A simple technique for measuring electron beam angular divergence

1981 ◽  
Vol 18 (1) ◽  
pp. 58-59 ◽  
Author(s):  
J. A. Martin ◽  
M. G. Lagally
Keyword(s):  
Electron Beam ◽  
Simple Technique ◽  
Angular Divergence ◽  
Beam Angular Divergence

Energy Distribution in Electron Beams

1972 ◽  
Vol 30 ◽  
pp. 568-569
Author(s):  
Tamotsu Ohno
Keyword(s):  
Electron Beam ◽  
Energy Distribution ◽  
Cross Section ◽  
Integral Curve ◽  
Electron Beams ◽  
Electron Gun ◽  
Angular Divergence ◽  
Apparent Increase ◽  
Integral Width ◽  
The Cross

The energy distribution in an electron; beam from an electron gun provided with a biased Wehnelt cylinder was measured by a retarding potential analyser. All the measurements were carried out with a beam of small angular divergence (<3xl0-4 rad) to eliminate the apparent increase of energy width as pointed out by Ichinokawa.The cross section of the beam from a gun with a tungsten hairpin cathode varies as shown in Fig.1a with the bias voltage Vg. The central part of the beam was analysed. An example of the integral curve as well as the energy spectrum is shown in Fig.2. The integral width of the spectrum ΔEi varies with Vg as shown in Fig.1b The width ΔEi is smaller than the Maxwellian width near the cut-off. As |Vg| is decreased, ΔEi increases beyond the Maxwellian width, reaches a maximum and then decreases. Note that the cross section of the beam enlarges with decreasing |Vg|.

Investigation of the dynamics of the angular divergence of a radiation beam from a pulsed electron-beam-controlled CO laser

1985 ◽  
Vol 15 (2) ◽  
pp. 201-207
Author(s):  
Yu A Drozhbin ◽  
V D Zvorykin ◽  
Ivan B Kovsh ◽  
V V Trofimenko ◽  
A G Yarova
Keyword(s):  
Electron Beam ◽  
Angular Divergence ◽  
Radiation Beam ◽  
Co Laser ◽  
Pulsed Electron Beam

Reduction of angular divergence of internal electron beam of synchrotron

1980 ◽  
Vol 49 (1) ◽  
pp. 503-504
Author(s):  
Z. N. Esina ◽  
B. N. Kalinin
Keyword(s):  
Electron Beam ◽  
Angular Divergence ◽  
Internal Electron

scholarly journals Measurements of the beam angular divergence at U-2 accelerator

2016 ◽  
Author(s):  
A. V. Arzhannikov ◽  
M. A. Makarov ◽  
D. A. Samtsov ◽  
S. L. Sinitsky ◽  
V. D. Stepanov
Keyword(s):  
Angular Divergence ◽  
Beam Angular Divergence

The characteristic X-ray spectra of free atoms of metals

Open Physics ◽  
2003 ◽  
Vol 1 (2) ◽  
Author(s):  
P. Antsiferov
Keyword(s):  
Electron Beam ◽  
Solid State ◽  
Atomic Structure ◽  
Simple Technique ◽  
Structure Calculation ◽  
X Ray ◽  
Pulsed Electron Beam ◽  
Free Atoms ◽  
Beam Technique

AbstractThe article presents the results of a study of characteristic X-ray spectra of free atoms by means of a new simple technique. A pulsed electron beam was used for evaporation and to create inner-shell vacancies in free atoms of metals. The spectra were obtained with the help of an X-ray monochromator which allowed precise comparison between the free-atoms spectra and corresponding solid-state spectra. The shifts of the peaks were measured and found to be in the range Δλ/λ≈10−5–10−4. The K-, L- and M-series spectra were studied. A number of the free-atoms spectra revealed structure which was not resolved in the solid-state spectra and which is of interest for atomic structure calculation applications. This electron beam technique for the investigation of X-ray characteristic spectra of free atoms can be used for the refinement of X-ray wavelength standards.

scholarly journals Erratum to: A Calculation Model of Beam Angular Divergence for EAST Neutral Beam Injector

2010 ◽  
Vol 30 (1) ◽  
pp. 99-99
Author(s):  
Yongjian Xu ◽  
Chundong Hu ◽  
Yuanlai Xie ◽  
Lizhen Liang ◽  
Jun Li ◽  
...  
Keyword(s):  
Calculation Model ◽  
Neutral Beam ◽  
Angular Divergence ◽  
Neutral Beam Injector ◽  
Beam Angular Divergence
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