U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: James E. Maslar (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 51 - 70 of 70

An Investigation of Particle Dynamics in a Rotating Disk Chemical Vapor Deposition Reactor

February 1, 2003
Author(s)
D M. Kremer, R W. Davis, Elizabeth F. Moore, James E. Maslar, Donald R. Burgess Jr., S H. Ehrman
This paper describes a numerical model for the nucleation, growth and transport of gas phase particles formed during the chemical vapor deposition (CVD) of epitaxial silicon from silane. This model has been constructed for use with the Sandia SPIN code

Electrical and Optical Properties of GaN/Al 2 O 3 Interfaces

December 1, 2002
Author(s)
D C. Look, R L. Jones, X L. Sun, L J. Brillson, J W. Ager, S S. Park, J H. Han, R J. Molnar, James E. Maslar
Hall-effect, photoluminescence (PL), cathodoluminescence (CL), and Raman scattering measurements have been used to characterize the Ga (top) and N (bottom) faces of freestanding GaN layers grown by hydride vapor phase epitaxy on Al2O3. The material near

In Situ Raman Spectroscopic Investigation of Stainless Steel Hydrothermal Corrosion

September 1, 2002
Author(s)
James E. Maslar, Wilbur S. Hurst, Walter J. Bowers Jr., Jay H. Hendricks
In situ Raman spectroscopy was employed to investigate corrosion of 304L stainless steel in air-saturated water at a pressure of 25.2 Mpa and temperatures up to 496 C in an optically accessible flow cell. The steel also was characterized ex situ with Raman

In Situ Raman Spectroscopic Investigation of Nickel Hydrothermal Corrosion

March 1, 2002
Author(s)
James E. Maslar, Wilbur S. Hurst, Walter J. Bowers Jr., Jay H. Hendricks, M I. Aquino
A nickel coupon was exposed to air-saturated water at a pressure of 25.4 MPa and temperatures ranging from 21 C to 460 C in an optically accessible flow cell. In situ Raman spectra were collected at a number of temperatures as the coupon was heated and

Optical Flow Cell and Apparatus for Solubility, Salt Deposition and Raman Spectroscopic Studies in Aqueous Solutions Near the Water Critical Point

February 1, 2002
Author(s)
Wilbur S. Hurst, M S. Hodes, Walter J. Bowers Jr., Vern E. Bean, James E. Maslar, P Griffith, K A. Smith
A flow cell fitted with large diameter optical ports suitable for visual observation and Raman spectroscopic studies of aqueous solutions to temperatures of 500 C and pressures to 25 MPa is described. The cell uses commercially available compression

In Situ Raman Spectroscopic Investigation of Chromium Surfaces Under Hydrothermal Conditions

August 1, 2001
Author(s)
James E. Maslar, Wilbur S. Hurst, Walter J. Bowers Jr., Jay H. Hendricks, M I. Aquino, Igor Levin
Three chromium coupons were exposed to air-saturated water at pressures of ca. 25 MPa and temperatures up to 545 C in an optically accessible flow cell. In situ Raman spectra were collected at different temperatures as the coupons were heated and then

The Raman Spectra of Cr 3 O 8 and Cr 2 O 5

March 1, 2001
Author(s)
James E. Maslar, Wilbur S. Hurst, Terrell A. Vanderah, Igor Levin
The Raman spectra of polycrystalline Cr 3O 8 and Cr 2O 5 powders were measured. The powders were prepared by thermal decomposition of CrO 3 under flowing oxygen. Their composition was verified with x-ray diffraction. Raman spectra were excited with both