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Charge-Energy-Mass Spectrometer(CHEM)

NSSDCA ID: 1984-088A-03

Mission Name: AMPTE/CCE
Principal Investigator:Prof. George Gloeckler


The instrument consisted of an entrance collimator and electrostatic analyzer section followed by a time-of-flight and total-energy-measurement section floating at a 30 kV acceleration potential. The energy range covered was from 1 to 300 keV/Q, with a geometric factor of 2.E-3 sq cm-sr and 32-sector angular resolution. Energy resolution was 5 to 18%, and all charge states and isotopes of H and He, the charge states of Li, and the major elements and charge states up to and including Fe were resolved. For more details, see G. Gloeckler et al., IEEE Transactions on Geoscience and Remote Sensing, v. GE-23, p. 234, 1985.

Alternate Names

  • CHEM

Funding Agency

  • NASA-Office of Space Science (United States)


  • Space Physics: Magnetospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Prof. George GloecklerLead InvestigatorUniversity of
Dr. Berend WilkenOther InvestigatorMax-Planck-Institut fur Aeronomie
Dr. Dieter K. HovestadtOther InvestigatorMax-Planck-Institut fur Extraterrestrische Physik
Dr. Fred M. IpavichOther InvestigatorUniversity of
Dr. Gerhard KremserOther InvestigatorMax-Planck-Institut fur Aeronomie
Dr. Wolfgang StudemannOther InvestigatorMax-Planck-Institut fur Aeronomie
Dr. Douglas C. HamiltonOther InvestigatorUniversity of
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