137 research outputs found

    A Hall effect thruster plume model including large-angle elastic scattering

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76556/1/AIAA-2001-3355-806.pd

    Mathematical Solution of the Problem of Roll Waves in Inclined Open Channels

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    the nondimensional wavespeed as a function of the rotational Froude number. For the same Froude number, the rotational wavespeed is slightly greater than the equivalent inclined film wavespeed. A stability condition for wave motion has also been obtained. The stability condition indicates that the critical Froude number for rotating films is larger than that for inclined films

    Development of Silicon Drift Detectors and Digital Filtering Electronics for X-Ray Spectroscopy

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    We report on the performances of energy resolved detectors and electronics developed for X-ray absorption spectroscopy studies in the fluorescence excitation mode. Large active area multianode silicon drift detectors have been designed and evaluated. A typical energy resolution of 170 eV FWHM has been measured at 5.98 keV for a 6 us triangular shaping time. The data acquisition is based on multichannel digital shaping amplifiers developed at the ESRF. Excellent energy resolutions can be achieved with reduced dead rimes in comparison with analog shapers. The high level of integration and the full software control is compatible with the implementation of large detector arrays

    Computing meteorological effects on aircraft noise.

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