Helium, Oxygen, Proton, and Electron (HOPE) Mass Spectrometer for the Radiation Belt Storm Probes Mission
By H. Funsten, R. Skoug, A. Guthrie, E. MacDonald, J. Baldonado, R. Harper, K. Henderson, K. Kihara, J. Lake, B. Larsen and 25 more. Space Science Reviews, 2013
557 citations recorded by the source corpus.
The HOPE mass spectrometer of the Radiation Belt Storm Probes (RBSP) mission (renamed the Van Allen Probes) is designed to measure the in situ plasma ion and electron fluxes over 4π sr at each RBSP spacecraft within the terrestrial radiation belts. The scientific goal is to understand the underlying physical processes that govern the radiation belt structure and dynamics. Spectral measurements for both ions and electrons are acquired over 1 eV to 50 keV in 36 log-spaced steps at an energy resolution ΔEFWHM/E≈15 %. The dominant ion species (H+, He+, and O+) of the magnetosphere are identified using foil-based time-of-flight (TOF) mass spectrometry with channel electron multiplier (CEM) detectors. Angular measurements are derived using five polar pixels coplanar with the spacecraft spin axis, and up to 16 azimuthal bins are acquired for each polar pixel over time as the spacecraft spins. Ion and electron measurements are acquired on alternate spacecraft spins. HOPE incorporates several new methods to minimize and monitor the background induced by penetrating particles in the harsh environment of the radiation belts. The absolute efficiencies of detection are continuously monitored, enabling precise, quantitative measurements of electron and ion fluxes and ion species abundances throughout the mission. We describe the engineering approaches for plasma measurements in the radiation belts and present summaries of HOPE measurement strategy and performance.
Subfields: Astronomy and Astrophysics, Mechanics of Materials
View Paper: https://www.semanticscholar.org/paper/c13020b02d7c5b4d38e9368b5d4ca04108363042
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In Astronomy and Astrophysics
Citations in the corpus
- Particle Dynamics in the Earth's Radiation Belts: Review of Current Research and Open Questions (2020, methodology): “…dependent on the local ion plasma composition (H+, O+, and He+), which is important to accurately compute the wave‐particle interactions, for instance, based on measured local properties such as measured by the HOPE instrument (Funsten et al., 2013; Spence et al., 2013) of the Van Allen Probes.”
- Science Goals and Overview of the Radiation Belt Storm Probes (RBSP) Energetic Particle, Composition, and Thermal Plasma (ECT) Suite on NASA’s Van Allen Probes Mission (2013, background): “In the RBSP-ECT companion papers (Funsten et al. 2013; Blake et al. 2013; Baker et al. 2012), we describe all ECT instruments in great detail and show how the instrument requirements are met economically and efficiently as a suite.”
- Interstellar Mapping and Acceleration Probe (IMAP): A New NASA Mission (2018, methodology): “SWE is based on the heritage Ulysses/SWOOPS (Bame et al. 1983, 1992), ACE/SWEPAM (McComas et al. 1998) and Genesis/GEM (Barraclough et al. 2003) instruments, with updated electronics based on Van Allen Probes/HOPE (Funsten et al. 2013).”