The presence of two metastable states in the negative beryllium ion, 2s2p 2 4 P and 2p 3 4 S, which are connected by an optical transition, offers a unique possibility for gaining new information about this ion. Utilizing resonant, two-photon detachment, combined with resonant-ionization detection of the resulting neutral atoms, we have obtained results yielding the lifetimes of the 4 P 1/2 (0.73 ± 0.08 µs) and 4 P 5/2 (0.33 ± 0.06 µs) levels, the fine-structure splittings of the 4 P J levels, and an improved 4 P-4 S transition wavelength. † Permanent address: Institute of Spectroscopy, Russian Academy of Sciences, 142092 Troitsk, Moscow Region, Russia.

Methods of constructing vector fields of natural objects’ movements based on a series of consecutive satellite images are considered: cloud formations in the atmosphere based on a series of consecutive images obtained from geostationary satellites; water masses and ice fields based on a series of images from low-orbit satellites; using the example of the evolution of bipolar spots, the trajectories of trial corks in the Solar photosphere are constructed based on the data of sounders installed on heliophysical satellite observatories.

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