In the past H. Münzel has collaborated on articles with M. Hollstein and A. Steckenborn. One of their most recent publications is The decay of 232Np. Which was published in journal Journal of Inorganic and Nuclear Chemistry.

More information about H. Münzel research including statistics on their citations can be found on their Copernicus Academic profile page.

H. Münzel's Articles: (5)

The decay of 232Np

AbstractThe decay of 232Np has been studied by γ-spectroscopy. This nuclide decays predominantly by electron capture with a half-life of 14·7 ± 0·3 min. Eight new transitions and two levels above 1·051 MeV have been found for the daughter nucleus 232U. The energy and relative intensity of fifteen γ-lines, EC- and γ-branching intensities are given. A decay scheme is proposed.

Cathodoluminescence lifetime pattern of GaAs surfaces around dislocations

AbstractCathodoluminescence intensity and lifetime patterns consisting of 126x126 points are determined at variable temperatures for wavelengths ≤ 1.1 μm with a time resolution of 4.5 ns in less than 5 min. with newly developed techniques. Emission lines of samples under investigation are used as thermometers to ensure that lowest lattice temperatures are indeed reached under excitation. First results on CL decay time distributions around dislocations on GaAs (100) surfaces are presented and a comparison with the corresponding CL intensity distributions is made. Local symmetry is discovered around dislocations and the extent and size of intensity modulations differs from that of lifetime modulations.

Dissolution kinetics of zircaloy in HNO3/HF mixtures

AbstractThe kinematics of the dissolution of Zircaloy in HF/HNO3 mixtures was investigated at 0, 40 and 80°C. The reaction rate is proportional to the concentration of HF and the relative velocity of the solution. The influence of the concentration of HNO3 is much less pronounced. The time dependence of the weight loss can be reasonably well be reproduced with a simple model, which is based on the assumption that the diffusion of the fluoric acid governs the dissolution kinetics.

Ein stufenkeil-energievariator für den aussenstrahl des Karlsruher isochronzyklotrons

AbstractAn energy absorber was constructed to reduce the energy of the external deuteron or alpha beam of the Karlsruhe isochronous cyclotron. Thin plates of beryllium stepped by 1.0 and 0.1 mm, respectively, are mounted at the top of two closely arranged rods. Two other rods support a ZnS-screen, a beam centering device, a beam measuring foil as well as a beam mask. The following tests are described: measurement of energy, energy straggling and angular distribution of the attenuated particles; transmission measurements of the refocusing lens system; indirect beam current measurements via secondary electrons.

A-and B-parameter dependent submicron stepper performance of positive type photoresist

AbstractA systematical investigation of the g-line stepper performance of positive type photoresists with varying absorption properties has been carried out on highly reflective substrates. Numerous parameters such as photospeed, pattern profile, focus and exposure energy latitude are evaluated by SEM inspection of submicron resist lines after exposure with a stepper of NA=0.42. It is shown that the amount of non-bleachable absorption (B-value [1]) alters only slowly the imaging properties of the resists on aluminum surfaces, whereas changes in the bleachable absorption (expressed by the A-value) lead to large differences in the resist profiles and the tolerance of the lithographic process. Profile simulations with PROSIM [2] and PROLITH [3] indicate that the development characteristics rather than the optical properties determine the performance of the resists.

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