Performance of laminar-type holographic grating for a soft x-ray flat-field spectrograph in the 0.7–6 nm region

2003 ◽  
Vol 74 (2) ◽  
pp. 1156-1158 ◽  
Author(s):  
Masato Koike ◽  
Kazuo Sano ◽  
Eric Gullikson ◽  
Yoshihisa Harada ◽  
Hideki Kumata
Keyword(s):  
Holographic Grating ◽  
X Ray ◽  
Flat Field

Varied-line-spacing laminar-type holographic grating for the standard soft x-ray flat-field spectrograph

2000 ◽  
Author(s):  
Masato Koike ◽  
Takeshi Namioka ◽  
Eric M. Gullikson ◽  
Yoshihisa Harada ◽  
Sadayuki Ishikawa ◽  
...  
Keyword(s):  
Holographic Grating ◽  
X Ray ◽  
Flat Field ◽  
Line Spacing

Fabrication and evaluation of a wideband multilayer laminar-type holographic grating for use with a soft-x-ray flat-field spectrograph in the region of 17 keV

2007 ◽  
Vol 46 (28) ◽  
pp. 7054 ◽  
Author(s):  
Takashi Imazono ◽  
Masahiko Ishino ◽  
Masato Koike ◽  
Hiroyuki Sasai ◽  
Kazuo Sano
Keyword(s):  
Holographic Grating ◽  
X Ray ◽  
Flat Field

scholarly journals Time-resolved X-ray spectroscopy of optical-field-ionized plasmas

1995 ◽  
Vol 13 (4) ◽  
pp. 459-468 ◽  
Author(s):  
S. Borgström ◽  
T. Starczewski ◽  
S. Svanberg ◽  
C.-G. Wahlström ◽  
E. Fill ◽  
...  
Keyword(s):  
Optical Field ◽  
Field Ionization ◽  
Pronounced Difference ◽  
Time Resolved ◽  
X Ray ◽  
Temporal Shape ◽  
Slow Decay ◽  
Flat Field ◽  
Nitrogen Plasmas ◽  
Institute Of Technology

The time-dependent soft X-ray emission of helium and nitrogen plasmas generated by optical-field ionization is reported. The experiments were carried out by focusing pulses of the high-power Ti:sapphire laser of the Lund Institute of Technology (λ = 796 nm, pulse duration 150 fs, pulse energy 150 mJ) to a 50-μm diameter spot close to a nozzle, using He and N2 as target gases. The emission on He+, N4+, and N3+ resonance lines was recorded by means of a flat-field grating spectrometer coupled to an X-ray streak camera. A pronounced difference in the temporal shape of the emission of the Lyman-α line of hydrogen-like helium and of the 2p−3d resonance lines of lithium-like and beryllium-like nitrogen was observed. The helium line exhibited an initial spike followed by a slow revival of the emission, whereas the nitrogen lines showed a slow decay after a fast initial rise. These observations are explained with the help of simulations.

Correcting spatial distortions and nonuniform response in area detectors

1992 ◽  
Vol 25 (5) ◽  
pp. 549-558 ◽  
Author(s):  
M. Stanton ◽  
W. C. Phillips ◽  
Y. Li ◽  
K. Kalata
Keyword(s):  
Incident Beam ◽  
Distortion Correction ◽  
Lookup Table ◽  
Optical Components ◽  
X Ray ◽  
Flat Field ◽  
Intensity Response ◽  
Incident Beam Intensity ◽  
Software And Hardware ◽  
Local Distortions

Software and hardware methods have been developed to correct images for spatial and intensity distortions produced by optical and electro-optical components in X-ray area detectors. Spatial distortions are divided into two types: gross distortions produced by the inherent properties of the detector components and local distortions formed by irregularities in the components. Intensity distortions are separated into three types: those caused by background nonuniformity; those resulting from pixel-dependent nonuniform intensity response; and those resulting from time-dependent variations in background and incident beam intensity. From background, flat-field, reference and mask images, `forward' and `reverse' interpolation tables are generated to correct for spatial distortions and a lookup table is generated to correct for nonuniform sensitivity. The routines have been used successfully on four different area detectors to correct entire images or to correct intensities of individual Bragg peaks. The spatial-distortion correction is good to within 0.1 pixels and the nonuniformity correction to ≲ 2%.

Flat field concave holographic grating with broad spectral region and moderately high resolution

2012 ◽  
Vol 51 (4) ◽  
pp. 509 ◽  
Author(s):  
Jian Fen Wu ◽  
Yong Yan Chen ◽  
Tai Sheng Wang
Keyword(s):  
High Resolution ◽  
Spectral Region ◽  
Holographic Grating ◽  
Flat Field

Design of multi-area grating for soft x-ray flat-field spectrograph

2015 ◽  
Vol 54 (18) ◽  
pp. 5675 ◽  
Author(s):  
Huoyao Chen ◽  
Zhengkun Liu ◽  
Ying Liu ◽  
Qingbo Wang ◽  
Tao Yi ◽  
...  
Keyword(s):  
X Ray ◽  
Flat Field

Comparison of mechanically ruled versus holographically varied line-spacing gratings for a soft-x-ray flat-field spectrograph

1999 ◽  
Vol 38 (19) ◽  
pp. 4001 ◽  
Author(s):  
Takashi Yamazaki ◽  
Eric Gullikson ◽  
Noboru Miyata ◽  
Masato Koike ◽  
Yoshihisa Harada ◽  
...  
Keyword(s):  
X Ray ◽  
Flat Field ◽  
Line Spacing
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