Accession Number : ADA295030

Title :   Multilayer Optics for Soft X-Rays.

Descriptive Note : Final technical rept. 1 Apr 93-30 Sep 94,

Corporate Author : ARIZONA UNIV TUCSON

Personal Author(s) : Falco, Charles M. ; Slaughter, Jon M.

PDF Url : ADA295030

Report Date : 15 NOV 1994

Pagination or Media Count : 8

Abstract : We have shown that high quality Be films may be grown on alpha-A12O3 Si( 111 ) and Ge( 111 ) Consistent with the relative lattice mismatches, films grown on Si( 111) are of higher quality than those grown on alpha-A12O3, and those grown on Ge(111) are of the highest quality. The epitaxial Be films grown on Ge during this grant period are the best quality Be films that we or anyone else have ever produced. Growth of these high quality films is a significant step toward single crystal heterostructures containing Be. Such Be-containing structures may he useful, not only in EUV optics, but also in IR optics electronic devices, and studies of thin-film superconductivity. We have been successful in growing epitaxial Co-on-Be, and Ge-on-Be, but not in making Co/Be or Ge/Be superlattices. In both cases the problem is related to limitations of our equipment. To pursue this work further would require an upgrade to our MBE apparatus. Our very recent successes with sputter-deposited Y- and B4C-based multilayers show that there is still much to he gained by studying and (optimizing the growth of carefully chosen new material pairs. jg

Descriptors :   *OPTICS, *SILICON, *SOFT X RAYS, *BERYLLIUM, *GERMANIUM, *COBALT, OPTICAL EQUIPMENT, LAYERS, MATERIALS, COMPOSITE MATERIALS, CRYSTAL LATTICES, STRUCTURES, SUPERLATTICES, THIN FILMS, FILMS, ELECTRONIC EQUIPMENT, SINGLE CRYSTALS, EPITAXIAL GROWTH, CARBIDES, MOLECULAR BEAMS, QUALITY, ALUMINUM OXIDES, BORON, INFRARED SPECTRA, SUPERCONDUCTIVITY, YTTRIUM.

Subject Categories : Optics
      Inorganic Chemistry
      Physical Chemistry
      Crystallography
      Electricity and Magnetism
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE