12 Matching Results

Search Results

Results: 1 - 12
open access

Low temperature absorption spectra and energy levels of HoF$sub 3$ in the regions 21625 cm$sup -1$ to 21360 cm$sup -1$ and 26160 cm$sup -1$ to 25900 cm$sup -1$

Description: Thesis. The optical absorption spectra of Ho/sup 3+/ in the rare earth salt HoF/sub 3/ is studied. Such optical region studies (visible radiation) are easily performed with standard light sources and optical arrangements. Since the energy range of visible light coincides with the excitation energy range for a number of electronic transitions within the rare earth salts, the studies theoretically provide considerable information about rare earth electronic energy levels. Data are compiled for th… more
Date: April 1, 1974
Creator: Blinde, D.R.
Partner: UNT Libraries Government Documents Department
open access

Interphase phenomena and the condensation of liquid metal vapors. The condensation mechanism of nitrogen tetroxide vapor

Description: Thesis. Submitted by J. Lorrain. Theoretical analyses of interphase processes involving vapors and liquids are presented. Monoatomic and reacting vapors were considered in situations such as condensation, evaporation and heat transfer between the vapor and its liquid. These developments are believed to be the most accurate to date in describing such processes. The implications of the presence of diatomic and heavier naolecules in liquid metal vapors in their condensation heat transfer are discu… more
Date: April 30, 1974
Creator: Larrain, J. & Bonilla, C.F.
Partner: UNT Libraries Government Documents Department
open access

Application of Monte Carlo criticality calculations to the Ames Laboratory Research Reactor

Description: >Thesis. The modeling of the Ames Laboratory Research Reactor core region and the input required to utilize the Monte Carlo computer code KENO for criticality calculations are described. Reactivity calculations in terms of k- effective were made for various reactor configurations and compared to measurements made on the actual reactor. (16 references) (auth)
Date: April 1, 1974
Creator: Hull, D.L.
Partner: UNT Libraries Government Documents Department
open access

Specific heat measurements at the spin-reorientation transition in YbFeO$sub 3$

Description: Thesis. The specific heat was measured from 2.55 to 15.7 deg K, first with no external magnetic field, and then with magnetic fields along the c-axis and a-axis of intensity of 1000, 3000, and 5800 Oe. Two specific heat anomalies were observed: a Schottky anomaly caused by the ground state exchange splitting of the Yb/sup 3+/, and spin reorientation of the Fe sublattice. (DLC)
Date: April 30, 1974
Creator: Sjolander, G W
Partner: UNT Libraries Government Documents Department
Back to Top of Screen