Zobrazeno 1 - 10
of 46
pro vyhledávání: '"W. Driesel"'
Publikováno v:
Magnetic Resonance Materials in Physics, Biology and Medicine. 18:206-216
A Cartesian two-dimensional navigator with variable orientation for online motion correction is introduced. It corrects for all possible zeroth- and first-order phase errors due to rigid-body motion of a subject during the diffusion-weighting prepara
Publikováno v:
Magma, 16, 277-283
Magnetic Resonance Materials in Physics, Biology and Medicine
Magma, 16, 6, pp. 277-283
Magnetic Resonance Materials in Physics, Biology and Medicine
Magma, 16, 6, pp. 277-283
Item does not contain fulltext This paper explores the application of online motion correction using navigator echoes to the segmented-EPI and FLASH techniques. In segmented EPI this has the advantage over post-acquisition correction that the positio
Publikováno v:
Journal of Physics D: Applied Physics. 29:2492-2500
Lead liquid metal ion sources (LMISs) were operated using a special specimen holder in situ in a 1 MeV TEM. The dynamics of the tip shape have been observed as a function of the ion emission current. At currents there was a jet-like protrusion on the
Autor:
Ch. Dietzsch, W. Driesel
Publikováno v:
Applied Surface Science. 93:179-190
Tin liquid metal ion sources (LMISs) were mounted to a special specimen holder for in situ observation in a 1 MeV TEM revealing the formation of the field-stabilized tin liquid cone, the change in the tip shape as a function of the ion emission curre
Publikováno v:
Journal of Physics D: Applied Physics. 28:787-793
The tip shape of a Au-Si liquid-metal ion source in terms of its dependence on the total ion emission current has been investigated in situ in the Halle 1 MeV electron microscope. Within the emission current range 7-90 mu A there is a linear dependen
Publikováno v:
Ultramicroscopy. 57:45-58
The tip shape of a gallium liquid-metal ion/electron emitter has been observed in situ in the Halle 1 MeV electron microscope in both the ion and electron emission modes. In the ion emission mode deviations of the liquid-metal cone shape from the Tay
Publikováno v:
Surface Science. 314:353-364
An indium liquid metal ion emitter has been observed in-situ in the Halle 1 MeV electron transmission microscope. The investigations have shown deviations from the theoretical shape of the Taylor cone. A linear dependence of the opening angle and the
Autor:
W. Driesel
Publikováno v:
Ultramicroscopy. 52:65-72
A low-energy ion optical system has been developed for scanning ion microscopy (SIM) as well as for processing solid structures under ultra-high-vacuum conditions. The ion optical system is composed of a gallium liquid-metal ion source, two focusing
Publikováno v:
Klinische Neurophysiologie. 35
Multi-slice perfusion-based fMRI (p-fMRI) is demonstrated with a color-word matching Stroop task as an established cognitive paradigm. Continuous arterial spin labeling (CASL) was achieved using a circular coil of 6-cm diameter placed over the left c
Publikováno v:
Journal of Vacuum Science and Technology Part B 14 (1996) 3 pp. 1621-29
For in situ observation in a 1 MeV TEM Co-Ge liquid alloy ion soures (LAISs) were mountet to a special specimen holder revealing the formation of the field-stabilizes Co-Ge liquid alloy cone, the change in the tip shape as a function of the ion emiss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa45e0948c87970074f647cdf8ee0cbe
https://www.hzdr.de/publications/Publ-409-1
https://www.hzdr.de/publications/Publ-409-1