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  Momentum spectrometer for electron-electron coincidence studies on superconductors

Wallauer, R., Voss, S., Foucar, L., Bauer, T., Schneider, D., Titze, J., et al. (2012). Momentum spectrometer for electron-electron coincidence studies on superconductors. Review of Scientific Instruments, 83(10): 103905, pp. 1-7. doi:10.1063/1.4754470.

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 Creators:
Wallauer, Robert, Author
Voss, Stefan, Author
Foucar, Lutz1, Author           
Bauer, Tobias, Author
Schneider, Deborah, Author
Titze , Jasmin, Author
Ulrich, Birte, Author
Kreidi, Katharina, Author
Neumann, Nadine, Author
Havermeier, Tilo, Author
Schöffler, Markus, Author
Jahnke, Till, Author
Czasch, Achim, Author
Schmidt, Lothar, Author
Kanigel, Amit, Author
Campuzano, Juan Carlos, Author
Jeschke, Harald, Author
Valenti, Roser, Author
Müller, Andreas, Author
Berner, Götz, Author
Sing, Michael, AuthorClaessen, Ralph, AuthorSchmidt-Böcking, Horst, AuthorDörner, Reinhard, Author more..
Affiliations:
1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: We present a new experimental setup to study electron-electron coincidences from superconducting surfaces. In our approach, electrons emitted from a surface are projected onto a time- and position-sensitive microchannel plate detector with delayline position readout. Electrons that are emitted within 2 π solid angle with respect to the surface are detected in coincidence. The detector used is a hexagonal delayline detector with enhanced multiple hit capabilities. It is read out with a Flash analog-to-digital converter. The three-dimensional momentum vector is obtained for each electron. The intrinsic dead time of the detector has been greatly reduced by implementing a new algorithm for pulse analysis. The sample holder has been matched to fit the spectrometer while being capable of cooling down the sample to 4.5 K during the measurement and heating it up to 420 K for the cleaning procedure.

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Language(s): eng - English
 Dates: 2012-08-102012-09-092012-10-01
 Publication Status: Issued
 Pages: -
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 Rev. Type: Peer
 Identifiers: DOI: 10.1063/1.4754470
Other: 7977
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Title: Review of Scientific Instruments
Source Genre: Journal
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Publ. Info: AIP Publishing and AIP Member Societies
Pages: - Volume / Issue: 83 (10) Sequence Number: 103905 Start / End Page: 1 - 7 Identifier: ISSN: 0034-6748