Figure 2.1 Schematic of Setup Phase I

Figure 2.2 Detail of Laser Vaporization Region

Figure 2.3 Schematic of Setup Phase II

Figure 3.1 Silver Mass Spectrum at 235nm

Figure 3.2 Silver•Nitrogen Mass Spectrum

Figure 3.3 Photoionization Efficiency Curves

Figure 3.4 Experimental Silver Cluster Ionization Potentials

Figure 3.5 Comparison of Ag, Cu and Na 'Intrinsic' IP's

Figure 3.6 Ionization Potentials of Ni and Nb Clusters

Figure 3.7 Comparison of Experimental and Theoretical CNDO IP's

Figure 4.1 Comparison of Experimental and Spherical Model IP's

Figure 4.2 Sphere and Cube Axis Distortions

Figure 4.3 Splitting Due to Prolate Potential

Figure 4.4 IP's of Metal Sphere versus Ellipsoidal Distortion Model

Figure 4.5 Experimental and Ellipsoidal IP's (1-35)

Figure 4.6 Experimental and Ellipsoidal IP's (34-59)

Figure 4.7 Experimental and Ellipsoidal IP's (58-100)

Figure 4.8 Experimental and Ellipsoidal IP's Image Charge Corrected

Figure 4.9 Experimental and Ellipsoidal IP's 'Spill-Out' Corrected

Figure 4.10 Large Silver Cluster Mass Spectra

Figure 4.11 Ellipsoidal Axes (1-34)

Figure 4.12 Ellipsoidal Axes (34-58)

Figure 4.13 Ellipsoidal Axes (58-100)

Figure 4.14 Comparison of Ellipsoidal Distortions, Ag vs. Na

Figure 4.15 Potential Energy Surface for 8 Electron Model

Figure 4.16 Potential Energy Surface for 15 Electron Model

Figure 4.17 Potential Energy Surface for 21 Electron Model

Figure 4.18 IP's of Local and Global Minimum Geometries

Figure 5.1 Energy Levels in Transition State Theory

Figure 5.2 Calculated ab initio Fragmentation Energies for Small Silver Clusters

Figure 5.3 Surface Atoms and Bonds in a Compact Cluster

Figure 5.4 Shifted Maxwell-Boltzmann Distribution

Figure 5.5 Ag9+ Photofragmentation Mass Spectrum

Figure 5.6 Geometries for Ag7+, Ag8+, and Ag9+

Figure 5.7 Microcanonical Lifetimes for Ag9+ Fragmentation

Figure 5.8 Rate of Fragmentation of Ag9+ and Ag8+

Figure 5.9 Time Dependence of Ag9+ Fragmentation from the Model

Figure 5.10 Ag11+ Photofragmentation Mass Spectrum

Figure 5.11 Ag17+ Photofragmentation Mass Spectrum

Figure 5.12 Ag18+ Photofragmentation Mass Spectrum

Figure 5.13 Ag19+ Photofragmentation Mass Spectrum

Figure 5.14 Required Excitation Energy for Ag3-Ag60

Figure 5.15 Fragmentation Rates for Ag4-Ag6

Figure 5.16 Fragmentation Rates for Ag7-Ag9

Figure 5.17 Fluence Dependence of Ag11+ and Fragments

Figure 5.18 Fluence Dependence of Ag9+, Ag11+ and Ag12+ at 308nm

Figure 6.1 Compact Cluster Structures

Figure 6.2 Density of State in 13 Atom Hückel Cluster

Figure 6.3 Four Atom Types in Icosahedral Packing

Figure 6.4 Density of States for 923 Atom Icosahedral Cluster

Figure 6.5 Density of States for 1415 Atom Icosahedral Cluster vs. Energy

Figure 6.6 Density of States for 1415 Atom Icosahedral Cluster vs. Atoms