Spectrally resolved ion imaging from laser produced plasmas using CR-39 detectors

Rahul, S. V. and Kumar, Rakesh Y. and Sairam, T. and Sabui, Ratul and et al, . (2021) Spectrally resolved ion imaging from laser produced plasmas using CR-39 detectors. AIP Advances, 11 (1). pp. 1-11. ISSN 2158-3226

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Intense laser-produced plasmas generate bright, ultrashort bursts of accelerated ions. Reducing the required laser intensity and increasing the repetition rate of the laser to generate high energy ions is important, and mesoscopic particle targets are an attractive option to address this issue. Newer experimental strategies to measure ion energies and their angular distribution are needed in studies of such systems. In this paper, we outline a method to simultaneously measure these quantities using a single CR39 film. Although CR-39 detectors are known for ion imaging or spectroscopy, combining these specially for lower ion energies and applications to low-intensity laser experiments is not common. The paradigm chosen in our study is to consider the spatial distribution of nuclear tracks on a CR-39 sheet, while simultaneously separating them by their track diameter. Our method achieves an energy resolution of about 100 keV and a spatial resolution of tens of micrometers. In addition, ion species other than protons, i.e., carbon and oxygen, can also be imaged in an energy-resolved manner. © 2021 Author(s).

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Item Type: Article
Additional Information: We thank the DAE for all financial support for the experiments. The advice of Dr. C. P. Safvan and Dr. Pragya Bhatt from the IUAC for beam tuning methods on the ECR ion source at the IUAC is gratefully acknowledged. We wish to thank members of Dr. Apro-tim Mazumdar’s and Dr. T. N. Narayanan’s laboratory in the TIFR for their help with the microscopy and the chemistry lab facility. We thank P. P. Rajeev for his help in many stages of this work. M.K. also acknowledges the DAE-SRC-OI grant.
Uncontrolled Keywords: Accelerated ions; Energy resolutions; Experimental strategy; High-energy ions; Laser intensities; Low-intensity lasers; Mesoscopic particles; Spatial resolution
Subjects: Physics
Divisions: Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 30 Sep 2022 11:23
Last Modified: 30 Sep 2022 11:23
URI: http://raiith.iith.ac.in/id/eprint/10746
Publisher URL: http://doi.org/10.1063/5.0031930
OA policy: https://v2.sherpa.ac.uk/id/publication/18839
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