K-shell ionization for Li-like uranium ions in collisions with a N2 target was performed at the ESR storage ring. We found surprisingly that in such close encounters the 2 s electron remain almost unaffected by the co...K-shell ionization for Li-like uranium ions in collisions with a N2 target was performed at the ESR storage ring. We found surprisingly that in such close encounters the 2 s electron remain almost unaffected by the collisions. A dedicated experimental study was conducted by using Li-like uranium ions at an initial energy of 378 MeV/u in order to manifest the situation. In Fig.1 a typical spectrum is shown registered by a Ge(i)展开更多
Batch stirred vessels, being devoid of through flow, cannot be assessed by the classical response technique. However, visible inert tracers can be readily observed in a batch or semi-batch stirred vessel. Visible ima...Batch stirred vessels, being devoid of through flow, cannot be assessed by the classical response technique. However, visible inert tracers can be readily observed in a batch or semi-batch stirred vessel. Visible images of the mixing and dispersion of the tracer present a picture in both space and time of the mixing process. Axi-symmetric networks of backmixed zones were used in an image reconstruction approach to analytically characterize the mixing. Computer generated images were compared with experimental results. The qualitative agreement between the observed and calculated images suggests that the analysis of batch stirred reactors can be used to guide operational strategies to control internal concentration fields.展开更多
文摘K-shell ionization for Li-like uranium ions in collisions with a N2 target was performed at the ESR storage ring. We found surprisingly that in such close encounters the 2 s electron remain almost unaffected by the collisions. A dedicated experimental study was conducted by using Li-like uranium ions at an initial energy of 378 MeV/u in order to manifest the situation. In Fig.1 a typical spectrum is shown registered by a Ge(i)
基金Supported by the National Natural Science Foundationof China(No. 2 983 613 0 ) and Basic Research Fund ofTsinghua U niversity(No.JZ2 0 0 0 0 0 8)
文摘Batch stirred vessels, being devoid of through flow, cannot be assessed by the classical response technique. However, visible inert tracers can be readily observed in a batch or semi-batch stirred vessel. Visible images of the mixing and dispersion of the tracer present a picture in both space and time of the mixing process. Axi-symmetric networks of backmixed zones were used in an image reconstruction approach to analytically characterize the mixing. Computer generated images were compared with experimental results. The qualitative agreement between the observed and calculated images suggests that the analysis of batch stirred reactors can be used to guide operational strategies to control internal concentration fields.
