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18 papers · 1 filter
Radiation Emission by Extreme Relativistic Electrons and Pair Production by Hard Photons in a Strong Plasma Wakefield
E. Nerush, I. Kostyukov
Radiation spectrum of extreme relativistic electrons and a probability of electron-positron pair production by energetic photons in a strong plasma wakefield are derived in the fra…
Synchrotron emission in the fast cooling regime: which spectra can be explained?
E. V. Derishev
We consider the synchrotron emission from relativistic shocks assuming that the radiating electrons cool rapidly (either through synchrotron or any other radiation mechanism). It i…
Spin-phonon coupling in ZnCr2Se4
T. Rudolf, Ch. Kant, F. Mayr +3
Spin-phonon coupling and magnetodielectric effects of ZnCr2Se4 were investigated by means of infrared (IR) spectroscopy as a function of temperature and magnetic field. ZnCr2Se4 is…
Multiferroicity and colossal magneto-capacitance in Cr-thiospinels
J. Hemberger, P. Lunkenheimer, R. Fichtl +3
The sulfur based Cr-spinels RCr2S4 with R = Cd and Hg exhibit the coexistence of ferromagnetic and ferroelectric properties together with a pronounced magnetocapacitive coupling. W…
Chemical differentiation in regions of high-mass star formation I. CS, dust and N2H^+ in southern sources
L. Pirogov, I. Zinchenko, P. Caselli +1
Aims. Our goals are to compare the CS, N2H+ and dust distributions in a representative sample of high-mass star forming dense cores and to determine the physical and chemical prope…
Anomalous bond stretching phonons as a probe of charge fluctuations in perovskites
S. Cojocaru, R. Citro, M. Marinaro
Important information on momentum resolved low energy charge response can be extracted from anomalous properties of bond stretching in plane phonons observed in inelastic neutron a…