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A rotatable electron spectrometer for multicoincidence experiments
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Surface and Interface Science.
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2010 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 81, no 6, 063112- p.Article in journal (Refereed) Published
Abstract [en]

We have developed a rotatable hemispherical spectrometer with good energy and angular resolution, which can be positioned with the lens axis arbitrarily within a solid angle of 1 pi. The collection angle of the emitted electrons with respect to the polarization axis of the light is set by means of a three-axes goniometer, operating under vacuum. An important requirement for this setup was the possibility to perform coincidences between the electron analyzed by the spectrometer and one or several other particles, such as ions, electrons, or photons. The lens system and the hemispheres have been designed to accommodate such experimental demands, regarding parameters such as the resolving power, the acceptance angle, or the width of the kinetic energy window which can be recorded for a given pass energy. We have chosen to detect the impact position of the electron at the focal plane of the hemispherical analyzer with a delay line detector and a time-to-digital converter as acquisition card rather than using a conventional charge-coupled device camera.

Place, publisher, year, edition, pages
2010. Vol. 81, no 6, 063112- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-135755DOI: 10.1063/1.3449333ISI: 000280102200012OAI: oai:DiVA.org:uu-135755DiVA: diva2:375563
Available from: 2010-12-08 Created: 2010-12-08 Last updated: 2011-02-23Bibliographically approved

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