spin and of the...
The number of alpha-particles released in the disintegration of boron by neutrons in the atmosphere was measured in an ionization chamber filled with boron trifluoride. Assuming a cross section for the n - α reaction of 3× 10 - 21 cm 2 , the flux of neutrons of thermal energy was found to be...
The half-life of the natural radioactivity of lutecium reported by Heyden and Wefelmeier is 2.9±0.5 × 10 12 years for the element or 7.3±2× 10 10 years for Lu 176 , which probably is the active isotope. Negative electrons are emitted. The upper energy limit of the spectrum is 215,000±15,000...
The methods developed in the previous paper have been applied to the spectrum of neon. The transformation coefficients in this spectrum can be easily determined since parameters have been calculated for several of its configurations. When applied to several lines of the p 5 p - p 5 s and p 5 p -...
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