Matches in SemOpenAlex for { <https://semopenalex.org/work/W2169382481> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W2169382481 endingPage "1598" @default.
- W2169382481 startingPage "1586" @default.
- W2169382481 abstract "Asymptotic transient field solutions of the form A(r,t) exp [iS (r, t)], where S is a rapidly and A a slowly varying function of space and time, may be analyzed in terms of wave packets with central frequency ω =-∂S/∂t and central wavenumber k = ∇S. When the (dispersive) medium is lossless, stationary, and homogeneous, wave packets with constant real ω and k move along straightline trajectories called space-time rays. In the presence of dissipation and (or) when the input signal has an exponential amplitude dependence, S is complex. The corresponding wave packets with constant complex ω and k move along complex space-time rays, i.e., along trajectories defined in a complex (r, t) coordinate space. The properties of complex space-time rays and of the fields propagating along them, and their relation to physical fields observed on real (r, t) coordinates, are illustrated for a plane pulse with Gaussian envelope and frequency swept carrier, launched into a lossy environment. Tracking of spatial and temporal maxima is performed by ray techniques, and a paraxial ray regime is defined that permits discussion of a signal velocity. Special attention is given to ray focusing and the associated phenomena of pulse compression. It is shown how a complex input frequency profile can be synthesized so as to achieve optimum compression at a real space-time observation point in a lossy medium. The general results are applied in detail to a cold dissipative plasma, and a representative set of numerical calculations is included." @default.
- W2169382481 created "2016-06-24" @default.
- W2169382481 creator A5016441496 @default.
- W2169382481 creator A5061112479 @default.
- W2169382481 date "1974-01-01" @default.
- W2169382481 modified "2023-10-14" @default.
- W2169382481 title "Complex space-time rays and their application to pulse propagation in lossy dispersive media" @default.
- W2169382481 cites W2013527172 @default.
- W2169382481 cites W2041363811 @default.
- W2169382481 cites W2100596337 @default.
- W2169382481 cites W2143732390 @default.
- W2169382481 cites W2152056627 @default.
- W2169382481 doi "https://doi.org/10.1109/proc.1974.9666" @default.
- W2169382481 hasPublicationYear "1974" @default.
- W2169382481 type Work @default.
- W2169382481 sameAs 2169382481 @default.
- W2169382481 citedByCount "49" @default.
- W2169382481 countsByYear W21693824812012 @default.
- W2169382481 countsByYear W21693824812014 @default.
- W2169382481 countsByYear W21693824812019 @default.
- W2169382481 countsByYear W21693824812022 @default.
- W2169382481 crossrefType "journal-article" @default.
- W2169382481 hasAuthorship W2169382481A5016441496 @default.
- W2169382481 hasAuthorship W2169382481A5061112479 @default.
- W2169382481 hasConcept C105795698 @default.
- W2169382481 hasConcept C106978608 @default.
- W2169382481 hasConcept C120665830 @default.
- W2169382481 hasConcept C121332964 @default.
- W2169382481 hasConcept C134306372 @default.
- W2169382481 hasConcept C165021410 @default.
- W2169382481 hasConcept C168834538 @default.
- W2169382481 hasConcept C180205008 @default.
- W2169382481 hasConcept C30475298 @default.
- W2169382481 hasConcept C33923547 @default.
- W2169382481 hasConcept C56034020 @default.
- W2169382481 hasConcept C62520636 @default.
- W2169382481 hasConceptScore W2169382481C105795698 @default.
- W2169382481 hasConceptScore W2169382481C106978608 @default.
- W2169382481 hasConceptScore W2169382481C120665830 @default.
- W2169382481 hasConceptScore W2169382481C121332964 @default.
- W2169382481 hasConceptScore W2169382481C134306372 @default.
- W2169382481 hasConceptScore W2169382481C165021410 @default.
- W2169382481 hasConceptScore W2169382481C168834538 @default.
- W2169382481 hasConceptScore W2169382481C180205008 @default.
- W2169382481 hasConceptScore W2169382481C30475298 @default.
- W2169382481 hasConceptScore W2169382481C33923547 @default.
- W2169382481 hasConceptScore W2169382481C56034020 @default.
- W2169382481 hasConceptScore W2169382481C62520636 @default.
- W2169382481 hasIssue "11" @default.
- W2169382481 hasLocation W21693824811 @default.
- W2169382481 hasOpenAccess W2169382481 @default.
- W2169382481 hasPrimaryLocation W21693824811 @default.
- W2169382481 hasRelatedWork W1884864141 @default.
- W2169382481 hasRelatedWork W1983290920 @default.
- W2169382481 hasRelatedWork W2001954398 @default.
- W2169382481 hasRelatedWork W2003123017 @default.
- W2169382481 hasRelatedWork W2016673219 @default.
- W2169382481 hasRelatedWork W2064990330 @default.
- W2169382481 hasRelatedWork W2065958818 @default.
- W2169382481 hasRelatedWork W2111830442 @default.
- W2169382481 hasRelatedWork W2160293638 @default.
- W2169382481 hasRelatedWork W2519558435 @default.
- W2169382481 hasVolume "62" @default.
- W2169382481 isParatext "false" @default.
- W2169382481 isRetracted "false" @default.
- W2169382481 magId "2169382481" @default.
- W2169382481 workType "article" @default.