内日冕的绿线强度分布研究

he corona is a key region of solar atmospheric activity,and the source of&nbsp;solar-terrestrial space weather.Limited by observation,research on the plasma structure&nbsp;and magnetic field state of the lower coronal atmosphere is still very lacking, and&nbsp;there are few international studies on the brightness stratification of the lower coronal&nbsp;atmosphere in the visible light band.In this paper,the coronal green line (FeXIV 5303 &Aring;)<br />observation data of Lijiang coronagraph YOGIS is used to analyze the bright structure&nbsp;and mid-coronal loops in the inner coronal region (1.03R-1.25R) effectively.By fitting&nbsp;the exponential decay of the intensity of the bright structures at the radial height of&nbsp;the sun,comparing these fitting results,it is found that the decay index of the static&nbsp;inner coronal loops obtained is around a fixed&nbsp; value.Then,the more obvious coronal&nbsp;loops are extracted,and by performing the same exponential fitting on the intensities&nbsp;of different heights,the obtained decay index is also relatively similar to that of the&nbsp;bright structure,which provides a reference for further study of the evolution of physical&nbsp;parameters in the corona.