Index Catalog // ScholarsArchive@OSU

Creator:: Zhang, Jie, Harthcock, Colin, Han, Fangyuan, and Kong, Wei
Abstract:: We report zero kinetic energy (ZEKE) photoelectron spectroscopy of benzo[a]pyrene (BaP) via resonantly enhanced multiphoton ionization (REMPI). Our analysis concentrates on the vibrational modes of the first excited state (S₁) and those of the ground cationic state (D₀). Similar to pyrene, another peri-condensed polycyclic aromatic hydrocarbon we have investigated, the...
Resource Type:: Article
Full Text:: American Institute of Physics. [doi:10.1063/1.3672161] INTRODUCTION Polycyclic aromatic hydrocarbons

Creator:: He, Yunteng, Zhang, Jie, and Kong, Wei
Abstract:: We compare characteristics of electron impact ionization (EI) and multiphoton ionization (MPI) of doped super fluid helium droplets using the same droplet source. Selected dopant ion fragments from the two ionization schemes demonstrate different dependence on the doping pressure, which could be attributed to the different ionization mechanisms. While EI...
Resource Type:: Article
Full Text:: : The Journal of Chemical Physics 144, 084302 (2016); doi: 10.1063/1.4942473 View online: http

Creator:: Zhang, Jie, Chen, Lei, Freund, William M., and Kong, Wei
Abstract:: We report a facile method of doping cations from an electrospray ionization (ESI) source into superfluid helium droplets. By decelerating and stopping the ion pulse of reserpine and substance P from an ESI source in the path of the droplet beam, about 10⁴ ion-doped droplets (one ion per droplet) can...
Resource Type:: Article
Full Text:: . The Journal of Chemical Physics, 143 (7), 074201. doi:10.1063/1.4928689 10.1063/1.4928689 American

Creator:: Harthcock, Colin, Zhang, Jie, and Kong, Wei
Abstract:: We report vibrational information of both the first electronically excited state and the ground cationic state of jet-cooled triphenylene via the techniques of resonantly enhanced multiphoton ionization (REMPI) and zero kinetic energy (ZEKE) photoelectron spectroscopy. The first excited electronic state S₁ of the neutral molecule is of A₁' symmetry and...
Resource Type:: Article
Full Text:: Physics, 140(24), 244308. doi:10.1063/1.4884905 10.1063/1.4884905 American Institute of Physics

Creator:: He, Yunteng, Zhang, Jie, Li, Yang, Freund, William M., and Kong, Wei
Abstract:: We present two facile time-of-flight (TOF) methods of detecting superfluid helium droplets and droplets with neutral dopants. Without an electron gun and with only a heated filament and pulsed electrodes, the electron impact ionization TOF mass spectrometer can resolve ionized helium clusters such as He₂ ⁺ and He₄ ⁺, which...
Resource Type:: Article
Full Text:: Instruments, 86(8), 084102. doi:10.1063/1.4928107 10.1063/1.4928107 American Institute of Physics Version

Creator:: Chen, Lei, Zhang, Jie, Freund, William M., and Kong, Wei
Abstract:: We present an experimental investigation of the effect of kinetic energy on the ion doping efficiency of superfluid helium droplets using cesium cations from a thermionic emission source. The kinetic energy of Cs⁺ is controlled by the bias voltage of a collection grid collinearly arranged with the droplet beam. Efficient...
Resource Type:: Article
Full Text:: droplets. The Journal of Chemical Physics, 143(4), 044310. doi:10.1063/1.4927471 10.1063/1.4927471

Creator:: Zhang, Jie, He, Yunteng, and Kong, Wei
Abstract:: We report electron diffraction of ferrocene doped in superfluid helium droplets. By taking advantage of the velocity slip in our pulsed droplet beam using a pulsed electron gun, and by doping with a high concentration of ferrocene delivered via a pulsed valve, we can obtain high quality diffraction images from...
Resource Type:: Article
Full Text:: Publishing. [http://dx.doi.org/10.1063/1.4953250] INTRODUCTION Gas phase electron diffraction (GED) has

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