全部文献期刊会议图书|学者科研项目
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作者:B. Geiger , K. Geurts ...
来源:[J].Acta Astronautica(IF 0.701), 2019, Vol.157, pp.199-214
摘要:Abstract(#br)On the 12th of November 2014, the Rosetta Philae Lander descended to make the first soft touchdown on the surface of a comet – comet 67P/Churyumov-Gerasimenko. That soft touchdown did occur but due to the failure in the firing of its two harpoons, Philae bounced...
作者:B. Geiger , T.P. Goodman ...
来源:[J].Fusion Engineering and Design(IF 0.842), 2019, Vol.146, pp.773-777
摘要:Abstract(#br)The TCV tokamak contributes to physics understanding in fusion reactor research by a wide set of experimental tools, like flexible shaping and high power ECRH. A 1MW, 25 keV deuterium heating neutral beam (NB) has been installed in 2015 and it was operated from ...
作者:B. Geiger , F.J.P. Schott
来源:[J].Catalysis Communications(IF 2.915), 2009, Vol.10 (7), pp.1103-1106
摘要:Abstract(#br)The present paper presents a simple method for the reliable preparation of nano-scaled ZrO 2 . In this wet synthesis, a stable Zr sol is produced by using a mixture of Zr(OC 3 H 7 ) 4 , HNO 3 and H 2 O. Precipitation is firstly achieved when ammoniac conditions ...
作者:B. Geiger , Th. Wegner ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (4)
摘要:The transport of heavy impurities has been investigated at the Wendelstein 7-X stellarator during core electron root confinement (CERC) experiments. Iron atoms were injected via the laser blow-off technique and analyzed by VUV and x-ray spectrometers. The injected amount of iron ...
作者:B. Geiger , J. Eriksson ...
来源:[J].Journal of Instrumentation(IF 1.869), 2019, Vol.14 (5)
摘要:The measurement of the energy spectra and densities of Α-particles and other fast ions are part of the ITER measurement requirements, highlighting the importance of energy-resolved energetic-particle measurements for the mission of ITER. However, it has been found in recent ...
作者:B. Geiger , L. Giannone ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (12)
摘要:Recent improvements to the heating and diagnostic systems on the ASDEX Upgrade tokamak allow renewed investigations into non-inductive operation scenarios with improved confinement in a full-metal device. Motivated by this, a scenario with , and a high non-inductive current...
作者:B. Geiger , A. Hakola ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (1)
摘要:The impact of lithium (Li) on plasma performance was investigated at the ASDEX Upgrade tokamak, which features a full tungsten wall. Li pellets containing 1.6 × 1020 Li atoms were launched with a speed of 600 m s−1 to achieve deep penetration into the p...
作者:B. Geiger , P.A. Schneider ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (11)
摘要:Recent upgrades to the FIDA (fast-ion D-alpha) diagnostic at ASDEX Upgrade allow to reconstruct the fast-ion phase space at several radial positions with decent energy and pitch resolution. These new diagnostic capabilities are applied to study the physics of 2nd harmonic ion cyc...
作者:B. Geiger , A. Kallenbach ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (1)
摘要:Ion cyclotron emission (ICE) signals whose spectral peaks match the fundamental cyclotron frequencies of hydrogen and tritium in the plasma core , near the magnetic axis, are observed in ASDEX Upgrade deuterium plasmas. In these cases the only source of energetic (⩾1 MeV) hy...

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