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journal article·2018-11-01Open access

A co-axial velocity map imaging spectrometer for electrons

S. Li, E. G. Champenois, R. Coffee, Z. Guo, K. Hegazy, A. Kamalov, A. Natan, J. O’Neal, T. Osipov, M. Owens, D. Ray, D. Rich, P. Walter, A. Marinelli, J. P. Cryan

AIP Advances· Volume 8· Issue 11
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Source abstract

Abstract

We present the design of an electron velocity map imaging (VMI) spectrometer where the ionizing laser source propagates along the symmetry axis of the spectrometer. The co-axial geometry is useful in a variety of experiments, because it provides a unique 2-dimensional projection of the 3-dimensional electron momentum distribution. Initial simulations show that this co-axial VMI can work with both high energy (more than 100 eV) and low energy (tens of eV) electrons. We demonstrate the performance of this co-axial VMI spectrometer at the Linac Coherent Light Source X-ray Free Electron Laser facility.
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Research context

OpenAlex topics: Laser-Matter Interactions and Applications · Mass Spectrometry Techniques and Applications · Advanced Chemical Physics Studies

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Affiliations

Department of Physics, Stanford University 1 , Stanford, California 94305, USA

SLAC National Accelerator Laboratory 2 , Menlo Park, California 94025, USA

Stanford PULSE Institute, SLAC National Accelerator Laboratory 3 , Menlo Park, California 94025, USA

Linac Coherent Light Source, SLAC National Accelerator Laboratory 4 , Menlo Park, California 94025, USA

Department of Applied Physics, Stanford University 5 , Stanford, California 94305, USA

Funding

Accelerator and Detector Research · Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division · Robert H. Siemann Graduate fellowship · Scientific User Facility · U.S. Department of Energy

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