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Product_Observational
- Identification_Area
-
- logical_identifier
- urn:nasa:pds:vg2-crs-jup-avg-flux:data-ions:ld2-rate
- version_id
- 1.0
- title
- Voyager 2 Jupiter CRS Derived Ion Averaged Data - LD2_RATE
- information_model_version
- 1.13.0.0
- product_class
- Product_Observational
- Citation_Information
-
- author_list
- Vogt, R. E.
- publication_year
- 2021
- description
- This product includes proton and ion counting rate data (1.8-13 MeV) from the Cosmic Ray
instrument on Voyager 2 from the Jupiter encounter. The data contains
15 minute averages of the proton and ion counting rate.
The data were not suitable for an absolute flux determination and are given
in counts per second. The detector responds to protons and ions that
penetrate either (a) 0.8 mg/cm**2 Al plus 8.0 mg/cm**2 Si and lose at least
200 keV in a 35 [micron] Si detector (1.8 to 13 MeV) or (b) pass through
> 140 mg/cm**2 Al. For an E**-2 proton spectrum, the contributions from (a)
and (b) would be about equal; however, the proton spectrum is substantially
softer throughout most of the magnetosphere and the detector should respond
primarily to (a). Dead time corrections are given by:
R
R[t] = -------------------
1 - 2.55x10**-5 R
where R is the count rate in counts/sec. Thus, correction to the supplied
data are small for R less than 4000 c/sec, but become 80 large in the middle
magnetosphere that the magnitude of even relative intensity changes
becomes uncertain.
From the header data file:
07/03/79 00:00:00 to 07/13/79 23:45:00
A = (LD2-(U) / 1.000E 00)
LD2 = L2
- Modification_History
-
- Modification_Detail
-
- modification_date
- 2021-10-12
- version_id
- 1.0
- description
- Original LD2_RATE.TAB from the PDS3 VG2-J-CRS-5-SUMM-FLUX-V1.0 dataset, DATA directory, released 1997-12-01.
The metadata were migrated to PDS4, the data are unchanged. This is the first version converted to PDS4.
- Observation_Area
-
- Time_Coordinates
-
- start_date_time
- 1979-07-03T00:00:00.000Z
- stop_date_time
- 1979-07-13T23:45:00.000Z
- Primary_Result_Summary
-
- purpose
- Science
- processing_level
- Calibrated
- Science_Facets
-
- domain
- Magnetosphere
- discipline_name
- Particles
- facet1
- Ions
- facet2
- Cosmic Ray
- Investigation_Area
-
- name
- Voyager
- type
- Mission
- Internal_Reference
-
- lid_reference
-
urn:nasa:pds:context:investigation:mission.voyager
- reference_type
- data_to_investigation
- Observing_System
-
- Observing_System_Component
-
- name
- Voyager 2
- type
- Spacecraft
- Internal_Reference
-
- lid_reference
-
urn:nasa:pds:context:instrument_host:spacecraft.vg2
- reference_type
- is_instrument_host
- Observing_System_Component
-
- name
- Cosmic Ray Subsystem
- type
- Instrument
- Internal_Reference
-
- lid_reference
-
urn:nasa:pds:context:instrument:vg2.crs
- reference_type
- is_instrument
- Target_Identification
-
- name
- Jupiter
- type
- Planet
- Internal_Reference
-
- lid_reference
-
urn:nasa:pds:context:target:planet.jupiter
- reference_type
- data_to_target
- Target_Identification
-
- name
- Ganymede
- type
- Satellite
- Internal_Reference
-
- lid_reference
-
urn:nasa:pds:context:target:satellite.jupiter.ganymede
- reference_type
- data_to_target
- Mission_Area
-
- Voyager2
-
- mission_phase_name
- Jupiter Encounter
- spacecraft_clock_start_count
- 2/20451:22:011
- spacecraft_clock_stop_count
- 2/20781:03:221
- Discipline_Area
-
- Particle_Observation
-
- energy_range_minimum
- 1.8
- energy_range_maximum
- 13
- Particle_Parameter
-
- particle_type
- Ions
- particle_measurement_type
- Flux
- Reference_List
-
- Internal_Reference
-
- lid_reference
-
urn:nasa:pds:vg2-crs-jup-avg-flux:browse-ions:ld2-rate
- reference_type
- data_to_browse
- Source_Product_External
-
- external_source_product_identifier
- VG2-J-CRS-5-SUMM-FLUX-V1.0:LD2_RATE.TAB
- reference_type
- data_to_calibrated_source_product
- doi
- 10.17189/1519936
- curating_facility
- PDS Planetary Plasma Interactions Node
- description
- This is the first version converted to PDS4. The DOI provided
references the PDS3 source data set.
- File_Area_Observational
-
- File
-
- file_name
- LD2_RATE.TAB
- creation_date_time
- 1996-10-01
- file_size
- 53856
- records
- 1056
- md5_checksum
- 231a3900a11ea0664e336444412b6ffb
- comment
- This file is unmodified from the PDS3 version.
- Table_Character
-
- offset
- 0
- records
- 1056
- record_delimiter
- Carriage-Return Line-Feed
- Record_Character
-
- fields
- 3
- groups
- 0
- record_length
- 51
- Field_Character
-
- name
- Time
- field_number
- 1
- field_location
- 1
- data_type
- ASCII_Date_Time_YMD
- field_length
- 23
- description
- Time column. This field contains time in PDS format
yyyy-mm-ddThh:mm:ss.sss. The individual elements of the time
field can be read using the format (i4,4(1x,i2),1x,f6.3) yr, mon,
day, hr, min, sec.
- Field_Character
-
- name
- LD2 Rate
- field_number
- 2
- field_location
- 25
- data_type
- ASCII_Real
- field_length
- 12
- unit
- Counts/Sec
- description
- Column contains average LD2 particle flux.
- Special_Constants
-
- missing_constant
- -9.99999e+10
- Field_Character
-
- name
- Standard Deviation in LD2 Rate
- field_number
- 3
- field_location
- 38
- data_type
- ASCII_Real
- field_length
- 12
- unit
- Counts/Sec
- description
- Column contains the statistical error associated with the LD2 RATE.
- Special_Constants
-
- missing_constant
- -9.99999e+10