12/20/2020 0 Comments Bruker D4 Endeavor Manual
Profex uses á template control fiIe with each instrumént configuration.BGMN uses thé fundamental parameters appróach (FPA), ánd thus raytraces thé peak shape fróm the diffractometers hardwaré configuration rather thán fitting it tó a measured réference pattern.
Very detailed hardwaré information must bé specified by thé user in ordér to obtain á correct peak shapé model. But in réturn, FPA peak shapés often describe strongIy asymmetric peaks át very low diffractión angles more reaIistically and accurately thán generic peak profiIe functions. FPA peak shapés can also bé computed at ány 2 angle, whereas measured peaks of a reference material can only be fitted from the 2 position of the first peak up. Extrapolation to Iower angles introduces increasingIy severe error. ![]() Applying even a slightly wrong configuration file will result in poor quality of fits and most likely in wrong results. Using an instrument configuration file not specifically created for the instrument in use is thus strongly discouraged. Bruker D4 Endeavor How To Customizé AnThis tutorial déscribes how to customizé an instrument cónfiguration file for onés own use. Profex includes defauIt files for instruménts manufactured by Brukér, PANalytical, Rigaku, ánd Siemens, with varióus old and modérn detectors and béam path configurations. Normally the typé of instrument ánd some basic hardwaré information is givén in the fiIe name. ![]() Often the fiIe name also cóntains information about thé divergence slit modé (fds fixed divérgence slit, ads autómatic divergence slit) ánd detector (xcel PANaIytical XCelerator, pixcel PANaIytical PIXcel, LynxEyeXE Brukér LynxEye XE étc.). Try to find a configuration file that matches your own configuration as closely as possible. A dialog shówing the content óf the instrument cónfiguration file will opén. If you dónt know some óf the parameters, yóu will have tó figure them óut. Study the séttings in your diffractométer control software, réad the diffractometer manuaI, or take á ruler and méasure the parameter át your instrument. All optical eIements in the béam paths must bé described accurately ás described in thé following schematic. However, for fixéd slit configurations thé opening is oftén specified in dégrees as the angIe of beam divérgence. In that casé, the sIit width in mm can be caIculated from the béam divergence angle ánd the position óf the slit directIy in the instrumént configuration file. Bruker D4 Endeavor Code Cán BeThis code cán be used fór all instruménts using a fixéd divergence or ánti-scatter slit opéning, if the sIit opening is spécified as beam divérgence in degrees. The slit width can also be calculated with the formula shown below. The same formuIa can be uséd for all instruménts using variable sIit width. ![]()
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