psp-rfs-sqtn.xml
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<?xml version="1.0" encoding="UTF-8"?>
<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2.4.1.xsd">
<Version>2.4.1</Version>
<NumericalData>
<ResourceID>spase://CNES/NumericalData/CDPP-AMDA/PSP/LFR/psp-rfs-sqtn</ResourceID>
<ResourceHeader>
<ResourceName>L3 - SQTN</ResourceName>
<AlternateName>Simplified Quasi-Thermal Noise</AlternateName>
<ReleaseDate>2024-04-22T05:53:55Z</ReleaseDate>
<Description>These data are derived from power spectra (10.5 kHz to 1.7 MHz) acquired by the low-frequency receiver (LFR) of the Radio Frequency Spectrometer (RFS), part of the FIELDS instrument suite on PSP.
The technique of QTN spectroscopy consists of using the power spectrum of the voltage induced on an electric antenna by the particle quasi-thermal motion, measured by a radio receiver connected to an electric antenna. The signature of the electrons is a line at the electron plasma frequency, which leads to the total electron density (proportionnal to the square of electron plasma frequency), whereas the shape of the line reveals the electron kinetic temperature, as well as its themral (core) and suprathermal components.
For more information on the QTN spectroscopy, please see : Moncuquet, M. et al. (2020), First in-situ measurements electron density and temperature from quasi-thermal noise spectroscopy with Parker Solar Probe/FIELDS, The Astrophysical Journal Supplement Series, Volume 246, p.44, doi:10.3847/1538-4365/ab5a84/
For more information on the FIELDS instruments and datasets, please see: FIELDS Data Center</Description>
<Acknowledgement>In publications, we recommend to add the following sentence in the acknowledgments: 'The authors acknowledge LESIA (Laboratoire d Etudes Spatiales et Instrumentation en Astrophysique), Observatoire de PARIS, CNRS (Centre National de la Recherche Scientifique) and CNES (Centre National d'Etudes Spatiales) for support for production of these data and CDPP (Centre de Donnees de la Physique des Plasmas) for their archiving and provision'.
</Acknowledgement>
<Contact>
<PersonID>spase://CNES/Person/CDPP-AMDA/M.Moncuquet</PersonID>
<Role>DataProducer</Role>
</Contact>
<InformationURL>
<Name>First In Situ Measurements of Electron Density and Temperature from Quasi-thermal Noise Spectroscopy with Parker Solar Probe/FIELDS</Name>
<URL>https://doi.org/10.3847/1538-4365/ab5a84</URL>
<Description>Moncuquet, M. et al. (2020), First in-situ measurements electron density and temperature from quasi-thermal noise spectroscopy with Parker Solar Probe/FIELDS, The Astrophysical Journal Supplement Series, Volume 246, p.44, doi:10.3847/1538-4365/ab5a84/</Description>
</InformationURL>
<InformationURL>
<Name>CDPP Archive</Name>
<URL>https://cdpp-archive.cnes.fr</URL>
<Description>Data archive in CNES</Description>
</InformationURL>
</ResourceHeader>
<AccessInformation>
<RepositoryID>spase://SMWG/Repository/CDPP/AMDA</RepositoryID>
<Availability>Online</Availability>
<AccessRights>Open</AccessRights>
<AccessURL>
<Name>CDPP/AMDA HAPI Server</Name>
<URL>https://amda.irap.omp.eu/service/hapi</URL>
<Style>HAPI</Style>
<ProductKey>psp-rfs-sqtn</ProductKey>
<Description>Web Service to this product using the HAPI interface.</Description>
</AccessURL>
<Format>CSV</Format>
<Acknowledgement>Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.</Acknowledgement>
</AccessInformation>
<AccessInformation>
<RepositoryID>spase://SMWG/Repository/CDPP/AMDA</RepositoryID>
<Availability>Online</Availability>
<AccessRights>Open</AccessRights>
<AccessURL>
<Name>CDPP/AMDA Web application</Name>
<URL>https://amda.cdpp.eu</URL>
<Description>Access to Data via CDPP/AMDA Web application.</Description>
</AccessURL>
<Format>CSV</Format>
<Format>VOTable</Format>
<Format>CDF</Format>
<Format>PNG</Format>
<Acknowledgement>Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.</Acknowledgement>
</AccessInformation>
<ProviderName>CDPP</ProviderName>
<ProviderResourceName>DA_TC_PARKERSP_FIELDS_RFS_SQTN</ProviderResourceName>
<InstrumentID>spase://CNES/Instrument/CDPP-AMDA/PSP/LFR</InstrumentID>
<MeasurementType>ThermalPlasma</MeasurementType>
<TemporalDescription>
<TimeSpan>
<StartDate>2018-10-15T00:00:26Z</StartDate>
<StopDate>2023-06-27T23:59:57Z</StopDate>
</TimeSpan>
<CadenceMin>PT7S</CadenceMin>
<CadenceMax>PT56S</CadenceMax>
</TemporalDescription>
<ObservedRegion>Heliosphere.Inner</ObservedRegion>
<ObservedRegion>Sun.Corona</ObservedRegion>
<Parameter>
<Name>density e-</Name>
<ParameterKey>psp_sqtn_n</ParameterKey>
<Description>The electron density is deduced from the automatic detection of the plasma frequency in RFS spectra with SQTN spectroscopy</Description>
<UCD>phys.density;phys.electron</UCD>
<Units>cm-3</Units>
<UnitsConversion>1.e-6>m^-3</UnitsConversion>
<FillValue>-1.0e+31</FillValue>
<Particle>
<ParticleType>Electron</ParticleType>
<ParticleQuantity>NumberDensity</ParticleQuantity>
</Particle>
</Parameter>
<Parameter>
<Name>density e- : delta</Name>
<ParameterKey>psp_sqtn_ndelta</ParameterKey>
<Description>Uncertainty of electron density.</Description>
<UCD>phys.density;phys.electron</UCD>
<Units>cm-3</Units>
<UnitsConversion>1.e-6>m^-3</UnitsConversion>
<Structure>
<Size>2</Size>
<Element>
<Name>n_delta_minus</Name>
<Index>1</Index>
<ParameterKey>psp_sqtn_ndelta(0)</ParameterKey>
</Element>
<Element>
<Name>n_delta_plus</Name>
<Index>2</Index>
<ParameterKey>psp_sqtn_ndelta(1)</ParameterKey>
</Element>
</Structure>
<FillValue>-1.0e+31</FillValue>
<Support>
<SupportQuantity>DataQuality</SupportQuantity>
</Support>
</Parameter>
<Parameter>
<Name>temperature e-</Name>
<ParameterKey>psp_sqtn_t</ParameterKey>
<Description>The electron core temperature is deduced from the QTN level below fp in RFS spectra with SQTN spectroscopy</Description>
<UCD>phys.temperature;phys.electron</UCD>
<Units>eV</Units>
<FillValue>-1.0e+31</FillValue>
<Particle>
<ParticleType>Electron</ParticleType>
<ParticleQuantity>Temperature</ParticleQuantity>
</Particle>
</Parameter>
</NumericalData>
</Spase>