TY - JOUR AU - S. Datta AU - Lalit Kumar PY - 2008/11/01 Y2 - 2024/03/29 TI - Plasma Frequency Reduction Factor JF - Defence Science Journal JA - DSJ VL - 58 IS - 6 SE - Electronics & Communication Systems DO - 10.14429/dsj.58.1705 UR - https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/1705 AB - A simple formula for plasma frequency reduction factor for a solid cylindrical electron beam in a metallictunnel has been developed by means of a 3-D curve fitting to the standard results of Branch and Mihran withaccuracy > 1.7 per cent, over the parametric regime of normalised beam-radius and beam-filling factor applicablefor linear-beam microwave tubes.  An artificial neural network algorithm was used for the curve-fitting followingthe approach of universal approximation.  The formula is simple and amenable to easy computation, even usinga scientific calculator.Defence Science Journal, 2008, 58(6), pp.768-770, DOI:http://dx.doi.org/10.14429/dsj.58.1705 ER -