Data Description

This page summarizes information about the selected resource and its origin based on SPASE metadata.

Table of Contents

  1. Product
  2. Repositories
  3. Instrument
  4. ObservatoryObservatories
  5. Persons

SPASE version 2.2.2

Numerical Data Product: IMP 8 GME 30-min energetic particle rates and fluxes

Resource ID
spase://VEPO/NumericalData/IMP8/GME/PT30M Get XML
Name
IMP 8 GME 30-min energetic particle rates and fluxes
Description

This CDAWeb-accessible data set contains 30-minute, spin-averaged count rates and fluxes, and their statistical uncertainties, of energetic particles from the IMP8 GME experiment. Included are fluxes of: protons in 30 energy bins from 0.88-1.15 to 327-485 MeV; alpha particles in 21 energy bins from 1.14-1.36 to 63.3-81.0 MeV/n; and 0.3-18 MeV electrons. Also included are count rates for each of 7 sensors and for 11 multi-sensor coincidence modes. Proton and alpha particle fluxes, for every other energy bin, are given at the FTPBrowser and MSSP interfaces identified below.

Additional information
NSSDC Master Catalog
CDAWeb Skeleton Table
Acknowledgement

Acknowledge Robert E. McGuire, the PI.

Contact
Role Person
1. Principal investigator Dr. Robert E. McGuire Get XML
Release date
2009-09-16 00:00:00
Repository #1
Name
SPDF Get XML
Availability
Online
Access rights
Open
URL
FTP access to files at SPDF

ftp access to 6-month CDF files

HTTP access to files at SPDF

In CDF via HTTP from SPDF

CDAWeb

Subset, plot and list via CDAWeb; ASCII output option

Format
CDF
File size
200 MB
Acknowledgement

Acknowledge Robert E. McGuire, the PI, and CDAWeb

Repository #2
Name
SPDF Get XML
Availability
Online
Access rights
Open
URL
FTPBrowser

Subset, plot and list H and He fluxes

Multi-Source Spectral Plot

Spectral plots and power law fits for arbitrary durations for H and He fluxes

Format
Text
Acknowledgement

Acknowledge Robert E. McGuire, the PI, SPDF and the service used

Instrument
Solar and Cosmic-Ray Particles Get XML
Measurement type
Energetic particles
Temporal description
Start date
1973-11-01 00:00:00
Stop date
2001-10-26 00:00:00
Cadence
30 minutes
Observed regions
Heliosphere.NearEarth

Parameters

Parameter #1

Name
Proton fluxes
Description

Spin-integrated fluxes of protons, at 30-min resolution, in 30 energy bins ranging from 0.88-1.15 MeV to 327-485 MeV, and statistical uncertainties in these fluxes

Cadence
30 minutes
Units
1/sec-cm**2-ster-MeV
Structure
Size
30 2
Description

Array of fluxes and corresponding uncertainties at 30 energy windows

Particle type
Proton
Quantity
Number flux
AtomicNumber
1
Energy range
Low energy
0.88
High energy
485
Units
MeV

Parameter #2

Name
Alpha particle fluxes
Description

Spin-integrated fluxes of alpha particles, at 30-min resolution, in 21 energy bins ranging from 1.14-1.36 MeV/n to 63.3-81.0 MeV/n, and statistical uncertainties in these fluxes

Cadence
30 minutes
Units
1/sec-cm**2-ster-MeV/n
Structure
Size
21 2
Description

Array of fluxes and corresponding uncertainties at 21 energy windows

Particle type
AlphaParticle
Quantity
Number flux
AtomicNumber
2
Energy range
Low energy
1.14
High energy
81
Units
MeV/n

Parameter #3

Name
Electron fluxes
Description

Spin-integrated fluxes of 3-18 MeV electrons, at 30-min resolution, and statistical uncertainties in these fluxes

Cadence
30 minutes
Units
1/sec-cm**2-ster-MeV
Structure
Size
2
Description

Array of one flux and its corresponding uncertainty

Particle type
Electron
Quantity
Number flux
Energy range
Low energy
3
High energy
18
Units
MeV

Parameter #4

Name
Electron background fluxes
Description

Spin-integrated fluxes considered as background for 3-18 MeV electron flux, at 30-min resolution, and statistical uncertainties in these fluxes

Cadence
30 minutes
Units
1/sec-cm**2-ster-MeV
Structure
Size
2
Description

Array of one flux and its corresponding uncertainty

Particle type
Electron
Quantity
Number flux

SPASE version 2.0.0

Instrument: Solar and Cosmic-Ray Particles

Instrument ID
spase://SMWG/Instrument/IMP8/MCGUIRE Get XML
Name
Solar and Cosmic-Ray Particles
Description

The GSFC cosmic-ray experiment was designed to measure energy spectra, composition, and angular distributions of solar and galactic electrons, protons, and heavier nuclei up to Z=30. Three distinct detector systems were used. The first system consisted of a pair of solid-state telescopes that measured integral fluxes of electrons above 150, 350, and 700 keV and of protons above .05, .15, .50, .70, 1.0, 1.2, 2.0, 2.5, 5.0, 15, and 25 MeV. Except for the .05-MeV proton mode, all counting modes had unique species identification. The second detector system was a solid-state dE/dx vs E telescope that looked perpendicular to the spin axis. This telescope measured Z=1 to 16 nuclei with energies between 4 and 20 MeV/nucleon. Counts of particles in the 0.5- to 4-MeV/nucleon range, with no charge resolution, were obtained as counts in the dE/dx sensor but not in the E sensor. The third detector system was a three-element telescope whose axis made an angle of 39 deg with respect to the spin axis. The middle element was a CsI scintillator, while the other two elements were solid-state sensors. The instrument responded to electrons between 2 and 12 MeV and to Z=1 to 30 nuclei in the energy range 20 to 500 MeV/nucleon. For particles below 80 MeV, this instrument acted as a dE/dx vs E detector. Above 80 MeV, it acted as a bidirectional triple dE/dx vs E detector. Flux directionality information was obtained by dividing certain portions of the data from each detector into eight angular sectors. For further details, see B. J. Teegarden et al., Astrophys. J., v. 202, p. 815, 1975.

Additional information
NSSDC's Master Catalog

Information about the Solar and Cosmic-Ray Particles experiment on the IMP-J mission.

Contact
Role Person
1. Principal investigator Dr. Robert E. McGuire Get XML
Release date
2009-05-20 21:10:02
Instrument type
Energetic Particle Instrument
Investigation name
Solar and Cosmic-Ray Particles on IMP-J
Observatory
IMP 8 Get XML

SPASE version 2.2.0

Observatory: IMP 8

Observatory ID
spase://SMWG/Observatory/IMP8 Get XML
Name
IMP 8
Alternate name
IMP-J
Explorer 50
1973-078A
Description

IMP 8 (IMP-J or Explorer 50), the last satellite of the IMP series, was a drum-shaped spacecraft, 135.6 cm across and 157.4 cm high, instrumented for interplanetary and magnetotail studies of cosmic rays, energetic solar particles, plasma, and electric and magnetic fields. Its initial orbit was more elliptical than intended, with apogee and perigee distances of about 45 and 25 earth radii. Its eccentricity decreased after launch. Its orbital inclination varied between 0 deg and about 55 deg with a periodicity of several years. The spacecraft spin axis was normal to the ecliptic plane, and the spin rate was 23 rpm. The data telemetry rate was 1600 bps. The spacecraft was in the solar wind for 7 to 8 days of every 12.5 day orbit. Telemetry coverage was 90% in the early years, but only 60-70% through most of the 1980's and early 1990's. Coverage returned to the 90% range in the mid to late 1990's. The objectives of the extended IMP-8 operations were to provide solar wind parameters as input for magnetospheric studies and as a 1-AU baseline for deep space studies, and to continue solar cycle variation studies with a single set of well-calibrated and understood instruments. In October, 2001, IMP 8 was terminated as an independent mission. Telemetry acquisition resumed after about three months at Canberra only (30-50% coverage), as an adjunct to the Voyager and Ulysses missions. As of August 2005 IMP 8 continued in this mode.

Additional information
IMP-8 Project Information
NSSDC's Master Catalog

Information about the IMP-J mission

Contact
Role Person
1. Project scientist Dr. Robert E. McGuire Get XML
Release date
2010-09-27 18:45:12
Prior ID
spase://vspo/observatory/63
Observatory group
IMP Spacecraft Series Get XML
Location
Region
Earth.Magnetosheath
Earth.Magnetosphere.Magnetotail
Heliosphere.NearEarth

SPASE version 2.2.0

Observatory: IMP Spacecraft Series

Observatory ID
spase://SMWG/Observatory/IMP Get XML
Name
IMP Spacecraft Series
Description

The IMP spacecraft series. Prelaunch, the 10 IMP's were called IMP's A-J. 8 of them were intended for geocentric orbits (A-C, F-J) and 2 for selenocentric orbits (D,E). Prelaunch, the latter two were also called Anchored IMPs (AIMPs) A and B. After launch, the 8 intended for geocentric were also called IMPs 1-8 and the 2 intended for lunar orbit were called AIMP 1 and 2. Only IMP E = AIMP B = AIMP 2 achieved lunar orbit; IMP D = AIMP A = AIMP 1 went into a geocentric orbit. The mapping of prelaunch IMP letters to postlaunch Explorer numbers and IMP numbers was

IMP (prelaunch) IMP (postlaunch) Explorer
A 1 18
B 2 21
C 3 28
D 33
E 35
F 4 34
G 5 41
H 7 47
I 6 43
J 8 50

Contact
Role Person
1. Metadata contact Jan Merka Get XML
Release date
2010-10-06 18:37:16
Location
Region
Earth.Magnetosphere
Heliosphere.NearEarth

SPASE version 2.2.0

Person: Dr. Robert E. McGuire

Name
Dr. Robert E. McGuire
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
mcguire@mail630.gsfc.nasa.gov
Phone
+1 301 286 7794
Person ID
spase://SMWG/Person/Robert.E.McGuire Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Ms. Tamara J. Kovalick

Name
Ms. Tamara J. Kovalick
Organization
GSFC-Code 672
Email
Tamara.J.Kovalick@nasa.gov
Phone
+1-301-286-9422
Person ID
spase://SMWG/Person/Tamara.J.Kovalick Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Mr. Robert M. Candey

Name
Mr. Robert M. Candey
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
robert.m.candey@nasa.gov
Phone
1-301-286-6707
Person ID
spase://SMWG/Person/Robert.M.Candey Get XML
Release date
2010-08-05 17:35:47

SPASE version 2.2.0

Person: Jan Merka

Name
Jan Merka
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
jan.merka@nasa.gov
Phone
+1 301 286 8751
Person ID
spase://SMWG/Person/Jan.Merka Get XML
Release date
2010-08-05 17:35:46

SPASE version 1.3.0

Repository: SPDF

Repository ID
spase://SMWG/Repository/NASA/GSFC/SPDF Get XML
Name
SPDF
Description

Space Physics Data Facility

Additional information
SPDF

Space Physics Data Facility

Contact
Role Person
1. General contact Ms. Tamara J. Kovalick Get XML
2. Technical contact Mr. Robert M. Candey Get XML
3. Project scientist Dr. Robert E. McGuire Get XML
Release date
2008-08-26 21:02:30
Prior IDs
spase://vspo/repository/61
spase://SMWG/Repository/SPDF
Access URL