Bio-Medical Applications of the Electron-Beam Plasma
نویسنده
چکیده
The Electron-Beam Plasma (EBP) is generated by injecting an electron beam (EB) into a gaseous medium. The EBP composition is complex: generally it contains molecules, atoms, radicals and ions in stable and excited states, plasma electrons and injected beam electrons as well. At moderate pressures (Pm <10 kPa) the EBP is strongly nonequilibrium. It means that the function of the electron energy distribution in the EBP is non-Maxwellian and heavy plasma particles mentioned above are produced in super-equilibrium concentrations, i. e. very high densities of ionized and excited particles can be reached. As a result, the EBP appears to be chemically active even at low temperature. With respect to non-equilibrium plasmas generated in conventional ways (for instance, the plasma of gas discharges) the EBP has the following advantages:
منابع مشابه
Monte Carlo Simulation of a Linear Accelerator and Electron Beam Parameters Used in Radiotherapy
Introduction: In recent decades, several Monte Carlo codes have been introduced for research and medical applications. These methods provide both accurate and detailed calculation of particle transport from linear accelerators. The main drawback of Monte Carlo techniques is the extremely long computing time that is required in order to obtain a dose distribution with good statistical accuracy. ...
متن کاملLaser-driven electron beam and radiation sources for basic, medical and industrial sciences
To date active research on laser-driven plasma-based accelerators have achieved great progress on production of high-energy, high-quality electron and photon beams in a compact scale. Such laser plasma accelerators have been envisaged bringing a wide range of applications in basic, medical and industrial sciences. Here inheriting the groundbreaker's review article on "Laser Acceleration and its...
متن کاملRelativistic electRon-Beam tRanspoRt studies using HigH-Resolution, coHeRent tRansition Radiation imaging
LLE Review, Volume 118 68 Laser-generated relativistic electron beams have applications in compact, high-brightness laser–plasma particle accelerators,1 narrowband x-ray sources for medical applications,2 x-ray sources for ignition-scale, high-density inertial confinement fusion (ICF) target backlighter radiography,3 collimated electron beams for free-electron lasers,4 and collimated electron b...
متن کاملCell damaging by irradiating non-thermal plasma to the water: Mathematical modeling of chemical processes
Recently non-thermal plasma (NTP) is applied for many therapeutic applications. By NTP irradiating to the tissues or cell-lines, the water molecules (H2O) would be also activated leading to generate hydrogen peroxide (H2O2). By irradiating plasma to bio-solution, its main output including vacuum UV to UV causes the photolysis of H2O leading to generat...
متن کاملSolution of strongly nonlinear oscillator problem arising in Plasma Physics with Newton Harmonic Balance Method
In this paper, Newton Harmonic Balance Method (NHBM) is applied to obtain the analytical solution for an electron beam injected into a plasma tube where the magnetic field is cylindrical and increases towards the axis in inverse proportion to the radius. Periodic solution is analytically verified and consequently the relation between the Natural Frequency and the amplitude is obtained in an ana...
متن کامل