A new mechanism of magnetic flux compression proposed by one of the authors has been experimentally proved promising for the generation of ultrahigh pulsed fields. A cylindrical implosion type device is used here, and the thin metal liner normally used is replaced by a solid cylinder of crystalline or powdery silicon. As predicted by the theory, the field compression factor depends strongly on the initial density of the silicon, on the explosive, and on the scale. A typical value of the field multiplication factor is 17.8 for a 45-mm-diam silicon cylinder of density 1.1 g/cm3.
The distribution of product ions in the title reactions was studied for 24 metals. The most abundant ions were those with n = 3, 4, 5, 6, 4, 3, and 3 for M = Ti, V, Cr, Mn, Fe, Co, and Ni. Those in the second series of transition metals were dominated by n = 3 (or 3 and 4). Such a difference among metals was qualitatively interpreted in terms of strengths of M+–Cr bonds.
Intense laser light was focussed on the surface of a metal substrate (Nb or Cu) in vacuum, and a molecular beam of Mn2(CO)10 was injected nearby. Product ions resulting from the reaction of substrate metal ions or electrons with Mn2(CO)10 were analyzed by mass-spectroscopy. This method provides a simple and versatile diagnosis for the reactions of metal ions and/or electrons with molecules in the gas phase.
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