Novel Instrument Techniques to Measure Magnetospheric Ion Composition

Details Novel Instrument Techniques to Measure Magnetospheric Ion Composition Novel Instrument Techniques to Measure Magnetospheric Ion Composition

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm13a0338f&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM13A-0338

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2764 Plasma Sheet, 2774 Radiation Belts, 2794 Instruments And Techniques

Scientific paper

Understanding the variable transport of solar wind and ionospheric plasma through the magnetosphere is critical for global prediction of magnetospheric structure and dynamics, particularly for interpolation of single- point in situ measurements and development of predictive tools for space weather. Measuring the plasmasheet composition (H+, O+, He+, He++) from these variable sources enables understanding the source of the ring current but has seldom been achievable at geosynchronous orbit or in the inner magnetosphere in the past. Two instrument techniques for measuring magnetospheric ion composition at plasma energies and above are presented and compared, with a particular emphasis on mass analysis in an environment with a substantial penetrating radiation background. The first involves using energy deposited in solid state detectors to resolve ion mass by an E/q x E technique. The second identifies ion species by utilizing time-of-flight with coincidence and CEM detectors. The applications of these techniques to different space radiation environments for upcoming missions will be highlighted.

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