The Absorption of Selenium in the Soft X-Ray Region

Abstract

The absorption of selenium (from 180A to 240A) has been investigated experimentally. The absorption edge near 225A has been resolved into a double edge due to ${M}_{\mathrm{IV}}$ and ${M}_{\mathrm{V}}$ absorption. The separation of these edges is 0.7 ev. A minimum in the absorption is observed at 208A.