{"@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/1360011142932016000.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/ja087ia11p09107"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJA087iA11p09107"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JA087iA11p09107"}}],"dc:title":[{"@value":"Helium resonance and dispersion effects on geostationary Alfven/ion cyclotron waves"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>To understand observed structure and growth patterns of geostationary Alfvén/ion cyclotron waves, the properties of the hot proton cyclotron instability within a helium rich plasma are explored here. This exploration proceeds with an examination of the net linear wave amplifications that result as a wave propagates through the magnetic gradients of a realistic magnetic field model (linearity is discussed and justified). By taking care in generalizing a single pass model to a multiple pass system, the following conclusions have been reached: (1) The basic structure of the frequency gap that is observed close to the helium cyclotron frequency can be explained by the ‘stop‐gap’ dispersion effect; however, the helium cyclotron resonance effect contributes to the gap formation leading to He<jats:sup>+</jats:sup> ion energization. (2) The presence of the magnetic gradients virtually insures that helium ion energization (by means of the low frequency wave branch only) is the inevitable consequence of the wave generation process. (3) The energized helium ions will sparsely populate a broad range of geomagnetic latitudes (±15 degrees) but will be concentrated strongly within several (2–4) degrees of the geomagnetic equator. (4) The presence of low percentages of helium ions is most likely to suppress the wave generation process (ATS 6 satellite observations support this conclusion for a portion of the wave spectrum).</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380011142932016000","@type":"Researcher","foaf:name":[{"@value":"B. H. Mauk"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1982-11","prism:volume":"87","prism:number":"A11","prism:startingPage":"9107","prism:endingPage":"9119"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJA087iA11p09107"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JA087iA11p09107"}],"createdAt":"2008-02-06","modifiedAt":"2023-09-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050845763137853440","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Onboard software of Plasma Wave Experiment aboard Arase: instrument management and signal processing of Waveform Capture/Onboard Frequency Analyzer"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283689326488320","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Electromagnetic ion cyclotron waves in the Earth's magnetosphere with a kappa‐Maxwellian particle distribution"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285704782866176","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Spectral characteristics of steady quiet‐time EMIC waves observed at geosynchronous orbit"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/ja087ia11p09107"},{"@type":"CROSSREF","@value":"10.1002/2015ja021346_references_DOI_1iZ88NGa5UH4Y6eowgsPWUanjUi"},{"@type":"CROSSREF","@value":"10.1002/2016ja022957_references_DOI_1iZ88NGa5UH4Y6eowgsPWUanjUi"},{"@type":"CROSSREF","@value":"10.1186/s40623-018-0838-0_references_DOI_1iZ88NGa5UH4Y6eowgsPWUanjUi"}]}