Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Peter Allenspach"'
Autor:
Simon Mayer, Peter Allenspach, Philipp Schmidt-Wellenburg, Geza Zsigmond, P. Geltenbort, Helmut Rauch
Publikováno v:
Neutron News. 21:26-29
Primary neutron sources are based on research reactors and spallation sources whose peak fluxes are limited to values below 1017 cm−2s−1[1,2]. In this paper we present a method which can complement and improve the performance of existing and upco
Autor:
Peter Allenspach, P. Geltenbort, Helmut Rauch, Geza Zsigmond, Philipp Schmidt-Wellenburg, Simon Mayer
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 608:434-439
Neutron scattering is an important tool for the investigation of static and dynamic structures of matter. As it is an intensity limited technique, many attempts have been made to increase the effective beam intensity. High neutron intensities or, mor
Publikováno v:
Journal of Neutron Research. 16:75-80
For almost three decades neutron guides have been built as multipurpose installations: essentially straight and with a rectangular cross section. At that time instruments on guides were planned and designed from the guide exit to the detectors. With
Autor:
J. Kulda, Ferenc Mezei, Phillip M. Bentley, Peter Kjær Willendrup, P. Christiansen, K. Lieutenant, Peter Allenspach, Kim Lefmann, Paul Langan, Geza Zsigmond, Jan Šaroun, H. Schober, R.K. Heenan, P. Tindemans, Ken Haste Andersen, Emmanuel Farhi, B. Cubitt, Michael Monkenbusch
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 589:34-46
Long-pulse spallation sources will offer a very high time-integrated neutron flux similar to that of the best steady-state sources. Using Monte Carlo simulations we show that the exceptional source qualities translate directly into strongly enhanced
Autor:
Hafiz M. Rafique, Andrew G. Thomas, Sergei N. Barilo, Ekaterina Pomjakushina, Kaziemerzh Conder, Anatoly S. Shestak, Peter Allenspach, Yury P. Chernenkov, Vladimir P. Plakhty, Wendy R. Flavell, G. L. Bychkov, S. V. Shiryaev
Publikováno v:
Journal of Crystal Growth. 310:1867-1874
Large and high-quality single crystals of LnBaCo 2 O 5+ x (Ln-112; Ln=Gd, Dy; 0 x 3 . We carried out high-resolution and resonance photoemission of the crystals. This allowed us to probe in great detail the highest energy bands, giving direct informa
Publikováno v:
Journal of Neutron Research. 16:1-12
The design and performance of the new inverted-geometry time-of-flight backscattering instrument, Mica Analyzer high Resolution inverted time-of-flight backscattering Spectrometer (MARS) located at SINQ, at the Paul Scherrer Institut, is described. T
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 586:110-115
The very high phase space density of ultra-cold neutrons (UCN) originating from a superthermal UCN-source can be exploited for the production of intense cold neutron beams. UCN are accelerated by means of Doppler-shifter crystals. This method is call
Publikováno v:
Neutron News. 19:20-24
Current topics engaging the attention of the scientific community place an ever-increasing demand on accessing information in the microwave and far-infrared energy regions of the electromagnetic spectrum. This is manifested not only in the heavy dema
Autor:
Peter Allenspach
Publikováno v:
Neutron News. 11:15-18
SINQ, at the Paul Scherrer Institut (PSI) in Villigen, Switzerland, is the first continuous spallation neutron source worldwide. The continuous flow of neutrons and the vertical target arrangement is responsible for an instrument suite characteristic
Autor:
Stephen W. Lovesey, Peter Allenspach
Publikováno v:
Physica Scripta. 57:657-663
A calculation of the circular dichroic signal in the attenuation coefficient of a two-iron cluster is used to demonstrate the potential ability of soft x-ray absorption spectroscopy to give quantitative information very directly on its magnetic state