Authors: M El Kaouini H Chatei
Publish Date: 2011/11/17
Volume: 31, Issue: 4, Pages: 317-324
Abstract
A steady state twofluid model has been used to study the characteristics of the collisionless plasma sheath in the presence of an external magnetic field and by taking into account both the ion temperature and the ion drift velocity at the sheath edge The number and momentum equations of ions the Boltzmann distribution of electrons and Poisson equations are solved numerically The dependence of the Bohm magnetized sheath criterion to ion temperature is examined It is shown that the ion temperature has significant effects on the sheath characteristics such as ion velocity charged particles densities and electric potential In the specific orientations of the magnetic field it is found that by increasing the ion temperature the ions do not achieve energy and the kinetic energy of the ions in the depth direction reaches the specific value at bigger distance from the plasmasheath boundaryThis work was supported by the National Center for Scientific and Technical Research CNRST under contract URAC07 The authors would like to thank Pr Ali E Abdou of Department of Mechanical and Nuclear Engineering Kansas State University for helpful discussions
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