TRANSFER IONIZATION IN COLLISIONS OF PARTIALLY STRIPPED F^q+ WITH HELIUM ATOMS

Abstract

The cross-section ratios R of transfer ionization to single electron capture of Helium atom induced by fluorine ions in the strong-interaction region were measured by means of the position-sensitive-detection and the time-of-flight (TOF) technologies. The velocity and charge state dependence of R were studied. It is found that the R decreases when the 2q/v increases, where q and v are the charge state and velocity of projectile respectively. In this energy region the transfer ionization can be look as Two-Step process that one target electron is captured, and another electron is ionized.

Photoelectrochemical performance of a nanostructured BiVO4/NiOOH/FeOOH–Cu2O/CuO/TiO2 tandem cell for unassisted solar water splitting

“…However, BiVO 4 suffers from surface recombination, a high onset potential and poor water oxidation kinetics. 12 These hurdles signicantly reduce the current density of BiVO 4 compared to the theoretical current density of 7.5 mA cm −2 . 13 Approaches, such as the addition of dopants, heterojunction formation, incorporating an interlayer 14 and increasing the surface area by morphology control, can improve its PEC properties.…”

Engineering the transition metal hydroxide–photoanode interface with a highly crystalline mediator for efficient photoelectrochemical water splitting

“…Among all selected candidates, BiVO 4 exhibits obvious advantages for PEC water splitting owing to its earth abundance, small bandgap (2.4-2.5 eV) and suitable band edge. [30][31][32][33][34] Nevertheless, the PEC performance of the BiVO 4 photoanode is limited by severe charge recombination and the sluggish surface oxygen evolution reaction (OER), 35 resulting in unexpected photocurrent density in water splitting. [36][37][38] Recently, various approaches have been devised to enhance the PEC performance of SC photoanodes.…”