X-RAY EFFECTS ON THE NOISE PERFORMANCES OF 0.18 AND 0.25 μm CMOS PROCESSES FOR FRONT-END APPLICATIONS

The lateral coherence length is of the order of 100 µm at the `long' (145 m) ID19 beamline of the ESRF, which is mainly devoted to imaging. Most of the optical elements located along the X-ray path can thus act as `phase objects', and lead to spurious contrast and/or to coherence degradation, which shows up as an enhanced effective angular size of the source. Both the spurious contrast and the coherence degradation are detrimental for the images (diffraction topographs, tomographs, phase-contrast images) produced at this beamline. The problems identified and the way they were solved during the commissioning of ID19 are reported. More particularly, the role of the protection foils located in the front end, the beryllium windows, the filters and the monochromator defects (scratches, dust, small vibrations) is discussed.

Download Full-text

New x-ray pink-beam profile monitor system for the SPring-8 beamline front-end

Review of Scientific Instruments ◽

10.1063/1.4961548 ◽

2016 ◽

Vol 87 (8) ◽

pp. 083111 ◽

Cited By ~ 4

Author(s):

Sunao Takahashi ◽

Togo Kudo ◽

Mutsumi Sano ◽

Atsuo Watanabe ◽

Hiroo Tajiri

Keyword(s):

Beam Profile ◽

Monitor System ◽

X Ray ◽

Front End ◽

Beam Profile Monitor

Download Full-text

Quantitative Interpretation of Biological X-Ray Effects.

Experimental Biology and Medicine ◽

10.3181/00379727-33-8429p ◽

1936 ◽

Vol 33 (4) ◽

pp. 508-509 ◽

Cited By ~ 3

Author(s):

F. M. Uber

Keyword(s):

Quantitative Interpretation ◽

X Ray ◽

Ray Effects

Download Full-text

STUDIES ON X-RAY EFFECTS

Journal of Experimental Medicine ◽

10.1084/jem.33.4.433 ◽

1921 ◽

Vol 33 (4) ◽

pp. 433-439 ◽

Cited By ~ 1

Author(s):

Waro Nakahara ◽

James B. Murphy

Keyword(s):

The State ◽

X Rays ◽

X Ray ◽

Small Doses ◽

Ray Effects ◽

Lymphoid Proliferation ◽

Marked Suppression

Mice treated with small doses of x-rays and inoculated with cancer immediately afterwards, show a marked suppression of lymphoid proliferation. If, however, the cancer inoculation is made 7 days after the exposure to x-rays, thus permitting the primary lymphoid stimulation known to occur soon after the x-ray treatment to arise, a second stimulation takes place in a large proportion of mice thus inoculated. Changes in the blood of mice x-rayed and inoculated with cancer 7 days afterwards show that the state of resistance to cancer inoculation is attended by blood lymphocytosis, as is the case in all other varieties of immunity to transplanted cancer so far studied.

Download Full-text