Improved transmission of electrostatic accelerator in a wide range of terminal voltages by controlling the focal strength of entrance acceleration tube

Lobanov, Nikolai R.; Tunningley, Thomas; Peter, Lars

doi:10.1016/j.nimb.2018.02.023

Cited by 3 publications

(1 citation statement)

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“…(i) 2D fit. Opening angle, length, and radii of the cones are determined by the application of a 2D fitting process on 1 The relative energy precision is estimated to be better than 0.1% [43,44]. 2 The maximum beam deflection due to the geometry of our experimental setup is estimated to be less than 0.08 • .…”

Section: Introductionmentioning

confidence: 99%

Analysis of nanometer-sized aligned conical pores using small-angle x-ray scattering

Hadley

Notthoff

Mota‐Santiago

et al. 2020

Phys. Rev. Materials

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Small-angle x-ray scattering (SAXS) was used to quantitatively study the morphology of aligned, monodisperse conical etched ion tracks in thin films of amorphous SiO 2 with aspect ratios of around 6 : 1 and in polycarbonate foils with aspect ratios of around 1000 : 1. This paper presents the measurement procedure and methods developed for the analysis of the scattering images and shows results obtained for the two material systems. To enable accurate parameter extraction from the data collected from conical scattering objects, a model fitting the two-dimensional (2D) detector images was developed. The analysis involved fitting images from a sequence of measurements with different sample tilts to minimize errors, which may have been introduced due to the experimental setup. The model was validated by the exploitation of the geometric relationship between the sample tilt angle and the cone opening angle, to an angle observed in the features of the SAXS images. We also demonstrate that a fitting procedure for 1D data extracted from the scattering images using a hard cylinder model can also be used to extract the cone size. The application of these techniques enables us to reconstruct the cone morphologies with unprecedented precision.

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Section: Introductionmentioning

confidence: 99%