Bent Crystal Laue Analyser | FMB Oxford

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Bent Crystal Laue Analyser

Bent Crystal Laue Analyser

The FMB Oxford BCLA is a versatile, narrow bandpass filter that can enable you to achieve the ultimate performance in a variety of applications, including XRF and XAFS experiments at a synchrotron beamline.
The system, which is compatible with a variety of back-end detectors, rejects undesired x-ray photons (e.g. scattering and fluorescence from other elements in the sample) before they can be detected; drastically improving signal to noise ratio.

The core of the BCLA is a silicon crystal, which is bent into a logarithmic spiral such that X-rays of a selected wavelength are diffracted towards the detector; whilst background radiation is blocked by Soller slits. The slit material, crystal shape, and geometry of the BCLA are carefully optimised for a particular working energy range.

Integration simplicity

Compatible with numerous detectors: scintillation tubes, ion chambers, and sold state arrays
Beam requirements easily achievable from modern synchrotron beamlines and many laboratory sources

Ease of use

Rapid alignment using a generic x-y stage

Ultimate performance

Very narrow bandpass
Large angular acceptance

BCLA Specifications

Input beam size~100μm in diffracting plane (generally vertical direction)
~1mm in perpendicular direction
Bandpass10 – 100eV
Input energy ranges5.3, 6.4, 7.5, 8.4, 9.5, 11.4, 13.6, 16, 18.4, 22 KeV

Ordering Info

EnergyFluorescence linesPart No.
5.3keVKα: V, Cr, Mn
Lα: Ce, Pr, Nd, Pm, Sm, Eu
BCLA0053 (check availability)
6.4keVKα: Mn, Fe, Co
Lα: Pm, Sm, Eu, Gd, Tb, Dy, Ho
BCLA0064 (check availability)
7.5keVKα: Co, Ni, Cu
Lα: Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W
BCLA0075 (check availability)
8.4keVKα: Cu, Zn, Ga
Lα: Ta, W, Re, Os, Ir, Pt
9.5keVKα: Zn, Ga, Ge, As
Lα: Os, Ir, Pt, Au, Hg, Tl
11.4keVKα: As, Se, Br, Kr
Lα: Pb, Bi, Po, At, Rn, Fr, Ra
13.6keVKα: Kr, Rb, Sr, Y
Lα: Th, Pa, U, Np, Pu, Am
16.0keVKα: Y, Zr, Nb, Mo
Lα: Am
18.4keVKα: Nb, Mo, Tc, Ru, Rh
Lα: N/A
22.0keVKα: Rh, Pd, Ag, Cd, In
Lα: N/A
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