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Pioneer 11 Trapped Radiation Detector (TRD) 1-Hour Count Rates

(2025). Pioneer 11 Trapped Radiation Detector (TRD) 1-Hour Count Rates [Data set]. Space Physics Data Facility.

ResourceID
spase://NASA/NumericalData/Pioneer11/TRD/PT1H

Description

Hourly count rates from UCSD Trapped Radiation Detector
(TRD) carried on Pioneer 11. Included are four rates, C1 and C3 from the
Cerenkov counter and M1L and M3L from the Minimum Ionizing Particle Counter.
C1 corresponds to >480 MeV/n ions (typically 80% protons and 20% Z>1 nuclei).
C3 corresponds to >650 MeV/n ions (typically 30% protons and 70% Z>1 nuclei).
M1L corresponds to >80 MeV/n ions (typically 90% protons and 10% Z>1 nuclei).
M3L corresponds to 80-300 MeV protons (50%) and >80 MeV/n Z>1 nuclei (50%).
The data are ftp-accessible in annual ASCII files and via FTPBrowser.
The hourly averages were computed at NSSDC from 30-min data still offline
(as of Feb. 2009).

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Details

Version:2.7.1

MetadataRightsList

Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions

Version:2.7.1

NumericalData

ResourceID
spase://NASA/NumericalData/Pioneer11/TRD/PT1H
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Pioneer 11 Trapped Radiation Detector (TRD) 1-Hour Count Rates
ReleaseDate
2025-12-04 13:30:56Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-11 18:39:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:02:53Z
Note
Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:30:56Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description

Hourly count rates from UCSD Trapped Radiation Detector
(TRD) carried on Pioneer 11. Included are four rates, C1 and C3 from the
Cerenkov counter and M1L and M3L from the Minimum Ionizing Particle Counter.
C1 corresponds to >480 MeV/n ions (typically 80% protons and 20% Z>1 nuclei).
C3 corresponds to >650 MeV/n ions (typically 30% protons and 70% Z>1 nuclei).
M1L corresponds to >80 MeV/n ions (typically 90% protons and 10% Z>1 nuclei).
M3L corresponds to 80-300 MeV protons (50%) and >80 MeV/n Z>1 nuclei (50%).
The data are ftp-accessible in annual ASCII files and via FTPBrowser.
The hourly averages were computed at NSSDC from 30-min data still offline
(as of Feb. 2009).

Acknowledgement
Please acknowledge the PI, R. Walker Fillius, and the GSFC Space Physics Data Facility.
PublicationInfo
Authors
Fillius, R. W.
PublicationDate
2025-11-14 16:02:53Z
PublishedBy
Space Physics Data Facility
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/R.Walker.Fillius
InformationURL
PriorIDs
spase://VEPO/NumericalData/Pioneer11/TRD/PT1H
spase://VSPO/NumericalData/Pioneer11/TRD/PT1H
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
AccessURL
AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from SPDF

Format
Text
DataExtent
Quantity
14
Units
MB
Acknowledgement
Please acknowledge the PI, R. Walker Fillius, and the GSFC Space Physics Data Facility
InstrumentIDs
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1973-04-16 00:00:00
StopDate
1991-08-31 00:00:00
Cadence
PT1H
ObservedRegion
Heliosphere.Outer
Parameter #1
Name
C1 Count rate, ions > 480 MeV/n
ParameterKey
Column08
Description

Hourly count rate of protons > 480 MeV (~80% of counts)
and >480 MeV/n Z>1 ions

Cadence
PT1H
Units
cps
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
480
High
INF
Units
MeV/n
Parameter #2
Name
C3 Count rate, ions > 650 MeV/n
ParameterKey
Column09
Description

Hourly count rate of protons > 650 MeV (~30% of counts)
and >650 MeV/n Z>1 ions

Cadence
PT1H
Units
cps
Particle
ParticleType
Ion
ParticleQuantity
CountRate
EnergyRange
Low
650
High
INF
Units
MeV/n
Parameter #3
Name
M3L Count rate, ions > 80 MeV/n
ParameterKey
Column06
Description

Hourly count rate of protons between 80 and 300 MeV
(~50% of counts) and >80 MeV/n Z>1 ions

Cadence
PT1H
Units
cps
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
80
High
300
Units
MeV
Parameter #4
Name
M1L Count rate, ions (mostly protons) > 80 MeV/n
ParameterKey
Column07
Description

Hourly count rate of protons above 80 MeV
(~90% of counts) and >80 MeV/n Z>1 ions

Cadence
PT1H
Units
cps
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
80
High
INF
Units
MeV/n