High-resolution state-selected ion-molecule reaction studies using pulsed field ionization photoelectron-secondary ion coincidence method | Zendy

Xiao Qian | Zendy; T. Zhang | Zendy; C. Chang | Zendy; P. Wang | Zendy; C. Y. Ng | Zendy; Yu–Hui Chiu | Zendy; Dale J. Levandier | Zendy; J. Scott Miller | Zendy; Rainer A. Dressler | Zendy; Tomas Baer | Zendy; Darcy S. Peterka | Zendy

Open Access

High-resolution state-selected ion-molecule reaction studies using pulsed field ionization photoelectron-secondary ion coincidence method

Author(s) -

Xiao Qian,

T. Zhang,

C. Chang,

P. Wang,

C. Y. Ng,

Yu–Hui Chiu,

Dale J. Levandier,

J. Scott Miller,

Rainer A. Dressler,

Tomas Baer,

Darcy S. Peterka

Publication year - 2003

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.1599071

Subject(s) - photoionization , ion , atomic physics , ion source , diatomic molecule , ionization , physics , molecule , quantum mechanics

We have developed an octopole-quadrupole photoionization apparatus at the Advanced Light Source for absolute integral cross-section measurements of rovibrational-state-selected ion-molecule reactions. This apparatus consists of a high-resolution photoionization ion source, a wired ion gate lens, a dual radio-frequency (rf) octopole ion guide reaction gas cell, and a quadrupole mass spectrometer for reactant and product ion detection. The unique feature of this apparatus is the implementation of the high-resolution pulsed field ionization-photoelectron (PFI-PE)-photoion coincidence (PFI-PEPICO) technique, which has allowed the rotational-state selection of diatomic ions for ion-molecule reaction studies. The novel application of the wired ion gate lens for the rejection of false coincidence background ions is described. This application, along with the differential-ion-gate scheme, has made possible the measurements of rovibrational-state-selected absolute integral reaction cross sections for ion-molecule ...

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