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Brillouin scattering spectra of the molecular glassformer propylene carbonate (PC) in the temperature range 140 K to 350 K were analyzed using both the phenomenological Cole-Davidson memory function and a hybrid memory function consisting…

Soft Condensed Matter · Physics 2011-04-05 Alexander Brodin , Martin Frank , Sabine Wiebel , Guoqing Shen , Joachim Wuttke , H. Z. Cummins

Low-frequency Raman and inelastic neutron scattering of amorphous bis-phenol A polycarbonate is measured at low temperature, and compared. The vibrational density of states and light-vibration coupling coefficient are determined. The…

Disordered Systems and Neural Networks · Physics 2009-10-31 L. Saviot , E. Duval , J. F. Jal , A. J. Dianoux

In muon scattering tomography, the investigated materials are discriminated according to the scattering angle that mainly depends on the atomic number, the density, and the thickness of the medium at a given energy value. The scattering…

Instrumentation and Detectors · Physics 2022-12-09 Ahmet Ilker Topuz , Madis Kiisk , Andrea Giammanco , Mart Magi

The upcoming flexible ultra-thin glass for foldable displays has attracted widespread attention as an alternative to rigid electronic smartphones. However, the detailed compositional effect of the chemical strengthening of the glass is not…

Materials Science · Physics 2022-03-31 Se-Ho Kim , Leigh T. Stephenson , Torsten Schwarza , Baptiste Gault

We include the $\Delta$-isobars in the equation of state (EOS) of neutron star (NS) and study its effects with various parameter sets of the RMF model. We compare our results with the NS's constraints from the mass-radius measurement of PSR…

Nuclear Theory · Physics 2025-01-07 Rashmita Jena , S. K. Biswal , Padmalaya Dash , R. N. Panda , M. Bhuyan

Structure and properties of magnesium silicate and borate melts and glasses were investigated by using newly parameterized interaction potentials in molecular dynamics simulations and compared with those of calcium silicate and borate. The…

Materials Science · Physics 2021-05-05 Yueh-Ting Shih , Siddharth Sundararaman , Simona Ispas , Liping Huang

We report that both shear and bulk moduli, not only shear modulus, are critical parameters involved in both homogeneous and inhomogeneous flows in metallic glass. The flow activation energy (\Delta F) of various glasses when scaled with…

Materials Science · Physics 2015-05-19 J. Q. Wang , W. H. Wang , H. Y. Bai

Photoelectrochemical water splitting is a promising route to produce hydrogen from solar energy. However, corrosion of semiconducting photoelectrodes remains a fundamental challenge for their practical application. The stability of BiVO4,…

A structure, used as a complex source of X-rays and neutron source, is designed with the assistance of CST module tool. Particles of -H and electron, attracted from a plasma source, are designed to be separated by an energy selector. Soon…

Accelerator Physics · Physics 2020-02-13 X. B. Yang , X. B. Qin , P. H. Liu , T. Li , K. Zhuang

We present the results of the measurements of the detection efficiency for a 4.7 \r{A} neutron beam incident upon a detector incorporating a stack of up to five MultiWire Proportional Counters (MWPC) with Boron-coated cathodes. The cathodes…

Instrumentation and Detectors · Physics 2015-06-17 I. Stefanescu , Y. Abdullahi , J. Birch , I. Defendi , R. Hall-Wilton , C. Hoglund , L. Hultman , M. Zee , K. Zeitelhack

Bulk ferromagnetic amorphous Fe-Ni-P-B alloys in rod shape were formed by a rapid solidification technique. The largest amorphous specimen prepared had a diameter of ~2.5 mm and the corresponding cooling rate for the glass formation of this…

Materials Science · Physics 2007-05-23 Qiang Li

Using molecular dynamics computer simulations we investigate how the glass transition and the properties of the resulting glass depend on the cooling rate with which the sample has been quenched. This is done by studying a two component…

Condensed Matter · Physics 2009-10-28 Katharina Vollmayr , Walter Kob , Kurt Binder

Electrical modulus analysis of the frequency dependent conductivity data over the range from 100 Hz to 10 MHz and at temperature range of 140 oC to 300 oC were carried out on the mixed alkali vanadate glass samples having lithium and…

Materials Science · Physics 2018-06-01 Gajanan V Honnavar

Using results on soft-collinear factorization for inclusive B-meson decay distributions, a systematic study of the partial B->Xs+gamma decay rate with a cut E_gamma<E_0 on photon energy is performed. For values E_0<1.9 GeV the rate can be…

High Energy Physics - Phenomenology · Physics 2009-11-10 Matthias Neubert

We measure the branching fraction of the radiative B- decay B(B- -> phi K- gamma) = (3.46 +/- 0.57^{+0.39}_{-0.37}) 10^-6, and set an upper limit on the radiative B0 decay B(B0 -> phi K0 gamma) < 2.71 10^-6 at 90% confidence level. We also…

High Energy Physics - Experiment · Physics 2007-05-23 The BABAR Collaboration , B. Aubert

This study demonstrates a substantial enhancement of breakdown voltage in $\beta$-Ga$_2$O$_3$ Schottky diodes through an approach that combines fast neutron irradiation with controlled post-irradiation electro-thermal annealing. Devices…

A theoretical analysis of the partial inclusive B-->X_s gamma decay rate with a cut E_gamma>E_0 on photon energy must deal with short-distance contributions associated with three different mass scales: the hard scale m_b, an intermediate…

High Energy Physics - Phenomenology · Physics 2009-11-11 Thomas Becher , Matthias Neubert

PbSe-doped silicate glasses were studied through wide-angle X-ray diffraction (WXRD) and small-angle neutron scattering (SANS). PbSe nanoparticles in the glasses were produced due to the secondary heat treatment at different temperatures…

Mesoscale and Nanoscale Physics · Physics 2017-12-12 V. S. Gurin , G. E. Rachkovskaya , G. B. Zakharevich , S. E. Kichanov , Yu. E. Gorshkova

The efficiency of acoustooptic (AO) diffraction in a-BaB2O4 and Li2B4O7 crystals is studied experimentally. The crystals are shown to be quite good AO materials. The efficiency of AO diffraction in a-BaB2O4 reaches h=30% at the electric…

General Physics · Physics 2007-08-16 I. Martynyuk-Lototska , T. Dudok , O. Krupych , V. Adamiv , Ye. Smirnov , R. Vlokh

The utilization of polarized targets in scattering experiments has become a common practice in many major accelerator laboratories. Noble gases are especially suitable for such applications, since they can be easily hyper-polarized using…

Optics · Physics 2015-07-20 Gretchen Phelps , Josh Abney , Mark Broering , Wolfgang Korsch