When measuring elements like Be, B, C, N, O, and F using X-ray fluorescence spectroscopy, the characteristic X-ray energies of these elements are extremely low, ranging from 108eV to 667eV. These are considered very soft X-rays and are easily absorbed by materials. To ensure these characteristic X-rays have a high transmission rate and improve the quantum efficiency of the detector, an ultra-thin conductive window film is required to cover the surface of the detector.
Pumo Spectrum provides ultra-thin organic window films with a thickness of less than 0.6um, which can efficiently transmit ultra-soft X-rays. The ultra-thin organic window film is coated with a 20nm thick aluminum film to provide conductivity, used for building the electric field of a gas-flow proportional detector.
As an innovative solution, the company also offers graphene film with a thickness of 140nm. This graphene film is inherently conductive and doesn't require additional aluminum coating, making it a direct replacement for traditional organic films with aluminum.
Traditional radiation detectors, such as Silicon Drift Detectors (SDD), Proportional Counters (PC), and Scintillation Counters (SC), often use Beryllium as a protective window. However, Beryllium has a limited output, is complex to process, carries a certain level of toxicity, and has significant price fluctuations.
Pumo Spectrum 's graphene windows (with thickness ranging from 140nm to 10,000nm) have excellent mechanical properties and stability, along with a high transmission rate for soft X-rays. They are consistently available and can serve as a replacement for traditional Beryllium windows.
