Accession Number : ADA198538


Title :   Particle Subcycling in Pulsed-Power Simulations


Descriptive Note : Technical rept. 19 Apr 1984-18 Aug 1987,


Corporate Author : MISSION RESEARCH CORP NEWINGTON VA


Personal Author(s) : Goplen, Bruce ; Worl, Richard ; Brandenburg, John


Report Date : 30 SEP 1987


Pagination or Media Count : 39


Abstract : A particle subcycling algorithm has been developed for and tested in the MAGIC code. The objective is to achieve greater efficiency in pulsed-power simulations. The algorithm performs particle kinematics calculations using a time step which is smaller than the electromagnetic time step, thereby allowing orbit resolution in regions of high magnetic field. In testing this algorithm, an energy nonconserving instability was observed. This instability, named the subcycling cyclotron instability, has been verified analytically. Its immediate effect is to diminish the utility of the particle subcycling algorithm for the intended application.


Descriptors :   *ELECTROMAGNETIC PULSE SIMULATORS , *CYCLOTRON RESONANCE , SIMULATION , MAGNETIC FIELDS , STABILITY , RESOLUTION , DIODES(ELECTRON TUBES) , PULSES , POWER , ELECTROMAGNETISM , ALGORITHMS , KINEMATICS , TIME


Subject Categories : ELECTRICITY AND MAGNETISM
      ELECTROMAGNETIC PULSES


Distribution Statement : APPROVED FOR PUBLIC RELEASE