CONTENTS -- Preface -- 1 Probing Orbital Symmetries and Ionization Dynamics of Simple Molecules With Femtosecond Laser Pulses C. D. Lin and X. M. Tong -- 1.1. Introduction -- 1.2. Probing Molecular Orbital Symmetry with Sub-10 fs Laser Pulses -- 1.2.1. Molecular tunneling ionization theory -- 1.2.2. Alignment dependence of tunneling ionization rates and the symmetry of molecular orbitals -- 1.3. Attosecond Molecular Clocks: Time-Resolved Double Ionization Dynamics of H2 and D2 Molecules -- 1.3.1. Dynamics of double ionization of H2 by femtosecond lasers -- 1.3.2. Theory of double ionization of H2 by femtosecond lasers: rescattering region -- 1.3.3. Control the time sequence of double ionization by tuning laser parameters -- 1.4. Probing Nonclassical VibrationalWave Packets on Two Potential Surfaces -- 1.5. Summary and Discussion -- Acknowledgments -- References -- 2 Generalization and Application to Molecular Systems of Keldysh's Atomic Photoionization Theory K. Mishima, K. Nagaya, M. Hayashi, S. H. Lin and E. W. Schlag -- 2.1. General Introduction -- 2.2. Original Atomic Keldysh Theory -- 2.3. Generalization of the Original Atomic Keldysh Theory -- 2.3.1. Introduction -- 2.3.2. Theory-atomic case -- 2.3.3. Theory-diatomic molecule case -- 2.3.4. Results and discussion -- 2.4. Coulomb Correction of the Atomic Keldysh Theory -- 2.4.1. Introduction -- 2.4.2. Theory -- 2.4.3. Results and discussion -- 2.5. Application to Large Polyatomic Molecules -- 2.5.1. Introduction -- 2.5.2. Theory -- 2.5.2.1. Molecular Coulomb-corrected Volkov function of electron -- 2.5.2.2. Photoionization rate of spatially aligned molecules in the linearly polarized electric field -- 2.5.3. Computational method - ab initio calculation -- 2.5.4. Numerical results and discussion -- 2.5.4.1. Ab initio calculation.

2.5.4.2. Photoionization rates of all-trans polyacetylene radicals (CnHn+2, n = 3, 5, 7, 9, 13, 27) -- 2.6. Extension of the Atomic Keldysh Theory to Molecular Photoionization Processes -- 2.6.1. Introduction -- 2.6.2. Theory -- 2.6.3. Computational methods -- 2.6.3.1. Ab initio calculation -- 2.6.3.2. Calculation of Franck-Condon factors -- 2.6.4. Numerical results and discussion -- 2.6.5. Introduction -- 2.6.6. Theory -- 2.6.7. Computational methods -- 2.6.7.1. Ab initio calculation -- 2.6.7.2. Calculation of potential energy curves and Franck-Condon factors -- 2.6.8. Numerical results and discussion -- 2.7. Towards the Realization of the Quantum Chemistry Approach to Tunneling Photoionization Processes in Strong Laser Fields -- 2.8. Ab Initio/RRKM Approach to the Elucidation of the Mechanism of Photoionization and Photodissociation of Molecules in Intense Laser Fields -- 2.9. Conclusion -- Acknowledgments -- Appendix -- Appendix A. Saddle-Point Method for Integrals with a Singularity -- Appendix B. Compact Forms of L(p) Defined by Eq. (64) -- Appendix C. Definition of N(r, w, I0, I0, B,C) in Eqs. (66) and (79) -- Appendix D. Definition of N(r,r,w, I0, A, B) and Integrated Form of Eq. (121) -- Appendix E. Photoionization Rates in the First-Order Coulomb Correction -- Appendix F -- Appendix G -- Appendix H -- Appendix I. Derivation of the Quantum Interference Terms -- Appendix J. Definitions of the Terms in Eq. (214) -- Appendix K. Total Photoionization Rate with the Perpendicular Polarization under the Non-Condon Approximation -- Appendix L. Quantum Interference Terms -- References -- 3 Ionization and Fragmentation of Some Organic Molecules with Intense Femtosecond Laser Pulses Nobuaki Nakashima, Tomoyuki Yatsuhashi, Masanao Murakami, Ryuji Mizoguchi and Yoshinori Shimada -- 3.1. Introduction -- 3.2. Experimental -- 3.2.1. Femtosecond laser.

3.2.2. Intensity evaluation by measuring the focusing diameter -- 3.2.3. Intensity evaluation based on an intensity standard -- 3.2.4. Time-of-Flight (TOF) mass spectrometer -- 3.3. Ionization in Intense Laser Fields -- 3.3.1. Schematic diagram -- 3.3.2. Estimation of the order of intensity of molecular ionization -- 3.4. Ionization and Fragmentation of Large Molecules -- 3.4.1. Resonance versus non-resonance -- 3.4.2. Molecular ion formation from dienes -- 3.4.3. Wavelength dependence of 2,3-dimethyl-1,3-butadiene -- 3.4.4. Molecular ion formation of some organic molecules -- Anthracene -- Biphenyl -- Dibenzofuran -- Dioxin -- Comments on C60 Ionization -- 3.4.5. Pulse width dependence -- 3.4.6. Electron rescattering -- 3.4.7. Comparison with electron impact excitation spectra -- 3.5. Applicability to Femtosecond Laser Mass Spectrometry -- 3.5.1. FLMS and dioxins -- 3.5.2. Trichlorodioxins -- Acknowledgments -- References.