Explosive Effervescence and Ablation of Polymethyl Methacrylate Under Irradiation with a Self-Focusing High-Current Electron Beam

The morphology of destructions occurring in polymethyl methacrylate under irradiation with the electron beam formed in the vacuum diode of an electron accelerator in the filamentation and self-focusing modes is investigated. It has been found that when a sample is exposed to radiation near the polym...

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Bibliographic Details
Published in:Russian physics journal 2023-06, Vol.66 (2), p.219-224
Main Authors: Oleshko, V. I., Tarasenko, V. F., Yakovlev, A. N., Nguyen, Van Vu
Format: Article
Language:English
Subjects:
Ablation
Analysis
Beamforming
Condensed Matter Physics
Effervescence
Electron beams
Hadrons
Heavy Ions
Irradiation
Lasers
Mathematical and Computational Physics
Microfracture
Nuclear Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Physics of Semiconductors and Dielectrics
Polymers
Polymethyl methacrylate
Polymethylmethacrylate
Theoretical
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Summary:The morphology of destructions occurring in polymethyl methacrylate under irradiation with the electron beam formed in the vacuum diode of an electron accelerator in the filamentation and self-focusing modes is investigated. It has been found that when a sample is exposed to radiation near the polymer ablation threshold, microfractures of rounded and more complex shapes with sizes of (5–50) μm are formed at depths of (40–80) μm. When the ablation threshold in the self-focusing spot is exceeded, a crater is formed on the periphery of which a corona from polymer fibers is observed. Mechanisms of forming local microstructures are analyzed.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-023-02928-x