Preprint

PUBDB-2024-01759

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A versatile and transportable endstation for controlled molecule experiments

Jin, W.CFEL*DESY* ; Bromberger, H.CFEL*XFEL.EU*DESY* ; He, L.CFEL*Extern*XFEL.EU* ; Johny, M.CFEL*Extern*XFEL.EU* ; Vinklarek, I.CFEL*Extern*DESY* ; Dlugolecki, K.CFEL*XFEL.EU*DESY* ; Samartsev, A.CFEL*XFEL.EU*DESY* ; Calegari, F.DESY* ; Trippel, S. (Corresponding author)CFEL*XFEL.EU*DESY* ; Küpper, J. (Corresponding author)CFEL*XFEL.EU*DESY*

2024

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Please use a persistent id in citations: doi:10.3204/PUBDB-2024-01759

Report No.: arXiv:2406.16491

Abstract: We report on a new versatile transportable endstation for controlled molecule (eCOMO) experiments providing a combination of molecular beam purification by electrostatic deflection and simultaneous ion and electron detection using velocity-map imaging (VMI). The $b$-type electrostatic deflector provides spatial dispersion of species based on their effective-dipole-moment-to-mass ratio. This enables selective investigation of molecular rotational quantum states, conformers, and molecular clusters. Furthermore, the double-sided VMI spectrometer equipped with two high-temporal-resolution event-driven Timepix3 cameras provides detection of all generated ions independently of their mass-over-charge ratio and electrons. To demonstrate the potential of this novel apparatus, we present experimental results from our investigation of carbonyl sulfide (OCS) after ionization. Specifically, we provide the characterization of the molecular beam, electrostatic deflector, and electron- and ion-VMI spectrometer. The eCOMO endstation delivers a platform for ultrafast dynamics studies using a wide range of light sources from table-top lasers to free-electron-laser and synchrotron-radiation facilities. This makes it suitable for research activities spanning from atomic, molecular, and cluster physics, to energy science and chemistry, to structural biology.

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Contributing Institute(s):

1. CFEL-CMI (FS-CFEL-CMI)
2. beauftragt von UNI (UNI/CUI)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. MEDEA - Molecular Electron Dynamics investigated by IntensE Fields and Attosecond Pulses (641789) (641789)
3. DFG project G:(GEPRIS)390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
4. HIRS-0018 - Helmholtz-Lund International School - Intelligent instrumentation for exploring matter at different time and length scales (HELIOS) (2020_HIRS-0018) (2020_HIRS-0018)
5. 05K22GUA - Verbundprojekt 05K2022 - 2021-05992 UDIET: Ultraschnelle Dynamik des intermolekularen Energietransfers: elementare Schritte in Aerosolen und Flüssigchemie (BMBF-05K22GUA) (BMBF-05K22GUA)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2024

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