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Effects of non-adiabatic coupling in photofragmentation of CO(2) using resonance enhanced multiphoton ionization techniques.
(1997)
We observed Resonance Enhanced Multiphoton Ionization (REMPI) spectra of $nf\sp2\Pi\sb{\Omega}$ Rydberg states of $CO\sb2$ for $n=4$ to 8. In addition, we also did a laser power dependence study of these states for $n=5$ ...
A 2-D model for the O'Connell effect in W Ursae Majoris systems /
(1999)
The light curves of W Ursae Majoris stars often show asymmetries which are called the O'Connell Effect. Traditionally, these asymmetries were measured by calculating the magnitude difference of the peak intensity at each ...
The abundance and chemical evolution of nitrogen in spiral galaxies.
(1998)
The character of nitrogen processing in spiral galaxies is studied in this dissertation. Of particular interest are questions of how the (N/O) ratio changes over time as a result of perturbations of environmental parameters, ...
Observations of x-rays produced by strong electric fields in thunderstorms.
(1997)
A balloon-borne x-ray spectrometer was developed to fly on free balloons into thunderstorms in order to test hypotheses that strong electric-fields could accelerate cosmic-ray secondary electrons and produce bremsstrahlung ...
Search for charged Higgs bosons in top quark pair decays at D-zero.
(1999)
We perform a search for a charged Higgs Boson (H +) lighter than the top quark, in the decay of top quark pairs. The search assumes no couplings to H+ except the Standard Model (SM) couplings. The modified Higgs sector of ...
Impurity scattering in a two-dimensional electron gas subject to a perpendicular magnetic field.
(1998)
We have calculated the Landau level (projected) Green's functions and the density of states of a two-dimensional electron gas in a perpendicular magnetic field as effected by impurity scattering using several different ...
Molecular beam epitaxy and characterization of indium antimonide/aluminum indium antimonide heterostructures.
(1998)
Two-dimensional electron systems were realized in InSb quantum wells with Al0.09In0.91Sb barrier layers delta-doped with Si. Measured electron mobilities in multiple quantum well structures grown on GaAs(001) substrates ...
Prospecting for elements: Galactic halo planetary nebulae abundances and Virgo spiral galaxy color profiles.
(1998)
Near-infrared Virgo cluster spiral colors. Near-infrared (NIR) surface photometry in J (1.2$\mu$m), H (1.6$\mu$m) and K (2.2$\mu$m) have been obtained for a sample of Virgo cluster spirals; NGC4321, NGC4303, NGC4571, ...
Measurement of the angular distribution of electrons from W boson decays at D-zero.
(1999)
We present a measurement of the electron angular distribution parameter a2 in W→ en events using data collected by the DO detector during the 1994--1995 Tevatron run. We compare our results with next-to-leading ...
Non-local thermodynamic equilibrium spectrum synthesis of type Ia supernovae.
(1997)
This thesis is broken down into 4 major sections, each highlighting a different way with which to use spectrum synthesis to analyze SNe Ia. Chapters 2 and 3 look at normal SNe Ia and their potential use as distance indicators ...