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Abstract. Poly(N-vinylcaprolactam)D2O has been studied by Neutron Spin Echo (NSE) in the temperature range from -60C to +40C. Hydration (7 D2O molecules per chain unit) transforms the rigid-chain polymer into an elastomer, making the glass-transition temperature drop from TG=147C (dry polymer) to TG=-20C. The hydration shell, created by hydrogen bonds of water molecules with C=O groups, remains stable...
Abstract. The cold three-axis spectrometer PANDA will be among the first instruments to start operating at the new neutron source in Munich. Monte Carlo simulations of neutrons passing the spectrometer have been performed in order to model the components of the neutron optics and provide information about the features of this new spectrometer in its different modes of operation. In a first step, simulations...
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