Photoemission and electrostatic potentials on the dayside lunar surface in the terrestrial magnetotail lobes. Journal Article uri icon

Overview

abstract

  • Despite the need to accurately predict and assess the lunar electrostatic environment in all ambient conditions that the Moon encounters, photoemission and electrostatic potentials on the dayside lunar surface in the terrestrial magnetotail lobes remain poorly characterized. We study characteristics and variabilities of lunar photoelectron energy spectra by utilizing Acceleration, Reconnection, Turbulence, and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS) and Apollo measurements in combination with the Flare Irradiance Spectral Model (FISM). We confirm that the photoelectron spectral shapes are consistent between ARTEMIS and Apollo and that the photoelectron flux is linearly correlated with the FISM solar photon flux. We develop an observation-based model of lunar photoelectron energy distributions, thereby deriving the current balance surface potential. The model predicts that dayside lunar surface potentials in the tail lobes (typically tens of volts) could increase by a factor of 2 - 3 during strong solar flares.

publication date

  • June 16, 2017

has restriction

  • green

Date in CU Experts

  • March 30, 2021 3:37 AM

Full Author List

  • Harada Y; Poppe AR; Halekas JS; Chamberlin PC; McFadden JP

author count

  • 5

Other Profiles

International Standard Serial Number (ISSN)

  • 0094-8276

Additional Document Info

start page

  • 5276

end page

  • 5282

volume

  • 44

issue

  • 11