3 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Qin, H."  
Results: 1 - 3
open access

Critical issues for high-brightness heavy-ion beams- prioritized

Description: This study group was initiated to consider whether there were any ''show-stopper'' issues with accelerators for heavy-ion warm-dense matter (WDM) and heavy-ion inertial fusion energy (HIF), and to prioritize them. Showstopper issues would appear as limits to beam current; that is, the beam would be well-behaved below the current limit, and significantly degraded in current or emittance if the current limit were exceeded at some region of an accelerator. We identified 14 issues: 1-6 could be add… more
Date: February 28, 2007
Creator: Molvik, A. W.; Cohen, R.; Davidson, R.; Faltens, A.; Friedman, A.; Grisham, L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Variational Symplectic Integrator for Long-Time Simulations of the Guiding-Center Motion of Charged Particles in General Magnetic Fields

Description: A variational symplectic integrator for the guiding-center motion of charged particles in general magnetic fields is developed for long-time simulation studies of magnetized plasmas. Instead of discretizing the differential equations of the guiding-center motion, the action of the guiding-center motion is discretized and minimized to obtain the iteration rules for advancing the dynamics. The variational symplectic integrator conserves exactly a discrete Lagrangian symplectic structure, and has … more
Date: February 11, 2008
Creator: Qin, H. & Guan, X.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Short Introduction to General Gyrokinetic Theory

Description: Interesting plasmas in the laboratory and space are magnetized. General gyrokinetic theory is about a symmetry, gyro-symmetry, in the Vlasov-Maxwell system for magnetized plasmas. The most general gyrokinetic theory can be geometrically formulated. First, the coordinate-free, geometric Vlasov-Maxwell equations are developed in the 7-D phase space, which is defined as a fiber bundle over the space-time. The Poincar{copyright}-Cartan-Einstein 1-form pullbacked onto the 7-D phase space determines … more
Date: February 14, 2005
Creator: Qin, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen