E
E.P. Donovan
Researcher at United States Naval Research Laboratory
Publications - 36
Citations - 394
E.P. Donovan is an academic researcher from United States Naval Research Laboratory. The author has contributed to research in topics: Ion beam-assisted deposition & Thin film. The author has an hindex of 11, co-authored 36 publications receiving 390 citations.
Papers
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Journal ArticleDOI
Near infrared rugate filter fabrication by ion beam assisted deposition of Si((1-x))N(x) films.
TL;DR: Single-band reflection filters of the rugate design of high peak optical density were fabricated under computer control using a quartz crystal oscillator shielded from the beam to monitor the silicon evaporation and three suppressed Faraday cups tomonitor the ion beam current.
Journal ArticleDOI
Fundamentals of ion‐beam‐assisted deposition. I. Model of process and reproducibility of film composition
TL;DR: In this article, a simple model is presented which relates the film composition x to the measured beam current density JF, the vapor impingement rate Q, and the chamber pressure p. The model is examined as a potential source of both systematic and random deviations of the data from the model.
Journal ArticleDOI
Fundamentals of ion‐beam‐assisted deposition. II. Absolute calibration of ion and evaporant fluxes
TL;DR: In this paper, a method is given to obtain an absolute calibration of the ion and evaporant fluxes in an ion-beam-assisted deposition system based upon a Kaufman ion source and an electron beam vapor source.
Journal ArticleDOI
Characterization of a 3 cm Kaufman ion source with nitrogen feed gas
TL;DR: In this paper, a commercial high current dual grid optics 3 cm ion source was purchased for use in a nitrogen ion beam assisted, electron beam evaporation (IAD) system, and the interrelationships of beam current, beam spatial profile measurements, chamber pressure, accelerator voltage, beam voltage (500, 1000 and 1500 V), discharge voltage, and filament current were reported.
Journal ArticleDOI
Ion-beam-assisted deposition of molybdenum nitride films
TL;DR: In this paper, a series of molybdenum nitride films was synthesized by electron beam evaporative deposition, with simultaneous bombardment by nitrogen ions from a Kaufman ion source, and the film compositions and structures were determined using Rutherford backscattering spectrometry and X-ray diffraction respectively.