Grasso, Giacomo and Rocchi, F. and Sumini, M. (2009) Development of a Particle-In-Cell code with Structured Adaptive Mesh Refinement for Plasma Focus devices breakdown simulation. Il nuovo cimento C, 32 (2). pp. 147-151. ISSN 1826-9885
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Abstract
The aim at simulating the breakdown phase of a Plasma Focus (PF) discharge follows the need to fully understand the dynamics of such device, in order to retrieve useful information for the design and optimization of the machine itself. PFs are compact devices able to generate, accelerate, compress and confine a plasma by means of strongly varying electric and magnetic fields. In the final phase of the discharge, the generated plasma collapses in a high density region (the focus) where nuclear reactions occur. The choice of the gases composing the plasma tunes the nuclear reactions in order to characterize the device as a possible neutron-free Short-Life Radioisotopes (SLRs) generator for PET (f.i. 18F and 15O), as well as a neutrons or collimated-electrons-beams source for radio-therapy applications. An electrostatic-collisional Particle-In-Cell (PIC) code for Plasma Focus devices (es-cPIF) has already been developed to investigate the breakdown phenomenon and the formation of the plasma seed, the preliminary plasma spot, within the device: the exact knowledge of the phase space distribution function (strongly deviating from the Maxwellian equilibrium one) is a fundamental basis indeed for the whole discharge simulation. In order to extend the present simulations towards the complete evolution of the plasma seed into a running plasma sheath, the code is being re-structured for strong parallelization and inclusion of Structured Adaptive Mesh Refinement (SAMR) capabilities. In this paper the development frame as well as the software design architecture are presented together with the features that will be provided by the new SAMRes-cPIF code.
| Item Type: | Article |
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| Uncontrolled Keywords: | Particle-in-cell method ; Z-pinches, plasma focus, and other pinch devices |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 25 Mar 2020 15:21 |
| Last Modified: | 25 Mar 2020 15:21 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/16530 |
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