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Title: A Coincidence Velocity Map Imaging Spectrometer for Ions and High-Energy Electrons to Study Inner-Shell Photoionization of Gas-Phase Molecules

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 utilizes two microchannel plate detectors equipped with delay-line anodes for coincident, time- and position-resolved detection of photo- 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 observe its capabilities by measuring valence photoelectron 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.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [4];  [7];  [4];  [8];  [9];  [10];  [11];  [12];  [4];  [10]
  1. Kansas State Univ., Manhattan, KS (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
  4. Univ. of Connecticut, Storrs, CT (United States)
  5. J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Connecticut, Storrs, CT (United States)
  8. Hobart and William Smith Colleges, Geneva, NY (United States)
  9. Kansas State Univ., Manhattan, KS (United States); Max Planck Inst. for Nuclear Physics, Heidelberg (Germany)
  10. Kansas State Univ., Manhattan, KS (United States)
  11. Max Planck Inst. for Nuclear Physics, Heidelberg (Germany); Univ. of California, Berkeley, CA (United States)
  12. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Kansas State Univ., Manhattan, KS (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
OSTI Identifier:
1508084
Grant/Contract Number:  
FG02-86ER13491; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Review of scientific instruments
Additional Journal Information:
Journal Volume: 90; Journal Issue: 5; Journal ID: ISSN 0034--6748
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; Velocity Map Imaging; photoionization; synchrotron radiation; electron-ion coincidences; photoelectron spectroscopy; ion momentum imaging

Citation Formats

Ablikim, Utuq, Bomme, C'edric, Savelyev, Evgeny, Xiong, Hui, Kushawaha, Rajesh, Osipov, Timur, Obaid, Razib, Bilodeau, Ren'e, Kling, Nora, Dumitriu, Ileana, Augustin, Sven, Pathak, Shashank, Schnorr, Kirsten, Kilcoyne, David, Berrah, Nora, and Rolles, Daniel. A Coincidence Velocity Map Imaging Spectrometer for Ions and High-Energy Electrons to Study Inner-Shell Photoionization of Gas-Phase Molecules. United States: N. p., 2019. Web. doi:10.1063/1.5093420.
Ablikim, Utuq, Bomme, C'edric, Savelyev, Evgeny, Xiong, Hui, Kushawaha, Rajesh, Osipov, Timur, Obaid, Razib, Bilodeau, Ren'e, Kling, Nora, Dumitriu, Ileana, Augustin, Sven, Pathak, Shashank, Schnorr, Kirsten, Kilcoyne, David, Berrah, Nora, & Rolles, Daniel. A Coincidence Velocity Map Imaging Spectrometer for Ions and High-Energy Electrons to Study Inner-Shell Photoionization of Gas-Phase Molecules. United States. doi:10.1063/1.5093420.
Ablikim, Utuq, Bomme, C'edric, Savelyev, Evgeny, Xiong, Hui, Kushawaha, Rajesh, Osipov, Timur, Obaid, Razib, Bilodeau, Ren'e, Kling, Nora, Dumitriu, Ileana, Augustin, Sven, Pathak, Shashank, Schnorr, Kirsten, Kilcoyne, David, Berrah, Nora, and Rolles, Daniel. Tue . "A Coincidence Velocity Map Imaging Spectrometer for Ions and High-Energy Electrons to Study Inner-Shell Photoionization of Gas-Phase Molecules". United States. doi:10.1063/1.5093420.
@article{osti_1508084,
title = {A Coincidence Velocity Map Imaging Spectrometer for Ions and High-Energy Electrons to Study Inner-Shell Photoionization of Gas-Phase Molecules},
author = {Ablikim, Utuq and Bomme, C'edric and Savelyev, Evgeny and Xiong, Hui and Kushawaha, Rajesh and Osipov, Timur and Obaid, Razib and Bilodeau, Ren'e and Kling, Nora and Dumitriu, Ileana and Augustin, Sven and Pathak, Shashank and Schnorr, Kirsten and Kilcoyne, David and Berrah, Nora and Rolles, Daniel},
abstractNote = {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 utilizes two microchannel plate detectors equipped with delay-line anodes for coincident, time- and position-resolved detection of photo- 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 observe its capabilities by measuring valence photoelectron 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.},
doi = {10.1063/1.5093420},
journal = {Review of scientific instruments},
number = 5,
volume = 90,
place = {United States},
year = {2019},
month = {4}
}

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This content will become publicly available on April 23, 2020
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