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Datum
2021-04-21Autor
Ozga, ChristianHonisch, CarolinSchmidt, PhilippHolzapfel, XaverZindel, ChristinaKüstner-Wetekam, CatmarnaRichter, ClemensHergenhahn, UweEhresmann, ArnoKnie, AndréHans, AndreasMetadata
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Aufsatz
Photon–electron coincidence experiments at synchrotron radiation facilities with arbitrary bunch modes
Zusammenfassung
We report the adaptation of an electron–photon coincidence detection scheme to the multibunch hybrid mode of the synchrotron radiation source BESSY II (Helmholtz-Zentrum Berlin). Single-event-based data acquisition and evaluation, combined with the use of relative detection times between the coincident particles, enable the acquisition of proper coincidence signals from a quasi-continuous excitation pattern. The background signal produced by accidental coincidences in the time difference representation is modeled using the non-coincident electron and photon spectra. We validate the method by reproducing previously published results, which were obtained in the single bunch mode, and illustrate its usability for the multibunch hybrid mode by investigating the photoionization of CO₂ into CO₂+ B satellite states, followed by subsequent photon emission. The radiative lifetime obtained and the electron binding energy are in good agreement with earlier publications. We expect this method to be a useful tool to extend the versatility of coincident particle detection to arbitrary operation modes of synchrotron radiation facilities and other excitation sources without the need for additional experimental adjustments.
Zitierform
In: Review of Scientific Instruments Volume 92 / Issue 4 (2021-04-21) eissn:1089-7623Förderhinweis
Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem VerlagZitieren
@article{doi:10.17170/kobra-202110284978,
author={Ozga, Christian and Honisch, Carolin and Schmidt, Philipp and Holzapfel, Xaver and Zindel, Christina and Küstner-Wetekam, Catmarna and Richter, Clemens and Hergenhahn, Uwe and Ehresmann, Arno and Knie, André and Hans, Andreas},
title={Photon–electron coincidence experiments at synchrotron radiation facilities with arbitrary bunch modes},
journal={Review of Scientific Instruments},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/13415 3000 Ozga, Christian 3010 Honisch, Carolin 3010 Schmidt, Philipp 3010 Holzapfel, Xaver 3010 Zindel, Christina 3010 Küstner-Wetekam, Catmarna 3010 Richter, Clemens 3010 Hergenhahn, Uwe 3010 Ehresmann, Arno 3010 Knie, André 3010 Hans, Andreas 4000 Photon–electron coincidence experiments at synchrotron radiation facilities with arbitrary bunch modes / Ozga, Christian 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/13415=x R 4204 \$dAufsatz 4170 5550 {{Datenerfassung}} 5550 {{Lumineszenz}} 5550 {{Fotoionisation}} 5550 {{Auger-Effekt}} 5550 {{Synchrotronstrahlung}} 7136 ##0##http://hdl.handle.net/123456789/13415
2021-11-29T14:42:47Z 2021-11-29T14:42:47Z 2021-04-21 doi:10.17170/kobra-202110284978 http://hdl.handle.net/123456789/13415 Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlag eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ coincidence counting data acquisition luminescence photoionization auger effect synchrotron radiation 530 Photon–electron coincidence experiments at synchrotron radiation facilities with arbitrary bunch modes Aufsatz We report the adaptation of an electron–photon coincidence detection scheme to the multibunch hybrid mode of the synchrotron radiation source BESSY II (Helmholtz-Zentrum Berlin). Single-event-based data acquisition and evaluation, combined with the use of relative detection times between the coincident particles, enable the acquisition of proper coincidence signals from a quasi-continuous excitation pattern. The background signal produced by accidental coincidences in the time difference representation is modeled using the non-coincident electron and photon spectra. We validate the method by reproducing previously published results, which were obtained in the single bunch mode, and illustrate its usability for the multibunch hybrid mode by investigating the photoionization of CO₂ into CO₂+ B satellite states, followed by subsequent photon emission. The radiative lifetime obtained and the electron binding energy are in good agreement with earlier publications. We expect this method to be a useful tool to extend the versatility of coincident particle detection to arbitrary operation modes of synchrotron radiation facilities and other excitation sources without the need for additional experimental adjustments. open access Ozga, Christian Honisch, Carolin Schmidt, Philipp Holzapfel, Xaver Zindel, Christina Küstner-Wetekam, Catmarna Richter, Clemens Hergenhahn, Uwe Ehresmann, Arno Knie, André Hans, Andreas doi:10.1063/5.0040179 Datenerfassung Lumineszenz Fotoionisation Auger-Effekt Synchrotronstrahlung publishedVersion eissn:1089-7623 Issue 4 Review of Scientific Instruments Volume 92 false
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