Secondary ion emission from ethanol microdroplets induced by fast heavy ions

29th International Conference on Photonic, Electronic, and Atomic Collisions

Majima, T.^1,2 ; Kitajima, K.^2 ; Nishio, T.^2 ; Tsuchida, H.^1,2 ; Itoh, A.^1,2

Quantum Science and Engineering Center, Kyoto University, Uji

611-0011, Japan^1

Department of Nuclear Engineering, Kyoto University, Kyoto

615-8540, Japan^2

关键词: Coincidence measurement;    Collision interaction;    High-vacuum conditions;    Liquid microdroplets;    Production mechanisms;    Secondary electrons;    Secondary ion emission;    Time-of-flight mass spectra;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/1/012021/pdf
DOI  :  10.1088/1742-6596/635/1/012021

来源: IOP

【 摘 要 】

We have developed a new experimental setup that allowed us to study collision interactions between fast ions and liquid microdroplets under a high vacuum condition. Microdroplets of ethanol are irradiated with 1.0-MeV H+and 2.0-MeV C2+ions. The size distribution of the droplets is evaluated from energy-loss measurements of projectile ions penetrating through the microdroplets. We obtain time-of-flight mass spectra of secondary ions from ethanol droplets. It is demonstrated that coincidence measurements with secondary electrons can distinguish specific ions produced in collisions with the droplets. Production mechanisms of H3O+, C4H9O+, (C2H5)2OH+in the liquid ethanol are discussed.