Max-Flux Optics

Collimating or Focusing Graded Multilayer Monochromator

Maximizes intensity:

  • through a channel-cut monochromator
  • collimated or focused beam depending on application requirements
  • on the sample within the total external reflection angle for TXRF

The Max-Flux brand of focusing and collimating optics are specifically designed to collect large solid angles from any X-ray source rendering the X-ray beam monochromatic. Rigaku offers a broad range of optics for your diffractometer, regardless of manufacturer or model.

Graded multilayer monochromators provide increased intensity for high-resolution diffraction, thin film analysis and other 1-dimensional parallel beam XRD applications.

Introduced by Rigaku Innovative Technologies in the early 1990s, graded multilayer monochromators provide increased intensity and decreased background.

Max-Flux Optics Overview

Max-Flux optics use graded multilayers, assuring the same X-ray energy diffracts from every point along the surface of the parabolic or elliptical optic. Rigaku’s Osmic coating technology provides results in less than 0.5% d-spacing variation. Such high precision means more flux is available for your experiment.

Max-Flux hardware and housing options

Easy alignment, higher brilliance and improved data quality make the Max-Flux brand of optics the first choice for high-resolution X-ray diffraction, thin film analysis, reflectometry, powder diffraction, texture analysis, stress/strain measurements, total reflection X-ray fluorescence (TXRF) spectroscopy and more.

Max-Flux housing features include:

  • Four degrees of freedom: Bragg angle elevation adjustment, tilt adjustment and focal length adjustment
  • Direct and reflected beam are easily separated by adjustable slits

Monochromatize while simultaneously achieving one of the following:

  • Focus a beam from a line source to a thin line—a significant increase in monochromatic flux density at the focus
  • Collimate a beam from a line source to illuminate a specific area
  • Focus a parallel beam—a significant increase in monochromatic flux density at the focus

RIT - Max-Flux (graphic08)

A parallel beam creates symmetrical peak shapes, accurate 2Ө values and removes specimen displacement errors for when used in a diffractometer.


RIT - Max-Flux (graphic09)

When cross-coupled, two parabolic cylinders will create a parallel beam in two dimensions from a point-focus source or a 2-dimensionally focused spot from a parallel beam

Optical precision is also critical to good performance. Using proprietary technology, standard Max-Flux optics are made within ~10 arcsec of the ideal curve. When the best performance is required, Rigaku applies new Arc)Sec technology to achieve optical precision of ≤ 4 arcsec! As a 1-dimensional optic, divergence in the axial plane can be controlled through use of a Soller collimator.

Contact Rigaku for a suitable optic for your application. Rigaku provides excellent housings for aligning Max-Flux optics on your instrument. Housing are available for operation in atmosphere or vacuum, for 40 mm, 60 mm, 80 mm, 100 mm, 120 mm, and 150 mm long optics.

Max-Flux Optics Features

Easy alignment
Increased intensity on the sample, especially when using a channel cut monochromator
Greatly decreased background, Kβ and other spurious lines from the X-ray source
Symmetric and homogeneous beams
Excellent control of X-ray beam profile and divergence
Improved data collection
Available for Cu Kα, Cu Kβ, Mo Kα, W Kα, W Kβ, W Lα, W Mα, Ag Kα, Ag Kβ, Au, Cr, Ga, Co and other X-ray energies
Optical housings 40 mm, 60 mm, 80 mm, 100 mm and 120 mm in length for proper alignment and maximum intensity

Max-Flux Optics Specifications

Technique For X-ray diffraction, high-resolution diffraction, thin film analysis and TXRF spectrometry
Benefit Increased intensity on the sample, symmetric and homogeneous beams
Technology High-precision graded multilayer optics
Attributes Excellent Kα/Kβ ratio
Options Various wavelengths and optic sizes available

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