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Large Molecular Cluster Formation from Liquid Materials and Its Application to ToF-SIMS

Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan
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Academic Editor: Klaus-Dieter Liss
Quantum Beam Sci. 2021, 5(2), 10; https://0-doi-org.brum.beds.ac.uk/10.3390/qubs5020010
Received: 12 March 2021 / Accepted: 27 April 2021 / Published: 29 April 2021
(This article belongs to the Special Issue Surface Analysis of Materials With Charged-Particle Beams)
Since molecular cluster ion beams are expected to have various chemical effects, they are promising candidates for improving the secondary ion yield of Tof-SIMS. However, in order to clarify the effect and its mechanism, it is necessary to generate molecular cluster ion beams with various chemical properties and systematically examine it. In this study, we have established a method to stably form various molecular cluster ion beams from relatively small amounts of liquid materials for a long time by the bubbling method. Furthermore, we applied the cluster ion beams of water, methanol, methane, and benzene to the primary beam of SIMS and compared the molecular ion yields of aspartic acid. The effect of enhancing the yields of [M+H]+ ion of aspartic acid was found to be the largest for the water cluster and small for the methane and benzene clusters. These results indicate that the chemical effect contributes to the desorption/ionization process of organic molecules by the molecular cluster ion beam. View Full-Text
Keywords: SIMS; cluster ion beam; desorption/ionization; water cluster; molecular cluster; mixed cluster SIMS; cluster ion beam; desorption/ionization; water cluster; molecular cluster; mixed cluster
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MDPI and ACS Style

Moritani, K.; Nagata, S.; Tanaka, A.; Goto, K.; Inui, N. Large Molecular Cluster Formation from Liquid Materials and Its Application to ToF-SIMS. Quantum Beam Sci. 2021, 5, 10. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs5020010

AMA Style

Moritani K, Nagata S, Tanaka A, Goto K, Inui N. Large Molecular Cluster Formation from Liquid Materials and Its Application to ToF-SIMS. Quantum Beam Science. 2021; 5(2):10. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs5020010

Chicago/Turabian Style

Moritani, Kousuke, Shogo Nagata, Atsushi Tanaka, Kosuke Goto, and Norio Inui. 2021. "Large Molecular Cluster Formation from Liquid Materials and Its Application to ToF-SIMS" Quantum Beam Science 5, no. 2: 10. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs5020010

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