Quasi-Mono-Energetic Electron Beams from a Laser–Driven Argon Clustered Gas Target for Radiation Medicine
Journal of medical physics and applied sciences is an international peer reviwed journal aiming to publish the most relevant and recent research works across the world. Medical Physicists will contribute to maintaining and improving the quality, safety and cost-effectiveness of healthcare services through patient-oriented activities requiring expert action, involvement or advice regarding the specification, selection, acceptance testing, commissioning, quality assurance/control and optimised clinical use of medical devices and regarding patient risks and protection from associated physical agents (e.g. x-rays, electromagnetic fields, laser light, radionuclides) including the prevention of unintended or accidental exposures; all activities will be based on current best evidence or own scientific research when the available evidence is not sufficient. Medical physics is also called biomedical physics, medical biophysics or applied physics in medicine is, generally speaking, the application of physics concepts, theories and methods to medicine or healthcare.
We are sharing one of the most cited article from our journal. Article entitled “Quasi-Mono-Energetic Electron Beams from a Laser–Driven Argon Clustered Gas Target for Radiation Medicine” was well written by Dr. Chen L.
Purpose: To propose a promising alternative for conventional accelerators for high energy electron radiation therapy by generating quasi-mono-energetic electron beams.
Methods: Electron beams with energy up to hundred MeV, 1.8% energy spread, 125 pC charges and a few mrad divergences have been achieved from a 3-mmlong clustered gas plasma, driven by laser pulse with peak power up to 100 TW. Optimization of experimental parameters, such as laser contrast and laser-plasma interaction timing leads to stable laser propagation and high-quality electron beams.
Results: Clustered gas, in addition to the self-focusing effect, owns two important features: local solid electron density and efficient absorption of ultra-short laser pulses. Therefore, high ionization levels and high electron densities could generate high-charge energetic electron beams. Our experiment has verified that clusters in the gas jet influence the laser propagation and Wakefield evolution, producing stable laser guiding and good quality electron beams.
Conclusion: The results demonstrated that the laser-driven clustered gas target provides a unique method for electron injection and has great potential in generating mono-energetic collimated electron beams with large beam charge. Stable and reproducible mono-energetic electron beams with sufficient electron intensities are required in medical applications, e.g., radiotherapy. Many engineering issues remain to be solved before clinical application, but laseraccelerated electron beams present a promising scheme for future radiation therapy.
Here is the link to view complete article: https://medicalphysics.imedpub.com/quasimonoenergetic-electron-beamsfrom-a-laserdriven-argon-clusteredgas-target-for-radiation-medicine.pdf
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Journal of Medical Physics and Applied Sciences