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  A coincidence velocity map imaging spectrometer for ions and high-energy electrons to study inner-shell photoionization of gas-phase molecules

Ablikim, U., Bomme, C., Osipov, T., Xiong, H., Obaid, R., Bilodeau, R. C., et al. (2019). A coincidence velocity map imaging spectrometer for ions and high-energy electrons to study inner-shell photoionization of gas-phase molecules. Review of Scientific Instruments, 90(5): 055103. doi:10.1063/1.5093420.

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Ablikim, Utuq1, Author
Bomme, Cedric1, Author
Osipov, Timur1, Author
Xiong, Hui1, Author
Obaid, Razib1, Author
Bilodeau, Rene C.1, Author
Kling, Nora G.1, Author
Dumitriu, Ileana1, Author
Augustin, Sven2, Author              
Pathak, Shashank1, Author
Schnorr, Kirsten2, Author              
Kilcoyne, David1, Author
Berrah, Nora1, Author
Rolles, Daniel1, Author
Affiliations:
1external, ou_persistent22              
2Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society, ou_2025284              

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 Abstract: We report on the design and performance of a double-sided coincidence velocity map imaging spectrometer optimized for electron-ion and ion-ion coincidence experiments studying inner-shell photoionization of gas-phase molecules with soft X-ray synchrotron radiation. The apparatus employs two microchannel plate detectors equipped with delay-line anodes for coincident, time-and position-resolved detection of photoelectrons and Auger electrons with kinetic energies up to 300 eV on one side of the spectrometer and photoions up to 25 eV per unit charge on the opposite side. We demonstrate its capabilities by measuring valence photoelectrons and ion spectra of neon and nitrogen and by studying channel-resolved photoelectron and Auger spectra along with fragment-ion momentum correlations for chlorine 2p inner-shell ionization of cis- and trans-1,2-dichloroethene. Published under license by AIP Publishing.

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 Dates: 2019-05-08
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1063/1.5093420
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Title: Review of Scientific Instruments
  Abbreviation : Rev. Sci. Instrum.
Source Genre: Journal
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Publ. Info: Melville, NY : AIP Publishing
Pages: - Volume / Issue: 90 (5) Sequence Number: 055103 Start / End Page: - Identifier: ISSN: 0034-6748
CoNE: https://pure.mpg.de/cone/journals/resource/991042742033452