X-ray fluorescence

Instrument details:
Type: X-ray fluorescence analytical microscope
Make: HORIBA, Ltd.
Model No: XGT-9000
Essential specification:
Sample Type: Solids
Two-dimension resolution: 10 µm,100µm
Detectors : X-ray Fluorescence detector (LN2 Free detector (SDD))
X-ray fluorescence detector : Silicon drift detector (SDD)
Transmission detector: NaI(Tl)
Detectable elements: Na (11) ~ U (92)
Measurement range: Size range = 0.3 nm – 5 µm (diameter)
Maximum mass of sample: 1 kg
Temperature: 10°C to 30°C
Sample illumination/observation: Top, Bottom, Side illuminations/Bright and Dark fields
Storage temperature: 0°C to 50°C
Scanning range: Max.100 mm X 100mm; Min. 256µm X 256µm
Software: XRF-XGT9000
Principle: Energy dispersive X-ray fluorescence
Minimum sample volume:
Accuracy: Both visible foreign objects and invisible ones down to only several microns (= 1/1,000 millimeter) in size.
Precision / Repeatability:
The XGT-9000 supports visual confirmation, detection, and analysis of even hard-to-detect foreign materials in Films and Analysis of Hydrous Samples while verifying optical observation images with high resolution.
Working principle:
X-Ray Analytical Microscope (XGT-9000) converges X-rays generated in the X-ray tube into a very thin X-ray beam and irradiates it to the sample and detects fluorescent X-rays which have energy peculiar to elements contained in the micro-fine region of the sample by means of X-ray Fluorescence detector (LN2 Free detector (SDD)) . The XGT-9000 performs non-destructive foreign-object analysis on samples, switching between high-speed analysis mode for rapid screening of foreign objects, and detailed analysis mode using the micro beams first incorporated in earlier models.

Moreover, this technique can provide both qualitative and quantitative bulk composition of solid and liquid samples. The system is also equipped with several energy filters, to enhance the excitation of X-rays in specific areas of the spectrum, and therefore, to identify elements at detection limits. The instrument can be run in full or partial vacuum. The advantage of the full vacuum is the possibility to detect light elements, down to Na. However, when working in partial vacuum it is possible to analyse liquids, biological samples or hydrated ones without any damage, as they are kept at atmospheric pressure