Data Description

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

Table of Contents

  1. Product
  2. Repository
  3. Instrument
  4. Observatory
  5. Persons

SPASE version 2.0.0

Numerical Data Product: Helios 1 E6 (Kunow) Hourly Particle Fluxes

Resource ID
spase://VEPO/NumericalData/Helios1/E6/PT1H Get XML
Name
Helios 1 E6 (Kunow) Hourly Particle Fluxes
Description

Data set records contain fluxes of protons in 5 energy ranges (4-13, 13-27, 27-37, 37-51, >51 MeV), alpha particles in 6 energy ranges (2-4, 4-13, 13-27, 27-37, 37-48, >48 MeV/n), and electrons in 2 ranges (0.3-0.8, 0.8-2.0 MeV). The fluxes are averaged over intervals of approximately one hour. Each "data record" (having ending CR and/or LF) spans 4-5 hours and has 10 time-overlapping segments. Each segment has averaging start and stop times plus words for 13 fluxes and words for the statistical uncertainties in the 13 fluxes. However, most words in a given segment have fill values, such that good values for a given flux (species and energy range) and its uncertainty appear only in a minority of the segments. No spacecraft position information is included. Data are from the E6 experiment on Helios 1.

Additional information
Readme at nssdcftp
Acknowledgement

Please acknowledge the P.I., Horst Kunow at Universitat Kiel

Contact
Role Person
1. Principal investigator Dr. Horst W. Kunow Get XML
Release date
2009-04-01 00:00:00
Repository
Name
SPDF Get XML
Availability
Online
Access rights
Open
URL
nssdcftp
Format
Text
File size
29 MB
Acknowledgement

Please acknowledge the P.I., Horst Kunow at Universitat Kiel and the Space Physics Data Facility at NASA/GSFC

Instrument
Cosmic Ray Particles Get XML
Measurement type
Energetic particles
Temporal description
Start date
1974-12-11 00:00:00
Stop date
1983-12-31 00:00:00
Cadence
1 hour
Observed regions
Heliosphere.Inner
↑

Parameters

Parameter #1

Name
Start and stop times
Description

The start and stop times of the flux averages, each given as four words: year, day of year, hour, minute

Cadence
1 hour
Structure
Size
4 2
Description

The start and stop times of the flux averages, each given as four words: year, day of year, hour, minute. These are given in each of the 10 time segments for each data record

Parameter type
Temporal

Parameter #2

Name
Proton fluxes and uncertainties
Description

Fluxes of protons in 5 energy ranges (4-13, 13-27, 27-37, 37-51, >51 MeV) and associated statistical uncertainties for each flux.

Cadence
1 hour
Units
Particles/m**2_sec_sr_MeV
Structure
Size
5 2
Description

Fluxes of protons in 5 energy ranges (4-13, 13-27, 27-37, 37-51, >51 MeV) and associated statistical uncertainties for each flux. These are given in each of the 10 time segments for each data record. (See general description above.)

Fill value
-0.99999E+04
Particle type
Proton
Quantity
Number flux
Qualifier
Average
Energy range
Low energy
4
High energy
51
Units
MeV

Parameter #3

Name
Alpha particle fluxes and uncertainties
Description

Fluxes of alpha particles in 6 energy ranges (2-4, 4-13, 13-27, 27-37, 37-48, >48 MeV/n) and associated statistical uncertainties for each flux.

Cadence
1 hour
Units
Particles/m**2_sec_sr_MeV/n
Structure
Size
6 2
Description

Fluxes of alpha particles in 6 energy ranges (2-4, 4-13, 13-27, 27-37, 37-48, >48 MeV/n) and associated statistical uncertainties for each flux. These are given in each of the 10 time segments for each data record. (See general description above.)

Fill value
-0.99999E+04
Particle type
AlphaParticle
Quantity
Number flux
Qualifier
Average
Energy range
Low energy
2
High energy
48
Units
MeV/n

Parameter #4

Name
Electron fluxes and uncertainties
Description

Fluxes of electrons in 2 energy ranges (0.3-0.8, 0.8-2.0 MeV) and associated statistical uncertainties for each flux.

Cadence
1 hour
Units
Particles/m**2_sec_sr_MeV
Structure
Size
2 2
Description

Fluxes of electrons in 2 energy ranges (0.3-0.8, 0.8-2.0 MeV) and associated statistical uncertainties for each flux. These are given in each of the 10 time segments for each data record. (See general description above.)

Fill value
-0.99999E+04
Particle type
Electron
Quantity
Number flux
Qualifier
Average
Energy range
Low energy
0.3
High energy
2.0
Units
MeV
↑

SPASE version 2.0.0

Instrument: Cosmic Ray Particles

Instrument ID
spase://SMWG/Instrument/Helios1/E6 Get XML
Name
Cosmic Ray Particles
Description

The objective of the experiment (E6) was to study high-energy, charged, cosmic-ray particles of solar, planetary, and galactic origin in interplanetary space. Protons and alpha particles with energies >1.3 MeV/nucleon, and electrons >0.3 MeV were measured within interplanetary space over the range from 0.3 to 1.0 AU. The instrument, a particle telescope with a 55-deg field of view, consisted of five semiconductor detectors, one sapphire Cerenkov counter, and one scintillation counter, all enclosed by an anticoincidence cylinder. The telescope was calibrated prior to launch using radioactive sources, particle accelerators, and ground-level muons. It measured protons and alpha particles in six channels (1.3-3.3, 3.3-13, 13-27, 27-37, 37-45, and >45 MeV/nucleon) and electrons in five energy channels (0.3-0.8, 0.8-2, 2-3, 3-4, and >4 MeV). For more detail see pp. 253-257 of Raumfahrtforschung, v. 19, n. 5, 1975.

Additional information
NSSDC's Master Catalog

Information about the Cosmic Ray Particle experiment on the Helios-A mission.

Contact
Role Person
1. Principal investigator Dr. Horst W. Kunow Get XML
Release date
2009-05-20 21:10:02
Instrument type
Energetic Particle Instrument
Investigation name
Cosmic Ray Particles Experiment on Helios-A
Observatory
Helios 1 Get XML
↑

SPASE version 2.0.0

Observatory: Helios 1

Observatory ID
spase://SMWG/Observatory/Helios1 Get XML
Name
Helios 1
Alternate name
Helios-A
Description

This spacecraft was one of a pair of deep space probes developed by the Federal Republic of Germany (FRG) in a cooperative program with NASA. Experiments were provided by scientists from both FRG and the U.S. NASA supplied the Titan/Centaur launch vehicle. The spacecraft was equipped with two booms and a 32-m electric dipole. The payload consisted of a fluxgate magnetometer; electric and magnetic wave experiments, which covered various bands in the frequency range 6 Hz to 3 MHz; charged-particle experiments, which covered various energy ranges starting with solar wind thermal energies and extending to 1 GeV; a zodiacal-light experiment; and a micrometeoroid experiment. The purpose of the mission was to make pioneering measurements of the interplanetary medium from the vicinity of the earth's orbit to 0.3 AU. The spin axis was normal to the ecliptic, and the nominal spin rate was 1 rps. The outer spacecraft surface was dielectric, effectively (because of the sheath potential) raising the low-energy threshold for the solar wind plasma experiment to as high as 100 eV. Also, sheath-related coupling caused by the spacecraft antennae produced interference with the wave experiments. The spacecraft was capable of being operated at bit rates from 4096 to 8 bps, variable by factors of 2. While the spacecraft was moving to perihelion, it was generally operated from 64 to 256 bps; and near 0.3 AU, it was operated at the highest bit rate. Because of a deployment failure of one axis of the 32-m, tip-to-tip, dipole antenna, one axis was shorted, causing the antenna to function as a monopole. The major effect of this anomaly was to increase the effective instrument thresholds, and to introduce additional uncertainties in the effective antenna length. Instrument descriptions written by the experimenters were published (some in German, some in English) in Raumfahrtforschung, v. 19, n. 5, 1975.

Additional information
NSSDC's Master Catalog

Information about the Helios-A mission

Contact
Role Person
1. Project scientist Dr. James H. Trainor Get XML
2. Project scientist Dr. Herbert Porsche Get XML
Release date
2009-05-20 20:00:12
Prior ID
spase://vspo/observatory/43
Observatory group
HELIOS
Location
Region
Heliosphere.Inner
↑

SPASE version 2.0.0

Person: Dr. Horst W. Kunow

Name
Dr. Horst W. Kunow
Organization
Universitat Kiel
Person ID
spase://SMWG/Person/Horst.W.Kunow Get XML
↑

SPASE version 2.0.0

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
2008-03-19 00:00:00
↑

SPASE version 2.0.0

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
2007-05-30 19:43:56
↑

SPASE version 2.0.0

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
2007-05-30 15:25:24
↑

SPASE version 2.0.0

Person: Dr. James H. Trainor

Name
Dr. James H. Trainor
Organization
Deceased - formerly at GSFC
Person ID
spase://SMWG/Person/James.H.Trainor Get XML
Release date
2003-10-20 00:00:00
↑

SPASE version 2.0.0

Person: Dr. Herbert Porsche

Name
Dr. Herbert Porsche
Organization
DLR
Phone
+1-49-8153-28-505
Person ID
spase://SMWG/Person/Herbert.Porsche Get XML
Release date
2003-01-31 00:00:00
↑

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
↑