{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363388843808075136.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1063/1.4766895"}},{"identifier":{"@type":"URI","@value":"https://pubs.aip.org/aip/pop/article-pdf/doi/10.1063/1.4766895/15945972/112108_1_online.pdf"}}],"dc:title":[{"@value":"Phase space structure of the electron diffusion region in reconnection with weak guide fields"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Kinetic simulations of magnetic reconnection provide detailed information about the electric and magnetic structure throughout the simulation domain, as well as high resolution profiles of the essential fluid parameters including the electron and ion densities, flows, and pressure tensors. However, the electron distribution function, f(v), within the electron diffusion region becomes highly structured in the three dimensional velocity space and is not well resolved by the data available from the particle-in-cell (PIC) simulations. Here, we reconstruct the electron distribution function within the diffusion region at enhanced resolution. This is achieved by tracing electron orbits in the fields taken from PIC simulations back to the inflow region where an analytic form of the magnetized electron distribution is known. For antiparallel reconnection, the analysis reveals the highly structured nature of f(v), with striations corresponding to the number of times electrons have been reflected within the reconnection current layer, and exposes the origin of gradients in the electron pressure tensor important for momentum balance. The structure of the reconnection region is strongly tied to the pressure anisotropy that develops in the electrons upstream of the reconnection region. The addition of a guide field changes the nature of the electron distributions, and the differences are accounted for by studying the motion of single particles in the field geometry. Finally, the geometry of small guide field reconnection is shown to be highly sensitive to the ion/electron mass ratio applied in the simulation.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004236852866178","@type":"Researcher","foaf:name":[{"@value":"J. Ng"}],"jpcoar:affiliationName":[{"@value":"Massachusetts Institute of Technology 1 Department of Physics, and Plasma Science and Fusion Center, , Cambridge, Massachusetts 02139, USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843808075139","@type":"Researcher","foaf:name":[{"@value":"J. Egedal"}],"jpcoar:affiliationName":[{"@value":"Massachusetts Institute of Technology 1 Department of Physics, and Plasma Science and Fusion Center, , Cambridge, Massachusetts 02139, USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843808075137","@type":"Researcher","foaf:name":[{"@value":"A. Le"}],"jpcoar:affiliationName":[{"@value":"Massachusetts Institute of Technology 1 Department of Physics, and Plasma Science and Fusion Center, , Cambridge, Massachusetts 02139, USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1383388843808075138","@type":"Researcher","foaf:name":[{"@value":"W. Daughton"}],"jpcoar:affiliationName":[{"@value":"Los Alamos National Laboratory 2 , Los Alamos, New Mexico 87545, USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"1070664X"},{"@type":"EISSN","@value":"10897674"}],"prism:publicationName":[{"@value":"Physics of Plasmas"}],"dc:publisher":[{"@value":"AIP Publishing"}],"prism:publicationDate":"2012-11-01","prism:volume":"19","prism:number":"11","prism:startingPage":"112108"},"reviewed":"false","url":[{"@id":"https://pubs.aip.org/aip/pop/article-pdf/doi/10.1063/1.4766895/15945972/112108_1_online.pdf"}],"createdAt":"2012-11-13","modifiedAt":"2023-06-25","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004240189418880","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Spatial dimensions of the electron diffusion region in anti-parallel magnetic reconnection"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285708268716032","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Structure of the Current Sheet in the 11 July 2017 Electron Diffusion Region Event"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565164303836288","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Currents and associated electron scattering and bouncing near the diffusion region at Earth's magnetopause"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567183868976384","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Physical processes of driven magnetic reconnection in collisionless plasmas: Zero guide field case"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848658845689088","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Laboratory study of diffusion region with electron energization during high guide field reconnection"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588892078327552","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Visualization tool for three-dimensional plasma velocity distributions (ISEE_3D) as a plug-in for SPEDAS"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1063/1.4766895"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0761-9_references_DOI_1jBRxNXFFK2mqkJetuqDstoZDQL"},{"@type":"CROSSREF","@value":"10.5194/angeo-34-357-2016_references_DOI_1jBRxNXFFK2mqkJetuqDstoZDQL"},{"@type":"CROSSREF","@value":"10.1029/2018ja026028_references_DOI_1jBRxNXFFK2mqkJetuqDstoZDQL"},{"@type":"CROSSREF","@value":"10.1002/2016gl068359_references_DOI_1jBRxNXFFK2mqkJetuqDstoZDQL"},{"@type":"CROSSREF","@value":"10.1063/1.4932337_references_DOI_1jBRxNXFFK2mqkJetuqDstoZDQL"},{"@type":"CROSSREF","@value":"10.1063/1.4932345_references_DOI_1jBRxNXFFK2mqkJetuqDstoZDQL"}]}