The phrase "afternoon sectors" is correct and usable in written English.
It can be used in contexts related to scheduling, business operations, or discussions about specific time periods during the afternoon.
Example: "The team will focus on the afternoon sectors to maximize productivity before the end of the day."
Alternatives: "afternoon shifts" or "afternoon divisions".
The background state of plasma at times of wave occurrence is significantly different between the forenoon and afternoon sectors.
Ground spectra are plotted separately for stations in the morning and afternoon sectors (top and third panels).
Therefore, the ionospheric currents are the only candidates that could be responsible for the observed differences in the residual field in the morning and afternoon sectors.
This difference in wave duration between the forenoon and afternoon sectors would be due to the difference in the background plasma state.
L-mode waves were observed at auroral oval stations in both morning (FCC and PBQ) and afternoon sectors (NAQ, LRV and TRO), though the spectral density is smaller in the afternoon sector.
The latitudinal location of Maitri is well beyond the focus of the Sq current system, and, hence, experiences the westward limb of the Sq current loop during daytime, peaking near local noon; and negative-positive bipolar variations in the D-component are due to the meridional currents flowing in the morning and afternoon sectors.
Global ion temperature distributions in the afternoon sector for different seasons are investigated during the solar maximum year of 2000.
An enhanced TEC band forms in the afternoon sector, goes through the cusp region, and enters the polar cap.
At the end of the main phase, these stations registered a sharp foF2 increase in the afternoon sector.
The temperature crests in the winter hemisphere are also noticed in the afternoon sector but have a smaller magnitude than those in the morning sector.
The Polar spacecraft, located in the southern hemisphere afternoon sector, sunward of TC-1, observes a persistent boundary layer with no obvious signature of boundary waves.
