Can We Determine the Grain Composition of the
Interstellar Medium with Astro E2 ?
Julia C. Lee, Bruce Ravel (NRL)
Harvard Center for Astrophysics
60 Garden Street, MS70
Cambridge, MA 02138
I will discuss the ability of the Astro E2 XRS to directly
probe the grain composition of the ISM. Using experimental data
taken at the National Synchrotron Light Source at Brookhaven
National Laboratory, I will discuss our current prospects for
(1) distinguishing gas from dust phase absorption, and (2) determining
the chemical composition of interstellar grains, through the
details of X-ray absorption fine structure.