Accession Number : AD0475378

Title :   TRANSMISSION SPUTTERING RATIO IN MONOCRYSTALLINE SILVER FOILS BY HIGH ENERGY PROTONS.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Horn, Leslie J. ; Stocking, Sigurd I.

Report Date : 1965

Pagination or Media Count : 55

Abstract : The transmission sputtering ratio for protons in monocrystalline silver foils was determined over the energy range from 250 KeV to 700 KeV and found to be approximately .01 for the (111) orientation. The sputtering ratio was found to be an insensitive function of proton energy and target thickness. Target films were prepared by epitaxial growth on the (111) cleavage face of lithium fluoride substrates, and were approximately 98% oriented. Film thickness varied from 11,300 to 30,600 A. Sputtered silver was collected on pyrolitic graphite, irradiated in a thermal neutron flux of 4.5 x 10 to the 10th power neutron/sq cm/sec and detected by computer analysis of the resulting decay curves. Preferential ejection of protons and silver atoms along low index directions of the targets and radiation damage effects were observed. (Author)

Descriptors :   *PROTONS), (*SPUTTERING, (*SILVER, SPUTTERING), VACUUM APPARATUS, FOILS(MATERIALS), METAL CRYSTALS, SINGLE CRYSTALS, NEUTRON FLUX, THERMAL NEUTRONS, DAMAGE, RADIATION EFFECTS, METAL FILMS, DEPOSITION, SUBSTRATES, PYROLYTIC GRAPHITE, EPITAXIAL GROWTH.

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE