Growth and structure of crystalline silica sheet on Ru(0001)

Thin SiO? films were grown on a Ru(0001) single crystal and studied by photoelectron spectroscopy, infrared spectroscopy and scanning probe microscopy. The experimental results in combination with density functional theory calculations provide compelling evidence for the formation of crystalline, double-layer sheet silica weakly bound to a metal substrate.     

Nucleon-nucleon correlations and the Coulomb Displacement Energy

Coulomb Displacement Energies (CDE) are accurately known for a wide range of nuclear masses. Assuming isospin independence in the nuclear Hamiltonian, the CDE can in first instance be interpreted as the Coulomb interaction energy between the density of the excess neutrons and the proton charge density in the parent nucleus. However, when using reasonable meanfield models for the proton and neutron density one underestimates the CDE by about 8% on average. This discrepancy is known as the Nolen-Shiffer anomaly, and various explanations have been put forward in the past. In this work we reexamine the role of nucleon-nucleon correlations. We present calculations for the pair density functions in various nuclei. Preliminary results suggest that the modifications to the mean-field pair density functions cause an enhancement of the CDE in the order of 4%, which is ratherA-independent.     

Alkalimetrische Mikrobestimmung der Aminos?uren und Peptide

Ohne Zusammenfassung     

Possible evidence for microsecond shape isomerism in Tl isotopes

The decay of isomeric states in ^201mTl, ^202mTl and ^204mTl is investigated with a Ge(Li) detector. The isomeric states are produced with LINAC bremsstrahlung (24–32 MeV). Life-times and precise energies have been determined. In the ^201mTl case, shape isomerism is proposed, based on calculations of the total potential energy surfaces and calculations of the lifetime in a Nilsson model.     

Energy levels and transition probabilities in 130Sn

The excited states of ¹³⁰Sn have been studied in the decay of three different isomers of ¹³⁰In. The experimentally determined energy levels and transition probabilities are compared with comprehensive shell-model calculations using the full neutron single-hole configuration space. Additional theoretical and experimental data regarding ¹²⁸Sn are also presented.     

Extraction atomic absorption determination of traces of phosphorus in tungsten trioxide

Ohne Zusammenfassung

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Dust analysis of anhydrides by ¹H-NMR-spectroscopy