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Published on: May 9, 2020
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Generation and structure of extremely large clusters in pulsed jets
Daniela Rupp1, Marcus Adolph1, Leonie Flückiger1
1IOAP, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany.
The Journal of Chemical Physics
|August 3, 2014
Summary
Giant xenon clusters, far larger than predicted, were created using pulsed gas jets. These massive clusters, observed via X-ray imaging, suggest growth through particle coagulation.
Area of Science:
- Physics
- Materials Science
- Nanotechnology
Background:
- The Hagena scaling law predicts maximum xenon cluster sizes.
- Understanding cluster formation is crucial for various applications.
Purpose of the Study:
- To investigate the production of extremely large xenon clusters.
- To determine the growth mechanisms of these giant clusters.
Main Methods:
- Utilizing pulsed gas jets for cluster generation.
- Employing single-shot single-particle imaging with free-electron laser in Hamburg (FLASH) X-ray pulses.
- Analyzing X-ray scattering patterns to determine cluster size and substructure.
Main Results:
- Extremely large xenon clusters, exceeding Hagena scaling law predictions by orders of magnitude, were produced.
- Two distinct cluster size distributions were observed: a main plateau and an after-pulse of giant clusters.
- X-ray scattering revealed a grainy substructure in clusters with radii of several hundred nanometers.
Conclusions:
- Pulsed gas jets enable the formation of exceptionally large xenon clusters.
- Cluster coagulation is suggested as the growth mechanism for these giant clusters.
- Findings challenge existing scaling laws and offer new insights into cluster dynamics.
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