Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/117697
Title: Positron-annihilation lifetime spectroscopy using electron Bremsstrahlung
Author(s): Wagner, A.
Anwand, W.
Butterling, M.Look up in the Integrated Authority File of the German National Library
Cowan, T. E.
Fiedler, F.
Fritz, F.
Kempe, M.
Krause-Rehberg, Reinhard
Issue Date: 2015
Type: Article
Language: English
Abstract: A new type of an intense source of positrons for materials research has been set up at the superconducting electron linear. The source employs hard X-rays from electron- bremsstrahlung production generating energetic electron-positron pairs inside the sample under investigation. CW-operation allows performing experiments with significantly reduced pile-up artefacts in the detectors compared to pulsed mode operation in conventional accelerators. The high-resolution timing of the accelerator with bunch lengths below 10 ps full width at half maximum (FWHM) allows positron annihilation lifetime spectroscopy (PALS) measurements with high time resolution. A single-component annihilation lifetime of Kaptonhas been measured as (381.3 ± 0.3) ps. Employing segmented detectors for the detection of both annihilation photons allows for the first time to perform a 4D tomographic reconstruction of the annihilation sites including the annihilation lifetime.
URI: https://opendata.uni-halle.de//handle/1981185920/119657
http://dx.doi.org/10.25673/117697
Open Access: Open access publication
License: (CC BY 3.0) Creative Commons Attribution 3.0 Unported(CC BY 3.0) Creative Commons Attribution 3.0 Unported
Journal Title: Journal of physics. Conference Series
Publisher: IOP Publ.
Publisher Place: Bristol
Volume: 618
Original Publication: 10.1088/1742-6596/618/1/01204
Page Start: 1
Page End: 6
Appears in Collections:Open Access Publikationen der MLU

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