Journal Article

PUBDB-2021-02929

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Velocity map imaging spectrometer with an electric-field-matched gas capillary

Ranke, M.CFEL*Extern* ; Walther, S.CFEL*Extern* ; Gebert, T.CFEL*MPG* ; Dimitriou, A.CFEL*Extern* ; Sumfleth, M.Extern*DESY* ; Prandolini, M. J.Extern* ; Wieland, M. ; Drescher, M.Extern* ; Frühling, U. (Corresponding author)CFEL*Extern*

2021
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1361-6501/abeddc

Abstract: The design of a velocity map imaging (VMI) spectrometer is presented with a novel gas capillary integrated into the repeller electrode. The capillary is made of semiconductive lead glass, which replicates the electrostatic field of the VMI lenses. Thus, the target gas can be directly supplied to the interaction zone without degrading the VMI resolution. With this design, a high gas density and a large free aperture to focus long wavelength radiation into the VMI spectrometer have been achieved, which facilitates time resolved experiments with intense terahertz (THz)-light fields. The performance of the VMI spectrometer is demonstrated with momentum maps of electrons from multiphoton ionization of xenon and a first extreme ultraviolet-THz-streak experiment.

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Contributing Institute(s):

1. Forschungsgruppe für strukturelle Dynamik (MPSD)
2. MPSD (CFEL-QCM)
3. UNI/EXP (CFEL-FXP)
4. FS-Photon Science (FS-PS)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)
3. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2021

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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