Data Set Information
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| DATA_SET_NAME |
VG2 URA PLS DERIVED RDR ION FIT 48SEC V1.0
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| DATA_SET_ID |
VG2-U-PLS-5-RDR-IONFIT-48SEC-V1.0
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| NSSDC_DATA_SET_ID |
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| DATA_SET_TERSE_DESCRIPTION |
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| DATA_SET_DESCRIPTION |
This data set contains the ion densities and temperatures along with formal 1 Sigma errors obtained from Voyager 2 PLS data (voltage range 10-5950 eV/Q) at Uranus by fitting the measured spectra with isotropic Maxwellian distributions. Up to three isotropic proton components (warm, hot and intermediate) were used to match the observations. The plasma was assumed to be rigidly corotating. Uncertainties in plasma parameters are a factor of 2 in the charging region from 19:39-21:58 on day 24, less than 20% elsewhere. A complete description of this data set is given in McNutt et al. (1987) and Selesnick and McNutt (1987). DATASET PARAMETERS: Each data record consists of six lines: 1. Time of measurement Mode (A3): L or M. 3-6. Cup identifier (A1): A, B, C, or D. Number of sets of channels used in fit (I3). Beginning and ending channel of each set (2I4 repeated for each set). 7-19.Density (CM-3) and 1 sigma uncertainty for first fit component (2E10.3). Same for second fit component (2E10.3). Same for third fit component (2E10.3). Thermal speed (KM/S) and 1 sigma uncertainty for First fit component (2E10.3). Same for second fit component (2E10.3). Same for third fit component (2E10.3). Values of 1.E32 indicate that the parameter could not be obtained from the data using the standard analysis technique. Additional information about this dataset and the instrument which produced it can be found elsewhere in this catalog. An overview of the data in this data set can be found in McNutt et al. (1987) and Selesnick and McNutt (1987) and a complete instrument description can be found in Bridge (1977). SAMPLING_PARAMETER_NAME = TIME SAMPLING_PARAMETER_RESOLUTION = 48.000000 MINIMUM_SAMPLING_PARAMETER = N/A MAXIMUM_SAMPLING_PARAMETER = N/A SAMPLING_PARAMETER_INTERVAL = 48.000000 MINIMUM_AVAILABLE_SAMPLING_INT = 24.000000 SAMPLING_PARAMETER_UNIT = SECOND DATA_SET_PARAMETER_NAME = ION DENSITY NOISE_LEVEL = N/A DATA_SET_PARAMETER_UNIT = CM-3 SAMPLING_PARAMETER_NAME = TIME SAMPLING_PARAMETER_RESOLUTION = 48.000000 MINIMUM_SAMPLING_PARAMETER = N/A MAXIMUM_SAMPLING_PARAMETER = N/A SAMPLING_PARAMETER_INTERVAL = 48.000000 MINIMUM_AVAILABLE_SAMPLING_INT = 24.000000 SAMPLING_PARAMETER_UNIT = SECOND DATA_SET_PARAMETER_NAME = ION THERMAL SPEED NOISE_LEVEL = N/A DATA_SET_PARAMETER_UNIT = KM/S
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| DATA_SET_RELEASE_DATE |
1993-02-01T00:00:00.000Z
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| START_TIME |
1986-01-24T03:01:48.451Z
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| STOP_TIME |
1986-01-24T07:55:24.431Z
|
| MISSION_NAME |
VOYAGER
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| MISSION_START_DATE |
1972-07-01T12:00:00.000Z
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| MISSION_STOP_DATE |
N/A (ongoing)
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| TARGET_NAME |
URANUS
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| TARGET_TYPE |
PLANET
|
| INSTRUMENT_HOST_ID |
VG2
|
| INSTRUMENT_NAME |
PLASMA SCIENCE EXPERIMENT
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| INSTRUMENT_ID |
PLS
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| INSTRUMENT_TYPE |
PLASMA INSTRUMENT
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| NODE_NAME |
planetary plasma interactions
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| ARCHIVE_STATUS |
ARCHIVED
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| CONFIDENCE_LEVEL_NOTE |
This data set provides a reliable estimate of the ion density and energy in the PLS energy range (10-5950 eV) throughout the region where data is provided. All ion components are fit with Maxwellians although they may not be Maxwellian in nature. Formal 1 sigma uncertainties for the derived densities and thermal speeds are given in the data set and range from a few to 20%. Underestimates of ion density and temperature due to ions outside the PLS energy range are less than 10%.
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| CITATION_DESCRIPTION |
Richardson, J.D., VG2-U-PLS-5-RDR-IONFIT-48SEC-V1.0, VG2 URA PLS DERIVED RDR ION FIT 48SEC V1.0, NASA Planetary Data System, 1993.
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| ABSTRACT_TEXT |
This data set contains the ion densities and temperatures along with formal 1 Sigma errors obtained from Voyager 2 PLS data (voltage range 10-5950 eV/Q) at Uranus by fitting the measured spectra with isotropic Maxwellian distributions. Up to three isotropic proton components (warm, hot and intermediate) were used to match the observations. The plasma was assumed to be rigidly corotating. Uncertainties in plasma parameters are a factor of 2 in the charging region from 19:39-21:58 on day 24, less than 20% elsewhere. A complete description of this data set is given in McNutt et al. (1987) and Selesnick and McNutt (1987).
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| PRODUCER_FULL_NAME |
JOHN D. RICHARDSON
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| SEARCH/ACCESS DATA |
Planetary Plasma Interactions Website
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