منابع مشابه
Electric-dipole, electric-quadrupole, magnetic-dipole, and magnetic-quadrupole transitions in the neon isoelectronic sequence
Excitation energies for 2l23l8 hole-particle states of Ne-like ions are determined to second order in relativistic many-body perturbation theory ~MBPT!. Reduced matrix elements, line strengths, and transition rates are calculated for electric-dipole (E1), magnetic-quadrupole (E2), magnetic-dipole (M1), and magneticquadrupole (M2) transitions in Ne-like ions with nuclear charges ranging from Z51...
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Three-dimensional excitation vortices exist in systems such as chemical reactions and the human heart. Their one-dimensional rotation backbone can pin to unexcitable heterogeneities, which greatly affect the structure, dynamics, and lifetime of the vortex. In experiments with the Belousov-Zhabotinsky reaction, we demonstrate vortex unpinning from a pair of inert and impermeable spheres using ex...
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The electric field parallel to the magnetic field, E∥, in nonlinear magnetosonic waves is analytically studied. The theory shows that E∥ can be strong. Then, with use of one-dimensional, fully kinetic, relativistic, electromagnetic, particle simulations and with test particle calculations, the effect of E∥ on particle acceleration in shock waves is examined for three different mechanisms: inces...
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In this deliverable, we report on several evaluation experiments which aim to demonstrate the synergies arising from a combination of ontology design patterns and ontology learning techniques. Furthermore, we present a novel method for ontology refinement, i.e. the semi-automatic acquisition of complex domain-range restrictions, and its evaluation on the well-known SWRC ontology. A variant of t...
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ژورنال
عنوان ژورنال: Science
سال: 1909
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.30.772.525-a