Influencing the formation of H<sub>3</sub><sup>+</sup> from ethane using shaped ultrafast laser pulses
ORAL
Abstract
Using both closed- and open-loop control to tailor ultrafast laser pulses, we study the ratio of D2H+ to D3+ produced from the D3C-CH3 isotopologue of ethane, which selects between trihydrogen cations formed from atoms on one or both sides of ethane. The D2H+:D3+ ratio can be modified by a factor of two or more using an adaptive feedback method. In addition, two-dimensional scans of linear chirp and third-order dispersion are conducted for a few fourth-order dispersion values while the D2H+ and D3+ production are monitored. In an effort to better understand the processes leading to D3+ formation, we conduct COLTRIMS measurements of dissociative ionization of C2D6 to complement the velocity map imaging data obtained during the control experiments.
*Augustana University personnel are supported by NSF grant PHYS-2011864. J.R. Macdonald Lab personnel and equipment are supported by U.S. Department of Energy grant #DE-FG02-86ER13491.
–
Presenters
-
Eric Wells
- Augustana University