spase-metadata.org SPASE landing pages.

Data Access

Pioneer 10 Charged Particle Composition (CPC) 1-Hour Count Rates

(2025). Pioneer 10 Charged Particle Composition (CPC) 1-Hour Count Rates [Data set]. Space Physics Data Facility.

ResourceID
spase://NASA/NumericalData/Pioneer10/CPC/PT1H

Description

Hourly count rates from U. Chicago Charged Particle Composition
Investigation (CPC) carried on Pioneer 10. There are four rates each, for protons
and alpha particles, at 11-20, 20-24, 24-29, 29-67 MeV/n. There are four additional
count rates, corresponding to 7-17 MeV electrons, Z>=1 ions with E>67 MeV/n, Z>5 ions
with E>67 MeV/n, and 2 x minimizing ionizing particles. The data are ftp-accessible
in annual ASCII files and via FTPBrowser. The hourly averages were computed
from 15-min data (counts, accumulation times, PHA-based box counts, etc.) that are
also available via ftp from nssdcftp.gsfc.nasa.gov.

View XML | View JSON | Edit

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/Pioneer10/CPC/PT1H
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Pioneer 10 Charged Particle Composition (CPC) 1-Hour Count Rates
ReleaseDate
2025-12-04 13:30:54Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-11 18:39:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:02:52Z
Note
Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:30:54Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description

Hourly count rates from U. Chicago Charged Particle Composition
Investigation (CPC) carried on Pioneer 10. There are four rates each, for protons
and alpha particles, at 11-20, 20-24, 24-29, 29-67 MeV/n. There are four additional
count rates, corresponding to 7-17 MeV electrons, Z>=1 ions with E>67 MeV/n, Z>5 ions
with E>67 MeV/n, and 2 x minimizing ionizing particles. The data are ftp-accessible
in annual ASCII files and via FTPBrowser. The hourly averages were computed
from 15-min data (counts, accumulation times, PHA-based box counts, etc.) that are
also available via ftp from nssdcftp.gsfc.nasa.gov.

Acknowledgement
Please acknowledge the PI, the late John A. Simpson, and the GSFC Space Physics Data Facility.
PublicationInfo
Authors
Simpson, John A.
PublicationDate
2025-11-14 16:02:52Z
PublishedBy
Space Physics Data Facility
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/John.A.Simpson
2.GeneralContactspase://SMWG/Person/R.Bruce.McKibben
InformationURL
Name
Readme file at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/cpi/ip_15min_ascii/cpi_p10_15min.sfdu
InformationURL
Name
Readme at SPDF for this data set
URL
https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/cpi/ip_1hour_ascii/p10cpihr_fmt.txt
PriorIDs
spase://VEPO/NumericalData/Pioneer10/CPC/PT1H
spase://VSPO/NumericalData/Pioneer10/CPC/PT1H
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
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
Name
FTPBrowser
URL
https://omniweb.gsfc.nasa.gov/ftpbrowser/p10_part_cpi_1h.html
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/cpi/ip_1hour_ascii/
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/cpi/ip_1hour_ascii/
Description

In CDF via HTTP from SPDF

Format
Text
DataExtent
Quantity
6
Units
MB
Acknowledgement
Please acknowledge the PI, the late John A. Simpson, and the GSFC Space Physics Data Facility
InstrumentIDs
spase://SMWG/Instrument/Pioneer10/CPC
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1972-03-03 00:00:00
StopDate
1992-08-29 00:00:00
Cadence
PT1H
ObservedRegion
Heliosphere.Outer
Parameter #1
Name
Count rate, protons 11-20 MeV
ParameterKey
Column04
Description

Hourly count rate of 11-20 MeV protons

Cadence
PT1H
Units
cps
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
11
High
20
Units
MeV
Parameter #2
Name
Count rate, protons 20-24 MeV
ParameterKey
Column06
Description

Hourly count rate of 20-24 MeV protons

Cadence
PT1H
Units
cps
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
20
High
24
Units
MeV
Parameter #3
Name
Count rate, protons 24-29 MeV
ParameterKey
Column08
Description

Hourly count rate of 24-29 MeV protons

Cadence
PT1H
Units
cps
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
24
High
29
Units
MeV
Parameter #4
Name
Count rate, protons 29-67 MeV
ParameterKey
Column10
Description

Hourly count rate of 29-67 MeV protons

Cadence
PT1H
Units
cps
Particle
ParticleType
Proton
ParticleQuantity
CountRate
EnergyRange
Low
29
High
67
Units
MeV
Parameter #5
Name
Count rate, alpha particles 11-20 MeV/n
ParameterKey
Column05
Description

Hourly count rate of 11-20 MeV/n alpha particles

Cadence
PT1H
Units
cps
Particle
ParticleType
AlphaParticle
ParticleQuantity
CountRate
EnergyRange
Low
11
High
20
Units
MeV/n
Parameter #6
Name
Count rate, alpha particles 20-24 MeV/n
ParameterKey
Column07
Description

Hourly count rate of 20-24 MeV/n alpha particles

Cadence
PT1H
Units
cps
Particle
ParticleType
AlphaParticle
ParticleQuantity
CountRate
EnergyRange
Low
20
High
24
Units
MeV/n
Parameter #7
Name
Count rate, alpha particles 24-29 MeV/n
ParameterKey
Column09
Description

Hourly count rate of 24-29 MeV/n alpha particles

Cadence
PT1H
Units
cps
Particle
ParticleType
AlphaParticle
ParticleQuantity
CountRate
EnergyRange
Low
24
High
29
Units
MeVn
Parameter #8
Name
Count rate, alpha particles 29-67 MeV/n
ParameterKey
Column11
Description

Hourly count rate of 29-67 MeV/n alpha particles

Cadence
PT1H
Units
cps
Particle
ParticleType
AlphaParticle
ParticleQuantity
CountRate
EnergyRange
Low
29
High
67
Units
MeV/n
Parameter #9
Name
Count rate, electrons, 7-17 MeV
ParameterKey
Column12
Description

Hourly count rate of 7-17 MeV electrons

Cadence
PT1H
Units
cps
Particle
ParticleType
Electron
ParticleQuantity
CountRate
EnergyRange
Low
7
High
17
Units
MeV
Parameter #10
Name
Count rate, 2 x minimizing ionizing
ParameterKey
Column13
Description

Hourly count rate of 2 x minimum ionizing particles

Cadence
PT1H
Units
cps
Particle
ParticleType
Ion
ParticleQuantity
CountRate
Parameter #11
Name
Count rate, ions, >67 MeV/n
ParameterKey
Column14
Description

Hourly count rate of >67 MeV/n, Z>=1 ions

Cadence
PT1H
Units
cps
Particle
ParticleType
Ion
ParticleQuantity
CountRate
EnergyRange
Low
67
High
INF
Units
MeV/n
Parameter #12
Name
Count rate, Z>5 ions, >67 MeV/n
ParameterKey
Column15
Description

Hourly count rate of >67 MeV/n, Z>=5 ions

Cadence
PT1H
Units
cps
Particle
ParticleType
Ion
ParticleQuantity
CountRate
EnergyRange
Low
67
High
INF
Units
MeV/n