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Electronic gJ Factors, Natural Lifetimes, and Electric Quadrupole Interaction for Rb 87 in the np ^(2)P_(3/2) Series of the Rb I Spectrum

For Rb 87 the level crossing method was applied to the first four levels ( n = 5, 6, 7, and 8) of the np 2 P 3/2 series in the Rb I spectrum. By using magnetic dipole interaction constants from corresponding zero field optical double resonance experiments, the electronic g J factors of 5, 6, and 7 p 2 P 3/2 were calculated from the level crossing data. For these levels the natural radiative lifeti

Level Crossing Investigation of the Hyperfine Structure of Bi209 in the 6p^(2)(^(3)P_(0)) 6d^(2)D_(3/2) and 6p^(2)(^(3)P_(1)) 7s^(4)P_(3/2) Levels of the Bi I Spectrum

The level crossing method was used to measure the hyperfine structure of Bi 209 in the 6 p 2 ( 3 P 0 )6 d 2 D 3/2 and 6 p 2 ( 3 P 1 )7 s 4 P 3/2 levels of the Bi I spectrum. For the magnetic dipole and the electric quadrupole interaction constants a and b the following values were obtained: | a (6 p 2 ( 3 P 0 ) 6 d 2 D 3/2 )| = 128.0(0.6) g J /-0.79 MHz | b (6 p 2 ( 3 P 0 ) 6 d 2 D 3/2 )| = 58(4)

Frequency Selective Structures with Stochastic Deviations

This paper deals with the performance of frequency selective structures with defects. A frequency selective structure is in this case a periodic pattern of apertures in a conducting plate. The plate can be of arbitrary thickness. The defects can be by deviations in the placing of the apertures, in the material parameters, or in the shape of the apertures. First the perturbation to the far- field pa