Radiation Injury in Man: Its Chemical and Biological Basis, Pathogenesis and TherapyRadiation Injury in Man: Its Chemical and Biological Basis, Pathogenesis and Therapy. By CronkiteEugene P. M.D., Head, Division of Experimental Pathology, Medical Research Center, Brookhaven National Laboratory, Upton, N. Y.; formerly Head, Hematology, Naval Medical Research Institute, Bethesda, Md.; Director of Biomedical Research Atomic Bomb Tests 1953 and Care of Accidental Human Radiation Casualties from Fallout 1954; Member, Committee on Pathologic Effects of Atomic Radiation and Advisory Committee for Civil Defense of the National Academy of Sciences, and BondVictor P., M.D., Ph.D., Head, Division of Microbiology, Medical Research Center, Brookhaven National Laboratory, Upton, N. Y.; Formerly Head of Experimental Pathology Branch, United States Naval Radiological Defense Laboratory, San Francisco, Calif.; Member, National Advisory Committee on Radiation and Subcommittees of the National Committee on Radiation Protection, and the International Commission on Radiological Units. Publication No. 382, American Lecture Series. A volume of 200pages, with 18 figures. Published by Charles C Thomas, Springfield, Ill., 1960. Price $6.50.

Radiology ◽  
1961 ◽  
Vol 76 (1) ◽  
pp. 132-133
Author(s):  
H. Ade ◽  
B. Hsiao ◽  
G. Mitchell ◽  
E. Rightor ◽  
A. P. Smith ◽  
...  

We have used the Scanning Transmission X-ray Microscope at beamline X1A (X1-STXM) at Brookhaven National Laboratory (BNL) to acquire high resolution, chemical and orientation sensitive images of polymeric samples as well as point spectra from 0.1 μm areas. This sensitivity is achieved by exploiting the X-ray Absorption Near Edge Structure (XANES) of the carbon K edge. One of the most illustrative example of the chemical sensitivity achievable is provided by images of a polycarbonate/pol(ethylene terephthalate) (70/30 PC/PET) blend. Contrast reversal at high overall contrast is observed between images acquired at 285.36 and 285.69 eV (Fig. 1). Contrast in these images is achieved by exploring subtle differences between resonances associated with the π bonds (sp hybridization) of the aromatic groups of each polymer. PET has a split peak associated with these aromatic groups, due to the proximity of its carbonyl groups to its aromatic rings, whereas PC has only a single peak.


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