42 citations · 85 across the 8 of their papers we have counts for
8 papers
Analysis and mitigation of pulse-pile-up tail artifacts in warm-plasma pulse-height X-ray spectra
Taosif Ahsan, Charles Swanson, Christopher Galea +4
Pulse pile-up in pulse-height energy analyzers increases when the incident rate of pulses increases relative to the inverse of the dead time per pulse of the detection system. Chan…
Plane strain optimization of conductor and structure grading in the inner leg of a Tokamak toroidal field coil
Charles PS Swanson
I present the results of the analytic plane strain optimization of the structure and conductor grading in the inner leg of a Tokamak toroidal field coil. The coil is assumed to be…
Electron heating in 2-D: combining Fermi-Ulam acceleration and magnetic-moment non-adiabaticity in a mirror-configuration plasma
C. P. S. Swanson, S. A. Cohen, C. A. Galea
We analyze a new mechanism for the creation and confinement of energetic electrons in a mirror-configuration plasma. A Fermi-Ulam-type process, driven by end-localized coherent ele…
The effect of rigid electron rotation on the Grad-Shafranov equilibria of a class of FRC devices
C. P. S. Swanson, S. A. Cohen
Rigid electron rotation of a fully penetrated Rotamak-FRC produces a pressure flux function that is more peaked than the Solov'ev flux function. This paper explores the implication…
Spontaneous multi-keV electron generation from Fermi acceleration and magnetic moment non-adiabaticity
C. Swanson, S. A. Cohen
X-ray emission shows the existence of multi-keV electrons in low-temperature, low-power, capacitively-coupled RF-heated magnetic-mirror plasmas that also contain a warm (300 eV) mi…
Using Poisson-regularized inversion of Bremsstrahlung emission to extract full EEDFs from x-ray pulse-height detector data
C. Swanson, P. Jandovitz, S. A. Cohen
We measured Electron Energy Distribution Functions (EEDFs) from below 200 eV to over 8 keV and spanning five orders-of-magnitude in intensity, produced in a low-power, RF-heated, t…
Modeling of reduced secondary electron emission yield from a foam or fuzz surface
Charles Swanson, Igor D. Kaganovich
Complex structures on a material surface can significantly reduce the total secondary electron emission yield from that surface. A foam or fuzz is a solid surface above which is pl…
Modeling of Reduced Effective Secondary Electron Emission Yield from a Velvet Surface
Charles Swanson, Igor D. Kaganovich
Complex structures on a material surface can significantly reduce total secondary electron emission from that surface. A velvet is a surface that consists of an array of vertically…