Progress and research at the Shanghai EBIT

2008 ◽  
Vol 86 (1) ◽  
pp. 321-325 ◽  
Author(s):  
W Hu ◽  
Y Fu ◽  
P Gong ◽  
K Yao ◽  
D Lu ◽  
...  
Keyword(s):  
Charge State ◽  
Beam Diameter ◽  
Short Discussion ◽  
Preliminary Measurement ◽  
Ion Density ◽  
X Ray ◽  
Operational Conditions ◽  
Charge State Distributions ◽  
Ion Cloud ◽  
Electron Beam Diameter

In this report, a brief description of the current progress at the Shanghai EBIT project is presented. This is followed by a short discussion of the measurement of various parameters (electron beam diameter and ion density) under a number of operational conditions. A brief introduction to di-electronic recombination measurements for highly ionized xenon is given. Next, we present a preliminary measurement of the time dependence of xenon X-ray emission lines. Finally, a comparison of calculated and experimental charge-state distributions is given. This shows the influence of multi-electron capture and different distributions of the ion cloud on the charge state distribution.PACS Nos.: 41.85.–p; 34.80.Kw; 34.80Lx

Deducing the Electron-Beam Diameter in a Laser-Plasma Accelerator Using X-Ray Betatron Radiation

2012 ◽  
Vol 108 (7) ◽  
Author(s):  
Michael Schnell ◽  
Alexander Sävert ◽  
Björn Landgraf ◽  
Maria Reuter ◽  
Maria Nicolai ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Plasma ◽  
Plasma Accelerator ◽  
Beam Diameter ◽  
X Ray ◽  
Laser Plasma Accelerator ◽  
Electron Beam Diameter

The spatial resolution of x-ray microanalysis in thin foils

1991 ◽  
Vol 49 ◽  
pp. 472-473
Author(s):  
D. B. Williams ◽  
J. R. Michael ◽  
J. I. Goldstein ◽  
A. D. Romig
Keyword(s):  
Spatial Resolution ◽  
Thin Foil ◽  
Beam Specimen ◽  
Beam Diameter ◽  
Worst Case ◽  
X Ray ◽  
Thin Foils ◽  
Elastic Scatter ◽  
Electron Beam Diameter ◽  
Beam Broadening

The spatial resolution of x-ray microanalysis in a thin foil is determined by the size of the beam-specimen interaction volume. This volume is a combination of the incident electron beam diameter (d) and the beam broadening (b) due to elastic scatter within the specimen. Definitions of spatial resolution have already been proposed on this basis but all present a worst case value for the resolution based on the dimensions of the beam emerging from the exit face of the foil.

Correlation of post-foil Ne Kα X-ray emission with empirical charge state distributions

1977 ◽  
Vol 63 (3) ◽  
pp. 254-256 ◽  
Author(s):  
Forrest Hopkins ◽  
Nelson Cue ◽  
Vincent Dutkiewicz
Keyword(s):  
Charge State ◽  
X Ray ◽  
Charge State Distributions

Charge-state distributions and the population of x-ray emitting states

1979 ◽  
Vol 291 (2) ◽  
pp. 117-128 ◽  
Author(s):  
R. Schul� ◽  
H. Stafast ◽  
K. Bethge
Keyword(s):  
Charge State ◽  
X Ray ◽  
Charge State Distributions

scholarly journals Methods of charge-state analysis of fast ions inside matter based on their X-ray spectral distribution

2002 ◽  
Vol 20 (3) ◽  
pp. 479-483 ◽  
Author(s):  
F.B. ROSMEJ ◽  
R. MORE ◽  
O.N. ROSMEJ ◽  
J. WIESER ◽  
N. BORISENKO ◽  
...  
Keyword(s):  
Charge State ◽  
Spectral Distribution ◽  
Function Theory ◽  
Charge State Distribution ◽  
Distribution Model ◽  
Profile Function ◽  
X Ray ◽  
Fast Ions ◽  
Charge State Distributions ◽  
A Charge

The X-ray spectral distribution of swift heavy Ti and Ni ions (11 MeV/u) observed inside aerogels (ρ = 0.1 g/cm3) and dense solids (quartz, ρ = 2.23 g/cm3) indicates a strong presence of simultaneous 3–5 charge states with one K-hole. We show that the theoretical analysis can be split into two tasks: first, the treatment of complex autoionizing states together with the originating spectral distribution, and, second, a charge-state distribution model. Involving the generalized line profile function theory, we discuss attempts to couple charge-state distributions.

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