HDPWS

PSP - FIELDS RFS/LFR - L3 - SQTN

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/PSP/LFR/psp-rfs-sqtn

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

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NumericalData

ResourceID
spase://CNES/NumericalData/CDPP-AMDA/PSP/LFR/psp-rfs-sqtn
ResourceHeader
ResourceName
PSP - FIELDS RFS/LFR - L3 - SQTN
AlternateName
Simplified Quasi-Thermal Noise
ReleaseDate
2024-04-22 07:53:55Z
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
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'.
Contacts
Role Person StartDate StopDate Note
1. DataProducer spase://CNES/Person/CDPP-AMDA/M.Moncuquet
InformationURL
Name
First In Situ Measurements of Electron Density and Temperature from Quasi-thermal Noise Spectroscopy with Parker Solar Probe/FIELDS
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/
InformationURL
Name
CDPP Archive
URL
Description
Data archive in CNES
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA HAPI Server
URL
Style
HAPI
ProductKey
psp-rfs-sqtn
Description
Web Service to this product using the HAPI interface.
Format
CSV
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.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDPP/AMDA Web application
URL
Description
Access to Data via CDPP/AMDA Web application.
Format
CSV
Format
VOTable
Format
CDF
Format
PNG
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.
ProviderName
CDPP
ProviderResourceName
DA_TC_PARKERSP_FIELDS_RFS_SQTN
InstrumentIDs
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
2018-10-15 00:00:26Z
StopDate
2023-06-27 23:59:57Z
CadenceMin
PT7S
CadenceMax
PT56S
ObservedRegion
Heliosphere.Inner
ObservedRegion
Sun.Corona
Parameter #1
Name
density e-
ParameterKey
psp_sqtn_n
Description
The electron density is deduced from the automatic detection of the plasma frequency in RFS spectra with SQTN spectroscopy
UCD
phys.density;phys.electron
Units
cm-3
UnitsConversion
1.e-6>m^-3
FillValue
-1.0e+31
Particle
ParticleType
Electron
ParticleQuantity
NumberDensity
Parameter #2
Name
density e- : delta
ParameterKey
psp_sqtn_ndelta
Description
Uncertainty of electron density.
UCD
phys.density;phys.electron
Units
cm-3
UnitsConversion
1.e-6>m^-3
Structure
Size
2
Element
Name
n_delta_minus
Index
1
ParameterKey
psp_sqtn_ndelta(0)
Element
Name
n_delta_plus
Index
2
ParameterKey
psp_sqtn_ndelta(1)
FillValue
-1.0e+31
Support
SupportQuantity
DataQuality
Parameter #3
Name
temperature e-
ParameterKey
psp_sqtn_t
Description
The electron core temperature is deduced from the QTN level below fp in RFS spectra with SQTN spectroscopy
UCD
phys.temperature;phys.electron
Units
eV
FillValue
-1.0e+31
Particle
ParticleType
Electron
ParticleQuantity
Temperature