Main features
- Resolution over 6000 and high-quality EXAFS up to k=15.
- The integrated X-ray absorption spectroscopy (XAS) system features both transmission and fluorescence modes.
- Allows routine XAS analysis for concentrations less than 1 wt.%.
- Wide energy range from 4.5 to 25 keV including transition metals such as Titanium, Platinum, Actinides ...
- Photon counting detector for high-throughput measurements.
Detailed description
Technology & Principles
X-ray absorption spectroscopy (XAS) reveals important information about oxidation states, bonding environments, and local atomic structure of materials by measuring how X-rays are absorbed near the absorption edge of an element.
- Transmission mode: Measures X-rays passing directly through the sample. Ideal for bulk materials or samples with high concentrations.
- Fluorescence mode: Detects photons emitted when atoms return to their ground state after being excited by X-rays. Suitable for elements with low concentrations (< 1–5 wt%), thick samples, or samples on thick substrates.
Thanks to the patented high-intensity fluorescence source and advanced detection system, QuantumLeap provides reliable results at low concentrations down to 0.2–0.5% weight.
Wide energy range from 4.5 to 25 keV:
QuantumLeap is the only system that operates at low Bragg angles, allowing for the collection of complete EXAFS data from a single crystal—no pairing or multiple datasets required. In contrast, systems operating at high Bragg angles (55°–85°) require multiple analyzers to cover the energy range and maintain resolution. For example, at 85°, a 1° rotation of the crystal only covers 7 eV at 4.5 keV, making wide energy range scanning impractical without sacrificing resolution or using multiple crystals. This increases manual steps, slows down the data collection process, and requires time-consuming data pairing.
Photon counting detector in transmission mode:
QuantumLeap uses a new photon counting detector—replacing conventional silicon drift detectors (SDD)—to achieve superior speed and accuracy.
- Ultra-fast photon counting: Detecting each individual photon with an energy threshold to eliminate contamination.
- Outstanding performance: Achieving up to 100 million counts/second, over 500 times faster than traditional SSDs (limited to about 0.5 million counts/second).
- Ideal for high-throughput transmission XAS measurements of QuantumLeap.
- Flexible operation: The XAS fluorescence mode is supported by using conventional SDDs, ensuring versatility in various applications.
Integration/ Expansion:
QuantumLeap™ features an intuitive graphical user interface (GUI) that facilitates data collection with minimal user intervention, including the ability to set up scan sequences based on protocols for mapping individual points or multiple samples or multiple scans for operando experiments.