Monochromator Johansson

Figure 2.13. Diagram showing how a Johansson curved crystal monochromator works...

Figure 8.43 Rowland circle type monochromator schematic with a Johansson curved crystal used as a scanning channel. ( 2013 Bruker, Inc. www.bruker.com. Used with permission.)...

X-ray diffraction experiments were performed in a Guinier camera with a Johansson monochromator using Cu K, radiation (2. = 1.5406). 

The powder X ray diffraction patterns were scanned in transmission technique with a GO-2000 diffractometer (Ital Structures, Riva del Garda, Italy) operating in the Seemann-Bohlin geometry and equipped with a quartz-curved crystal monochromator of the Johansson type aligned on the primary beam. The Cu-K i radiation (X 1.5406 A) was employed, and an instrumental 26 step of 0.1° every 10 s was selected. 

XRD investigations of the composites were performed using a D8-Advance from Bruker AXS, equipped with a Ge (111)—Johansson monochromator. The data were collected in the 20 range from 10° to 80°, with a step width of 0.01°. 

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