Spatial and temporal pre-alignment of an X-ray split-and-delay unit by laser light interferometry

The “Imaging Plate”(IP) is a highly sensitive image recording plate for X-ray radiography. It has been ascertained that the IP has superior properties and high practicability as an image recording material in a TEM. The sensitivity, one of the properties, is about 3 orders higher than that of conventional photo film. The IP is expected to be applied to low dose techniques. In this paper, an estimation of the quantum noise on the TEM image which appears in case of low electron dose on the IP is reported.In this experiment, the JEM-2000FX TEM and an IP having the same size as photo film were used.Figure 1 shows the schematic diagram of the total system including the TEM used in this experiment. In the reader, He-Ne laser light is scanned across the IP, then blue light is emitted from the IP.

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Mosaicity and Wafer Bending in SiC Wafers as Measured by Double and Triple Crystal X-Ray Rocking Curve and Peak Position Maps

Materials Science Forum ◽

10.4028/www.scientific.net/msf.556-557.213 ◽

2007 ◽

Vol 556-557 ◽

pp. 213-218 ◽

Cited By ~ 1

Author(s):

K.W. Kirchner ◽

Kenneth A. Jones ◽

Michael A. Derenge ◽

Michael Dudley ◽

Adrian R. Powell

Keyword(s):

Laser Light ◽

Peak Position ◽

Etch Pit Density ◽

Normal Position ◽

Rocking Curve ◽

X Ray ◽

Etch Pit ◽

Density Map ◽

Beam Transmission ◽

Si Wafer

Double and triple crystal rocking curve and peak position maps are constructed for a 4HSiC wafer for the symmetric (0 0 0 8) reflection in the normal position, the same reflection for a sample rotated 90º, and an asymmetric (1 23 6) reflection for the wafer in the normal position. These measurements were corrected for the ‘wobble’ in the instrument by scanning a 4” (1 1 1) Si wafer and assuming that the Si wafer was perfect and attributing the variations in the measurements to instrumental error. The x-ray measurements are correlated with a cross polar image, etch pit density map, white beam transmission x-ray topograph, and a laser light scan.

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Study of second harmonic emissions for characterization of laser–plasma X-ray sources

Laser and Particle Beams ◽

10.1017/s0263034600011666 ◽

1998 ◽

Vol 16 (2) ◽

pp. 397-404 ◽

Cited By ~ 10

Author(s):

A. Giulietti ◽

C. Beneduce ◽

T. Ceccotti ◽

D. Giulietti ◽

L.A. Gizzi ◽

...

Keyword(s):

Laser Beam ◽

Transport Process ◽

Energy Transport ◽

Laser Light ◽

Second Harmonic ◽

Target Position ◽

Laser Pulses ◽

Strongly Correlated ◽

X Ray

An investigation of second harmonic (SH) and X-ray emissions from Al plasmas produced by 3-ns, 1.064-μm laser pulses at 1014 W/cm2 is reported. The SH and X-ray yields are strongly correlated as a function of the target position with respect to the laser beam focus. The SH originates from the underdense coronal plasma and has a filamentary source, while the X-ray source is uniform. The results suggest that, although the X-ray emission is significantly enhanced by the filamentation of the laser light in the corona, there is a smoothing effect in the energy transport process toward the overdense region.

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