FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2070503775> ?p ?o ?g. }

• W2070503775 endingPage "264" @default.
• W2070503775 startingPage "257" @default.
• W2070503775 abstract "Interstellar grains may be composite collections of particles of distinct materials, including voids agglomerated together. We determine the various optical cross sections of such composite grains, given the optical properties of each constituent, using an approximate model of the composite grain. We assume it consists of many concentric spherical layers of the various materials, each with a specified volume fraction. In such a case the usual Mie theory can be generalized and the extinction, scattering, and other cross sections determined exactly. We find that the ordering of the materials in the layering makes some difference to the derived cross sections, but averaging over the various permutations of the order of the materials provides rapid convergence as the number of shells (each of which is filled by all of the materials proportionately to their volume fractions) is increased. Three shells, each with one layer of a particular constituent material, give a very satisfactory estimate of the average cross section produced by larger numbers of shells. We give the formulae for the Rayleigh limit (small size parameter) for multilayered spheres and use it to propose an effective medium theory (EMT), in which an average optical constant is taken to represent the ensemble of materials. Multilayered models are used to compare the accuracies of several EMTs already in the literature. EMTs are worse for predicting scattering cross sections than extinction, and considerably worse for predicting g, the mean cosine of the angle of scattering. However, the angular distribution of the scattered radiation depends sensitively on the assumed grain geometry and should be taken with caution for any grain theory. Our computation is vastly simpler than discrete multipole calculations and may be easily applied for practical modeling of the extinction and scattering properties of interstellar grains." @default.
• W2070503775 created "2016-06-24" @default.
• W2070503775 creator A5015871489 @default.
• W2070503775 creator A5077947407 @default.
• W2070503775 date "1999-11-20" @default.
• W2070503775 modified "2023-10-18" @default.
• W2070503775 title "Calculating Cross Sections of Composite Interstellar Grains" @default.
• W2070503775 cites W1965372241 @default.
• W2070503775 cites W1968714442 @default.
• W2070503775 cites W1971177177 @default.
• W2070503775 cites W1981080393 @default.
• W2070503775 cites W1987146716 @default.
• W2070503775 cites W1994088862 @default.
• W2070503775 cites W2006452023 @default.
• W2070503775 cites W2006869439 @default.
• W2070503775 cites W2013071936 @default.
• W2070503775 cites W2021972561 @default.
• W2070503775 cites W2051569752 @default.
• W2070503775 cites W2053616380 @default.
• W2070503775 cites W2056995274 @default.
• W2070503775 cites W2067451168 @default.
• W2070503775 cites W2075105883 @default.
• W2070503775 cites W2078956786 @default.
• W2070503775 cites W2080906346 @default.
• W2070503775 cites W2084926137 @default.
• W2070503775 cites W2085987397 @default.
• W2070503775 cites W2123924478 @default.
• W2070503775 cites W2135335144 @default.
• W2070503775 cites W3014688560 @default.
• W2070503775 cites W3021322689 @default.
• W2070503775 doi "https://doi.org/10.1086/307997" @default.
• W2070503775 hasPublicationYear "1999" @default.
• W2070503775 type Work @default.
• W2070503775 sameAs 2070503775 @default.
• W2070503775 citedByCount "58" @default.
• W2070503775 countsByYear W20705037752012 @default.
• W2070503775 countsByYear W20705037752013 @default.
• W2070503775 countsByYear W20705037752014 @default.
• W2070503775 countsByYear W20705037752015 @default.
• W2070503775 countsByYear W20705037752017 @default.
• W2070503775 countsByYear W20705037752018 @default.
• W2070503775 countsByYear W20705037752021 @default.
• W2070503775 countsByYear W20705037752022 @default.
• W2070503775 crossrefType "journal-article" @default.
• W2070503775 hasAuthorship W2070503775A5015871489 @default.
• W2070503775 hasAuthorship W2070503775A5077947407 @default.
• W2070503775 hasBestOaLocation W20705037751 @default.
• W2070503775 hasConcept C101991246 @default.
• W2070503775 hasConcept C104779481 @default.
• W2070503775 hasConcept C120456961 @default.
• W2070503775 hasConcept C120665830 @default.
• W2070503775 hasConcept C121332964 @default.
• W2070503775 hasConcept C1276947 @default.
• W2070503775 hasConcept C159985019 @default.
• W2070503775 hasConcept C190841160 @default.
• W2070503775 hasConcept C191486275 @default.
• W2070503775 hasConcept C192562407 @default.
• W2070503775 hasConcept C2524010 @default.
• W2070503775 hasConcept C30475298 @default.
• W2070503775 hasConcept C33923547 @default.
• W2070503775 hasConcept C44870925 @default.
• W2070503775 hasConcept C46244369 @default.
• W2070503775 hasConcept C52234038 @default.
• W2070503775 hasConcept C62520636 @default.
• W2070503775 hasConcept C63688654 @default.
• W2070503775 hasConcept C72422203 @default.
• W2070503775 hasConceptScore W2070503775C101991246 @default.
• W2070503775 hasConceptScore W2070503775C104779481 @default.
• W2070503775 hasConceptScore W2070503775C120456961 @default.
• W2070503775 hasConceptScore W2070503775C120665830 @default.
• W2070503775 hasConceptScore W2070503775C121332964 @default.
• W2070503775 hasConceptScore W2070503775C1276947 @default.
• W2070503775 hasConceptScore W2070503775C159985019 @default.
• W2070503775 hasConceptScore W2070503775C190841160 @default.
• W2070503775 hasConceptScore W2070503775C191486275 @default.
• W2070503775 hasConceptScore W2070503775C192562407 @default.
• W2070503775 hasConceptScore W2070503775C2524010 @default.
• W2070503775 hasConceptScore W2070503775C30475298 @default.
• W2070503775 hasConceptScore W2070503775C33923547 @default.
• W2070503775 hasConceptScore W2070503775C44870925 @default.
• W2070503775 hasConceptScore W2070503775C46244369 @default.
• W2070503775 hasConceptScore W2070503775C52234038 @default.
• W2070503775 hasConceptScore W2070503775C62520636 @default.
• W2070503775 hasConceptScore W2070503775C63688654 @default.
• W2070503775 hasConceptScore W2070503775C72422203 @default.
• W2070503775 hasIssue "1" @default.
• W2070503775 hasLocation W20705037751 @default.
• W2070503775 hasLocation W20705037752 @default.
• W2070503775 hasOpenAccess W2070503775 @default.
• W2070503775 hasPrimaryLocation W20705037751 @default.
• W2070503775 hasRelatedWork W1985830519 @default.
• W2070503775 hasRelatedWork W2007499044 @default.
• W2070503775 hasRelatedWork W2008188005 @default.
• W2070503775 hasRelatedWork W2040852018 @default.
• W2070503775 hasRelatedWork W2047082445 @default.
• W2070503775 hasRelatedWork W2047892871 @default.
• W2070503775 hasRelatedWork W2094163144 @default.
• W2070503775 hasRelatedWork W2108719843 @default.

• next