id:"swepub:oai:DiVA.org:uu-517521"
Search: id:"swepub:oai:DiVA.org:uu-517521" > Estimating the opti...
- 1 of 1
- Previous record
- Next record
- To hitlist
- Xystouris, GeorgiosUniv Lancaster, Phys Dept, Lancaster LA1 4YB, England. (author)
Estimating the optical depth of Saturn's main rings using the Cassini Langmuir Probe
- Article/chapterEnglish2023
Publisher, publication year, extent ...
- Oxford University Press,2023
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:uu-517521
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-517521URI
- https://doi.org/10.1093/mnras/stad2793DOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- A Langmuir Probe (LP) measures currents from incident charged particles as a function of the applied bias voltage. While onboard a spacecraft the particles are either originated from the surrounding plasma, or emitted (e.g. through photoemission) from the spacecraft itself. The obtained current-voltage curve reflects the properties of the plasma in which the probe is immersed into, but also any photoemission due to illumination of the probe surface: As photoemission releases photoelectrons into space surrounding the probe, these can be recollected and measured as an additional plasma population. This complicates the estimation of the properties of the ambient plasma around the spacecraft. The photoemission current is sensitive to the extreme ultraviolet (UV) part of the spectrum, and it varies with the illumination from the Sun and the properties of the LP surface material, and any variation in the photoelectrons irradiance can be measured as a change in the current voltage curve. Cassini was eclipsed multiple times by Saturn and the main rings over its 14 yr mission. During each eclipse the LP recorded dramatic changes in the current-voltage curve, which were especially variable when Cassini was in shadow behind the main rings. We interpret these variations as the effect of spatial variations in the optical depth of the rings and hence use the observations to estimate the optical depth of Saturn's main rings. Our estimates are comparable with UV optical depth measurements from Cassini's remote sensing instruments.
Subject headings and genre
- NATURVETENSKAP Fysik Fusion, plasma och rymdfysik hsv//swe
- NATURAL SCIENCES Physical Sciences Fusion, Plasma and Space Physics hsv//eng
- opacity
- plasmas
- instrumentation: miscellaneous
- eclipses
- planets and satellites: rings
Added entries (persons, corporate bodies, meetings, titles ...)
- Arridge, Christopher S.Univ Lancaster, Phys Dept, Lancaster LA1 4YB, England. (author)
- Morooka, MichikoUppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen(Swepub:uu)mimor108 (author)
- Wahlund, Jan-ErikUppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen(Swepub:uu)janewahl (author)
- Univ Lancaster, Phys Dept, Lancaster LA1 4YB, England.Institutet för rymdfysik, Uppsalaavdelningen (creator_code:org_t)
Related titles
- In:Monthly notices of the Royal Astronomical Society: Oxford University Press526:4, s. 5839-58600035-87111365-2966
Internet link
Find in a library
- Monthly notices of the Royal Astronomical Society (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Xystouris, Georg ...
- Arridge, Christo ...
- Morooka, Michiko
- Wahlund, Jan-Eri ...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Fusion Plasma an ...
- Articles in the publication
- Monthly notices ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
