NSSDCA ID: 1973-085A-07
Mission Name: Mariner 10This experiment was designed to measure energetic electrons, protons, and alpha particles in the interplanetary medium and in the vicinities of Venus and Mercury. The instrumentation consisted of a main telescope and a low-energy telescope. The main telescope consisted of six co-linear sensors (five silicon detectors and one CsI scintillator) surrounded by a plastic scintillator anti-coincidence cup. One pulse height analysis was performed every 0.33 s, and counts accumulated in each coincidence/anti-coincidence mode were measured every 0.6 s. Particles stopping in the first sensor were protons and alpha particles in the range 0.62--10.3 MeV/nucleon and electrons above ~170 keV. The aperture half angle for this mode was 47 degrees, and the geometric factors were 14 sq cm-sr for electrons and 7.4 sq cm-sr for protons and alpha particles. The telescope aperture half-angle decreased to 32 degrees for coincident counts in the first and third sensors. The low-energy telescope, a two-element (plus anti-coincidence) detector with a 38 degree half angle aperture and a 0.49 sq cm sr geometrical factor, was designed to measure 0.53--1.9 MeV and 1.9--8.9 MeV protons without responding to electrons over a wide range of electron energies and intensities.
Mass: 3.8 kg
Power (avg): 1.6 W
Questions and comments about this experiment can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Mr. James E. Lamport | Co-Investigator | University of Chicago | |
Dr. John A. Simpson | General Contact | University of Chicago | |
Dr. John A. Simpson | Principal Investigator | University of Chicago |