Notizen: A Pulsed Molecular Beam Microwave Fourier Transform Spectrometer with Parallel Molecular Beam and Resonator Axes

Articles in the same Issue

1. The Quantum Statistical Free Energy Minimum Principle for Multi-Lattice Mean Field Theories
2. Improved Molecular Constants of Acetylene Obtained from the v₅ Band System
3. Quantum Features of Microwave Propagation in a Rectangular Waveguide
4. Chaos Near Structural Phase Transition
5. A Theory of Anharmonic Perturbations in a Penning Trap
6. Ideal Gas Approximation for an Ion Cloud in a Penning Trap
7. Nitrogen Quadrupole Coupling in the Rotational Spectrum of l-Isocyanoprop-2-yne, HC ≡ CCH₂NC
8. Methyl Internal Rotation Fine Structure in the Ground State Rotational Spectrum of Gauche Butane
9. Variation of the Dielectric Relaxation Behaviour of Water by Added Alcohols
10. Absorption and Luminescence Studies of Some Highly Fluorescent Derivatives of Vitamin B₁; Solvent and pH Effects
11. The influence of solvent on the UV-visible absorption and luminescence spectra of some highly fluorescent vitamin derivatives, the products of the reaction of N-methylated vitamin Bj with cytidine (I), adenosine (II) and 2-amino-4-methylpyridine (III) is studied. Spectroscopic manifestations of protonation of I and II are also investigated using a semiempirical INDO/S CI method. Singlet and triplet energy levels of the free ion and several protonated species are calculated, and transition energies and oscillator strengths are compared with the experimental spectra. Calculated charge densities on heteroatoms in the ground and excited singlet and triplet states are correlated with changes of the experimental pKa values with excitation. The results for I and II are compared with those for the trimethylated pyrichrominium ion (III) previously studied
12. Monte Carlo Simulation of Muscarine in Water Solution
13. Lattice Vibrations, MIR and FIR Optical Properties of Boron and Icosahedral Boron-Rich Borides II. β-Rhombohedral Structure Group
14. Electric field Gradient Modulation by Motion of Lone-Pair Electrons in [(CH₃)₃S]₂MCl₆ (M = Pt, Sn) as a Possible Relaxation Mechanism of Chlorine Nuclear Quadrupole Resonance
15. Hydrogen in Electrodynamics. V. Dirac-Hydrogen by Means of New Operators
16. Notizen: Some Remarks on the Concept of Molecular Topology
17. Notizen: A Pulsed Molecular Beam Microwave Fourier Transform Spectrometer with Parallel Molecular Beam and Resonator Axes
18. Notizen: Pressure Dependence of the Melting of RbHS0₄
19. Report: Nonequilibrium Phase Transitions of Impact Ionization Breakdown in Extrinsic Semiconductors