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|English to Italian translations [PRO]|
Science - Chemistry; Chem Sci/Eng / chemistry
|English term or phrase: zero-background quartz|
|x-ray powder diffraction:|
Sample tapped out of vial and pressed onto zero-background quartz in Al holder.
L'idea è che il quarzo non deve contribuire con intensità diffratta o diffusa.
Nel testo da te riportato manca o si sottintende un termine, "plate" o "slides", ovvero l'oggetto in quarzo contenuto nel portacampioni.
Propongo come traduzione "quarzo con sfondo zero".
X-ray Diffraction Experiments
Attempts at obtaining an x-ray diffraction (XRD) pattern from the samples using our Philips diffractometer were unsuccessful. Detection of any reflections at all from such small samples (without grinding to a powder) requires special instrumentation and conditions. Therefore, the samples were taken to an X-ray facility equiped with a state-of-the-art Siemens D-5000 diffractometer. The samples were mounted on "Zero-background" quartz slides, and scanned from 5 to 90 degrees 2 theta at an extremely slow speed over a period of 10 hours using Cu K-alpha radiation. Both samples T1,2-A and -B were mounted side-by-side to maximize sample area. Sample T3-A was mounted and scanned alone. As seen from the print-out of the raw data in Figure 5, the two samples are not much different with respect to detected crystalline phases.
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