Publications database

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2017-06-28
12:48
DBCoverage [PUBDB-2017-06269] Journal Article
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Measurement of the branching ratios for the decays $\tau \to$ hadron $\pi^0ν$ and $\tau \to$hadron $\eta^0\eta^0ν$
ddc:530
The Crystal Ball detector at the DORIS II storage ring at DESY has been used to measure the branching ratios for the decay modes τ±→h±π0ν and τ±→h±π0π0ν, where h± is any charged hadron. The results are BR(τ±→h±π0ν) = (22.0±0.8±1.9)%, BR(τ±→h±π0π0ν) = (5.7±0.5+1.0−1.7)%. [...]
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2017-06-28
12:43
[PUBDB-2017-06268] Journal Article
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A synchrotron radiation, HRTEM, X-ray powder diffraction, and Raman spectroscopic study of malayaite, CaSnSiO$_5$
ddc:550
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2017-06-28
02:47
[PUBDB-2017-06226] Journal Article
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Surface electronic structure of Ge(001)2 × 1: experiment and theory
ddc:540
Detailed studies of the surface electronic structure of Ge(001)2 × 1 have been performed with angle-resolved photoemission. Five surface structures are identified in the spectra and their initial-energy dispersions E(k∥) are presented along the [010] direction. [...]
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2017-06-27
21:09
DBCoverage [PUBDB-2017-06225] Journal Article
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Global properties of pion production in the reaction $\gamma\gamma\to 3\pi^+3\pi^-$
ddc:530
We have studied the properties of pion production in the reaction γ→3π+3π− in the energy range 1.6⩽Wγγ⩽7.5 GeV with the CELLO detector at PETRA. We present the topological cross section both for Q2≈0 (anti-tag) and Q2≈0 (single-tag). [...]
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2017-06-27
19:39
[PUBDB-2017-06224] Journal Article
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Limits on electron compositeness from Bhabha scattering
ddc:530
We have studied the reactione+e−→e+e− using data taken by the CELLO detector at 35 GeV centre of mass energy with an integrated luminosity of 86 pb−1. The differential cross section is found to agree with the Standard Model and is used to set limits on possible deviations from the pointlike structure of the electron. [...]
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2017-06-27
19:19
[PUBDB-2017-06223] Journal Article
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Degradation of CMOS-integrated electronics under ionizing irradiation
ddc:530
In high energy physics collider experiments, particles interact with semiconductor structures of integrated circuits, causing degradation of the physical and electronic characteristics.At the calorimeter of the HERA-experiment ZEUS, at DESY, a fast analog storage device, realized by CMOS integrated electronics was investigated under irradiation conditions higher than those expected in the experiment. Various parameters showed continuous degradation with irradiation. [...]
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2017-06-27
15:36
[PUBDB-2017-06174] Journal Article
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Valence- and inner-shell spectroscopy on rare-gas clusters
ddc:530
An overview of the present status of valence- and inner-shell spectroscopy on rare-gas clusters is given. Fluorescence excitation, time-of-flight ion and photoelectron spectroscopy with synchrotron excitation was used to study the electronic level structure of rare-gas clusters. [...]

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2017-06-27
15:27
[PUBDB-2017-06173] Journal Article
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Structure and correlations in porous silicon studied by X-ray scattering methods
ddc:540
The internal structure of p− and p+ doped porous silicon (PS) has been investigated by small-angle X-ray scattering (SAXS) and grazing incidence diffraction (GID) using synchrotron radiation. The silicon morphology in p− doped samples shows a bimodal distribution of small (some nm) and larger (some 10 nm) particle sizes for all porosities investigated. [...]
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2017-06-27
15:24
[PUBDB-2017-06172] Journal Article
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Bimodal size distribution in p$^-$ porous silicon studied by small angle X-ray scattering
ddc:070
The structure of free-standing films of p-doped porous silicon with different porosities has been investigated by small-angle X-ray scattering using synchrotron radiation. The silicon morphology in the samples shows a bimodal distribution of particle sizes for all porosities investigated: small spherically shaped particles with a diameter of a few nanometers and large cylindrically shaped particles oriented with their axis perpendicular to the surface. [...]
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2017-06-27
15:23
[PUBDB-2017-06171] Journal Article
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A differential anomalous X-ray scattering study of lead(II)acetate trihydrate in 2-methoxyethanol
ddc:540
The results of a differential anomalous X-ray scattering (DAS) study on lead(II)acetate trihydrate, dissolved in 2-methoxyethanol, are reported. Anomalous X-ray scattering at two energies below the L3-edge of lead (Pb) was used to determine the local environment of Pb and to get more precise information on the complex molecular structure of the liquid. [...]

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