Fabrication and characteristics of novel graphite field emitters for application to electron-beam-pumped light sources

2007 ◽  
Vol 25 (2) ◽  
pp. 666 ◽  
Author(s):  
Kazufumi Shiozawa ◽  
Yoichiro Neo ◽  
Morihiro Okada ◽  
Takahiro Matsumoto ◽  
Masafumi Takahashi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Field Emitters

Electron-beam-pumped light sources using graphite nanoneedle field emitters and Si electron-transparent films

2007 ◽  
Vol 2 (3) ◽  
pp. 272-277
Author(s):  
Hidenori Mimura ◽  
Kazufumi Shiozawa ◽  
Yoichiro Neo ◽  
Morihiro Okada ◽  
Masafumi Takahasi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Transparent Films ◽  
Field Emitters

Fabrication and Characteristics of Novel Graphite Field-Emitters for Application to Electron-Beam Pumped Light Sources

2006 ◽  
Author(s):  
Kazufumi Shiozawa ◽  
Yoichiro Neo ◽  
Morihiro Okada ◽  
Masafumi Takahashi ◽  
Gen Hashiguchi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Field Emitters

Electron-beam-pumped Light Sources Using Field Emitters

2007 ◽  
Author(s):  
Tadahiro Sugiyama ◽  
Kazufumi Shiozawa ◽  
Sayaka Shimizu ◽  
Yoichiro Neo ◽  
Morihiro Okada ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Field Emitters

Electron-beam-pumped light sources using graphite nanoneedle field emitters and Si electron-transparent films

2007 ◽  
Vol 2 (3) ◽  
pp. v-vi
Author(s):  
Hidenori Mimura ◽  
Kazufumi Shiozawa ◽  
Yoichiro Neo ◽  
Morihiro Okada ◽  
Masafumi Takahashi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Transparent Films ◽  
Field Emitters

Fabrication and Characteristics of Sputter-Induced Carbon Nanoneedle Field Emitters and Si Electron-Transparent Films for Application to Electron-Beam-Pumped Light Sources

2006 ◽  
Vol 45 (No. 40) ◽  
pp. L1067-L1070 ◽  
Author(s):  
Kazufumi Shiozawa ◽  
Yoichiro Neo ◽  
Morihiro Okada ◽  
Masafumi Takahashi ◽  
Gen Hashiguchi ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Transparent Films ◽  
Field Emitters

scholarly journals Synchrotron Radiation Sources – Present Capabilities and Future Directions

1998 ◽  
Vol 5 (3) ◽  
pp. 168-175 ◽  
Author(s):  
Herman Winick
Keyword(s):  
Electron Beam ◽  
High Energy ◽  
Storage Rings ◽  
Light Sources ◽  
Beam Emittance ◽  
High Brightness ◽  
Performance Levels ◽  
Electron Sources ◽  
Short Period ◽  
Pass Through

Many of the more than 40 operational light sources around the world have achieved performance levels that exceed initial design goals. These accomplishments are reviewed, along with concepts and proposals for sources with performance levels exceeding those of present sources. These include storage rings with lower electron-beam emittance than present third-generation rings and free-electron lasers (FELs). It now appears that the highest performance sources will be based on linacs rather than storage rings. This is because emittance originates differently and scales differently with electron energy for rings and linacs, so that the lowest electron-beam emittance can be achieved in high-energy linacs equipped with high-brightness electron sources. Such electron beams can be used to provide X-ray beams with very high brightness and coherence in sub-picosecond pulses in a single pass through a small-gap short-period undulator by spontaneous emission, and with even higher beam brightness and coherence by stimulated coherent emission in an FEL. Designs for such FEL sources, and associated research and development, are underway at several laboratories.

Electron-beam control of the radiation emitted by injection light sources

1981 ◽  
Vol 11 (5) ◽  
pp. 674-675
Author(s):  
O V Bogdankevich ◽  
S A Bondar' ◽  
N A Borisov ◽  
D V Galchenkov ◽  
V F Pevtsov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Sources ◽  
Beam Control

scholarly journals Intercombination Transitions in the n = 4 Shell of Zn-, Ga-, and Ge-Like Ions of Elements Kr through Xe

Atoms ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 40 ◽  
Author(s):  
Elmar Träbert ◽  
Juan Santana ◽  
Pascal Quinet ◽  
Patrick Palmeri
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
State Of The Art ◽  
Light Sources ◽  
Electron Beam Ion Trap ◽  
Beam Foil ◽  
Cu And Zn

Earlier beam-foil measurements have targeted 4s-4p intercombination transitions in the Zn-, Ga- and Ge-like ions of Nb (Z=41), Mo (Z=42), Rh (Z=44), Ag (Z=47) and I (Z=53). At the time, the spectra were calibrated with literature data on prominent lines in the Cu- and Zn-like ions. Corresponding literature data on the intercombination transitions in Ga- and Ge-like ions were largely lacking, which caused some ambiguity in the line identifications. We review the (mostly computational) progress made since. We find that a consistent set of state-of-the-art computations of Ga- and Ge-like ions would be highly desirable for revisiting the beam-foil data and the former line identifications for the elements from Kr (Z=36) to Xe (Z=54). We demonstrate that the literature data for these two isoelectronic sequences are insufficient, and we contribute reference computations in the process. We discuss the option of electron beam ion trap measurements as an alternative to the earlier use of classical light sources, beam-foil interaction and laser-produced plasmas, with the example of Xe (Z=54).

scholarly journals Tunable High Spatio-Spectral Purity Undulator Radiation from a Transported Laser Plasma Accelerated Electron Beam

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
A. Ghaith ◽  
D. Oumbarek ◽  
E. Roussel ◽  
S. Corde ◽  
M. Labat ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Plasma ◽  
Second Harmonic ◽  
Spectral Signature ◽  
Light Sources ◽  
Spectral Brightness ◽  
Spectral Purity ◽  
Strong Electron ◽  
Undulator Radiation ◽  
Transport Line

AbstractUndulator based synchrotron light sources and Free Electron Lasers (FELs) are valuable modern probes of matter with high temporal and spatial resolution. Laser Plasma Accelerators (LPAs), delivering GeV electron beams in few centimeters, are good candidates for future compact light sources. However the barriers set by the large energy spread, divergence and shot-to-shot fluctuations require a specific transport line, to shape the electron beam phase space for achieving ultrashort undulator synchrotron radiation suitable for users and even for achieving FEL amplification. Proof-of-principle LPA based undulator emission, with strong electron focusing or transport, does not yet exhibit the full specific radiation properties. We report on the generation of undulator radiation with an LPA beam based manipulation in a dedicated transport line with versatile properties. After evidencing the specific spatio-spectral signature, we tune the resonant wavelength within 200–300 nm by modification of the electron beam energy and the undulator field. We achieve a wavelength stability of 2.6%. We demonstrate that we can control the spatio-spectral purity and spectral brightness by reducing the energy range inside the chicane. We have also observed the second harmonic emission of the undulator.

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