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Data Access

Apollo 14 ALSEP Electron and Proton Spectra, offline at NSSDC

Reasoner, David L. (2025). Apollo 14 ALSEP Electron and Proton Spectra, offline at NSSDC [Data set]. Space Physics Data Facility. https://doi.org/10.48322/k5xx-9t25 .

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

ResourceID
spase://NASA/NumericalData/Apollo14-LM/CPLEE/PT19S

Description

The data are 19.2-s count rates of electrons and protons at several energy steps between 40 eV and 20 keV. Two electrostatic analyzers, each feeding 6 detectors, are oriented vertical from the lunar surface and 60 degrees from vertical, towards lunar west.

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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/Apollo14-LM/CPLEE/PT19S
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Apollo 14 ALSEP Electron and Proton Spectra, offline at NSSDC
DOI
https://doi.org/10.48322/k5xx-9t25
ReleaseDate
2026-07-21 12:03:57Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-10 20:13:28Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:01:56Z
Note
Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:28:29Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-06-26 13:14:31Z
Note
Add 'Z' to TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
RevisionEvent
ReleaseDate
2026-07-21 12:03:57Z
Note
Added HelioData InformationURL. JWL
Description

The data are 19.2-s count rates of electrons and protons at several energy steps between 40 eV and 20 keV. Two electrostatic analyzers, each feeding 6 detectors, are oriented vertical from the lunar surface and 60 degrees from vertical, towards lunar west.

PublicationInfo
Authors
Reasoner, David L.
PublicationDate
2025-11-14 16:01:56Z
PublishedBy
Space Physics Data Facility
Contacts
Role Person StartDate StopDate Note
1. GeneralContact spase://SMWG/Person/H.Kent.Hills
2. PrincipalInvestigator spase://SMWG/Person/David.L.Reasoner
InformationURL
Name
HTTPS from SPDF (not with most browsers)
URL
https://spdf.gsfc.nasa.gov/pub/documents/old/documentation_from_nssdc/dataset_catalogs/DSC_0226.pdf
InformationURL
Name
HelioData
URL
https://helio.data.nasa.gov/dataset/Apollo14-LM_CPLEE_PT19S
Description

The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.

PriorIDs
spase://VSPO/NumericalData/SPHE_00885
spase://VSPO/NumericalData/Apollo14-LM/CPLEE/PT19S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Offline
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
NSSDC
URL
https://nssdc.gsfc.nasa.gov/nssdc/obtaining_data.html
Format
CDF
DataExtent
Quantity
500
Units
MB
ProcessingLevel
Uncalibrated
InstrumentIDs
spase://SMWG/Instrument/Apollo14-LM/CPLEE
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1971-02-05 00:00:00Z
StopDate
1973-03-02 00:00:00Z
Cadence
PT19S
ObservedRegion
Earth.Magnetosphere.Magnetotail
ObservedRegion
Heliosphere.NearEarth
Parameter #1
Name
Count rates
Description

Count rates of electrons and protons from each of two electrostatic analyzers, each of six detectors per analyzer, and each of 8 voltage steps for each 19.2 sec cycle

Caveats
Occasionally (rarely?), the instrument was operated in a manual mode, when the cycle was 2.4 sec and voltages were not swept.
Cadence
PT19S
Units
counts per 1.2 sec
Structure
Size
2 6 8
Description

2 for electrostatic analyzers A and B, 6 for the 6 detector per electrostatic analyzer, 8 for the voltage steps per cycle.

Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
Counts
EnergyRange
Low
40
High
20000
Units
eV