What's New - Tuesday, May 13, 2008

June 4, 2007

64 Bit Memory

June 11, 2007

3D FEM Improvements

June 18 2007

Wire Voltage

June 25, 2007

New Windings Options

July 2, 2007

Isosurface Plot Options

July 9, 2007

Output Format

July 16, 2007

Planes Manager

July 23, 2007

Selection of Points

July 30, 2007

Changes for Windows Vista

Aug 6, 2007

"Precondtioning" for Difficult Matrices

Sept. 3, 2007

Transient Voltage in 2D

Sept. 10, 2007

New Publication Citing MAGNETO

Oct. 28, 2007

Publication Citing COULOMB

Nov. 12, 2007

Publication Citing LORENTZ

Nov. 19, 2007

Two New Publications Citing LORENTZ

What's New on the Website from Nov. 19, 2007

Publication Citing LORENTZ

The Particle Trajectory Analysis External Papers has just had two new papers referencing LORENTZ added.

Phase-contrast x-ray imaging with a liquid-metal-jet-anode microfocus source

Appl. Phys. Lett. 91, 074104 (2007)

T. Tuohimaa, M. Otendal, and H. M. Hertz

Phase-contrast methods increase contrast, detail, and selectivity in x-ray imaging. Present compact x-ray sources do not provide the necessary spatial coherence with sufficient power to allow the laboratory-scale high-resolution phase-contrast imaging with adequate exposure times. In this letter, the authors demonstrate phase-contrast imaging with few-micron detail employing a compact ~6.5 µm spot liquid-metal-jet-anode high-brightness microfocus source. The 40 W source is operated at more than ten times higher electron-beam power density than present microfocus sources and is shown to provide sufficient spatial coherence as well as scalability to high power, thereby enabling the application of phase-contrast x-ray imaging with short exposure times in clinics and laboratories.

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High-intensity electron beam for liquid-metal-jet anode hard x-ray generation

Proceedings of SPIE

Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II

Volume 5918 (Sep. 10, 2005)

Tomi Tuohimaa, Mikael Otendal, and Hans M. Hertz

We report on our progress towards the experimental realization of a liquid-metal-jet-anode x-ray source with high brightness. We have previously shown that this electron-impact source has potential for very high x-ray brightness by combining small-spot high-flux operation of the electron beam with high-speed operation of the regenerative liquid-metal-jet anode. In the present paper we review the system and describe theoretical calculations for improving the 50 kV, 600 W electron-beam focussing to ~30 µm spot size. With such a system the power density on the liquid-metal-jet would be ~400 kW/mm2, i.e., more than an order of magnitude higher than the power density on a state-of-the-art rotating anode.