Search Results

Advanced search parameters have been applied.
open access

Evaluation of Large Volume SrI2(Eu) Scintillator Detectors

Description: There is an ever increasing demand for gamma-ray detectors which can achieve good energy resolution, high detection efficiency, and room-temperature operation. We are working to address each of these requirements through the development of large volume SrI{sub 2}(Eu) scintillator detectors. In this work, we have evaluated a variety of SrI{sub 2} crystals with volumes >10 cm{sup 3}. The goal of this research was to examine the causes of energy resolution degradation for larger detectors and t… more
Date: November 18, 2010
Creator: Sturm, B. W.; Cherepy, N. J.; Drury, O. B.; Thelin, P. A.; Fisher, S. E.; Magyar, A. F. et al.
Partner: UNT Libraries Government Documents Department
open access

Chemical and Sonochemical Approaches to the Formation of Vo{Sub 2} Films and Vo{Sub 2}-Impregnated Materials

Description: A new chemical and chemical/ultrasonic approach to the preparation of VO{sub 2} films and VO{sub 2}-impregnated bulk materials has been developed. In this approach, a V{sub 2}O{sub 5} sol prepared by quenching is used to coat SiO{sub 2} substrates. The resulting gel-film is heat treated in a reducing atmosphere to form a film identified as VO{sub 2} from the results of X-ray diffraction and both optical and resistivity measurements, which reveal the phase transition characteristic of vanadium d… more
Date: November 1, 1997
Creator: Keppens, V.; Mandrus, D. & Boatner, L. A.
Partner: UNT Libraries Government Documents Department
open access

The Formation of High-Coercivity, Oriented, Nanophase Cobalt Precipitates in Al

Description: Ion-implantation and thermal-processing methods have been used to form nanophase magnetic precipitates of metallic cobalt that are embedded in the near-surface region of single crystals of Al{sub 2}O{sub 3}. The Co precipitates are isolated, single-crystal particles that are crystallographically oriented with respect to the host Al{sub 2}O{sub 3} lattice. Embedded nanophase Co precipitates were formed by the implantation of Co+ at an energy of 140 keV and a dose of 8 x l0{sup 16} ions/cm{sup 2}… more
Date: November 29, 1999
Creator: Honda, S.; Modine, F. A.; Haynes, T. E.; Meldrum, A.; Budai, J. D.; SOng, K. J. et al.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen