Highly Ionized Sodium X-ray Line Emission from the Solar Corona and the Abundance of Sodium

K. J. H. Phillips, K. M. Aggarwal, E. Landi +1

{The \ion{Na}{x} X-ray lines between 10.9 and 11.2~Å have attracted little attention but are of interest since they enable an estimate of the coronal abundance of Na to be made. Th…