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IMP 8 Cosmic Ray Nuclear Composition (CRNC) hourly count rates of heavy nuclei

(2025). IMP 8 Cosmic Ray Nuclear Composition (CRNC) hourly count rates of heavy nuclei. [Data set]. Space Physics Data Facility. https://doi.org/10.48322/5v3x-mz77. Accessed on .

Note: Proper references, including or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/NumericalData/IMP8/CRNC/Heavies_PT1H

Description
This data set contains hourly, spin-averaged count rates of heavy nuclei, and of particles penetrating the anticoincidence sensor, from the IMP8 Cosmic Ray Nuclear Composition experiment of U. Chicago and UNH. Included are rates of CNO nuclei at E.LT.80 MeV/n and E.GT.80 MeV/n, of Z.GT.8 nuclei at "low" and "high" energies, and of penetrating particles (protons with E.GT.106 MeV, etc.)

Metadata Rights
CC0-1.0: Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data may be subject to a different license.

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Details

Version:2.7.1

NumericalData

ResourceID
spase://NASA/NumericalData/IMP8/CRNC/Heavies_PT1H
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
IMP 8 Cosmic Ray Nuclear Composition (CRNC) hourly count rates of heavy nuclei
DOI
https://doi.org/10.48322/5v3x-mz77
ReleaseDate
2025-12-04 13:29:34Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-11 18:39:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:02:24Z
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 13:29:34Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
This data set contains hourly, spin-averaged count rates of heavy nuclei, and of particles penetrating the anticoincidence sensor, from the IMP8 Cosmic Ray Nuclear Composition experiment of U. Chicago and UNH. Included are rates of CNO nuclei at E.LT.80 MeV/n and E.GT.80 MeV/n, of Z.GT.8 nuclei at "low" and "high" energies, and of penetrating particles (protons with E.GT.106 MeV, etc.)
Acknowledgement
Acknowledge the late John A. Simpson, the original CRNC PI, and Clifford Lopate/UNH, current PI.
PublicationInfo
Authors
Lopate, Clifford
PublicationDate
2025-11-14 16:02:24Z
PublishedBy
Space Physics Data Facility
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/Clifford.Lopate
InformationURL
Name
Readme file at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/heavies/aareadme.txt
InformationURL
Name
Comprehensive data descriptive file
URL
https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/15min_asci/voldesc.sfd
Description
SFDU-formatted file describing the CRNC instrument and the 15-min data set of count rates and pulse height data from which the hourly rates data set was created.
PriorIDs
spase://VEPO/NumericalData/IMP8/CRNC/Heavies_PT1H
spase://VSPO/NumericalData/IMP8/CRNC/Heavies_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
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/heavies/
Description
ftp access to subdirectory holding annual ASCII files
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/heavies/
Description
In CDF via HTTP from SPDF
AccessURL
Name
FTPBrowser
URL
https://omniweb.gsfc.nasa.gov/ftpbrowser/imp_chi_crnc_1h.html
Description
Subset, plot and list fluxes of protons, alpha particles and electron, and count rates of heavies, via FTPBrowser
Format
Text
DataExtent
Quantity
0.6
Units
MB
Per
P1Y
Acknowledgement
Acknowledge C. Lopate, J. Simpson, and GSFC/SPDF (Space Physics Data Facility)
InstrumentIDs
spase://SMWG/Instrument/IMP8/CRNC
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1973-10-30 00:00:00
StopDate
2001-10-26 00:00:00
Cadence
PT1H
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Time
ParameterKey
Column_1-Column_3
Description
Time at start of flux average, as year, day, hour
Cadence
PT1H
Structure
Size
3
Description
year, day, hour
Support
SupportQuantity
Temporal
Parameter #2
Name
Fractional Coverage
ParameterKey
Column_4
Description
Fractional counting coverage (0-1) during this hour
Cadence
PT1H
Support
SupportQuantity
Temporal
Parameter #3
Name
Count rates of penetrating particles
ParameterKey
Columns_5
Description
Spin-integrated count rates of particles that penetrate the anticoincidence sensor. These include E.GT.106 MeV protons and other particles
Cadence
PT1H
Units
1/sec
Particle
ParticleType
Ion
ParticleQuantity
CountRate
Parameter #4
Name
Count rates of Z.GT.8 nuclei
ParameterKey
Column_6-Column_7
Description
Spin-integrated count rates of Z.GT.8 nuclei, at 1-hour resolution, in two energy bins, low and high
Cadence
PT1H
Units
1/sec
Structure
Size
2
Description
Array of two Z.GT.8 count rates
Particle
ParticleType
Ion
ParticleQuantity
CountRate
Parameter #5
Name
Count rates of CNO nuclei
ParameterKey
Column_8-Column_9
Description
Spin-integrated count rates of CNO nuclei, at 1-hour resolution, in two energy bins: E.LT.80 MeV/n and E.GT.80 MeV/n
Cadence
PT1H
Units
1/sec
Structure
Size
2
Description
Array of two CNO count rates
Particle
ParticleType
Ion
ParticleQuantity
CountRate
NASA Insignia
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Site Editor: Tami Kovalick
SPDF ROR ID
SPDF re3data ID
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Last Updated: 2025-12-04