Thermo Scientific GOLDD Technology
Thermo Scientific GOLDD technology, available with handheld Niton® XL3t Series and Niton XL2 Series x-ray fluorescence (XRF) analyzers and the Niton FXL Series XRF field x-ray lab, joins advanced, proprietary electronics with the most versatile x-ray tubes and one of the largest area silicon drift detectors commercially available to take your analytical capabilities to a whole new level. GOLDD™ technology, which stands for Geometrically Optimized Large Drift Detector, delivers faster measurement times and lower detection limits - up to 10-times faster than conventional Si-PIN detectors and up to 3-times more precise than conventional smaller silicon drift detectors (SDD).
GOLDD Technology: The most versatile XRF analyzer on the market
This performance gain is a function of several factors, including Geometric Advantage, Optimized Excitation, and a Large Drift Detector. Fundamentally, silicon drift detectors have the capacity to process more counting events than Si-PIN detectors traditionally used in handheld and field-mobile XRF analyzers. Unless the instrument has been engineered to take advantage of these counting events, it squanders the opportunity to provide dramatically improved analytical performance.
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- Excitation intensity is exponentially proportional to the excitation voltage. Increasing the excitation voltage by 25% has a much greater effect than increasing the tube current by a similar amount
- For the same size detector, the closer it is to the sample, the more fluorescent x-rays it will detect
- The Niton FXL, Niton XL3t, and the Niton XL2 were designed with this optimized geometry
- To take advantage of a detector with a higher count rate, more fluorescent x-rays must be produced by the sample
- This is achieved using a higher voltage x-ray tube:
- Niton FXL and Niton XL3t - 50 kV; Niton XL2 - 45 kV
- Typical other technology - 40 kV
- Excitation intensity is proportional to a high power of the excitation voltage. Increasing the excitation voltage by 25% has a much greater effect than increasing the tube current by a similar amount
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- A large detector will collect more fluorescent x-rays than a small detector
- The Niton FXL, Niton XL3t, and Niton XL2 employ some of the largest area drift detectors that are commercially available in a portable XRF analyzer
- With a larger silicon drift detector, these Thermo Scientific portable XRF analyzers collect up to 2.5x more signal
- This all adds up to the GOLDD Advantage
- Up to 10x better performance than conventional Si-PIN detectors
- Up to 3x better performance than off-the-shelf SDD detectors
Further, using Thermo Scientific GOLDD technology, the Niton XL3t and Niton XL2 analyzers can now effectively measure elements as low as Mg without the use of helium purging or vacuum pumps. Its large surface area, combined with its ability to process over 180,000 detector events per second provide analytical performance that suits the demands of most applications including enhanced sorting of aluminum, titanium and bronze alloys, as well as superior performance for tramp and trace element analysis. Additionally, for those in mining and mineral exploration, the Niton XL2 GOLDD is ideal for grade control, concentrator operations, and near-mine exploration, while the Niton XL3t GOLDD+ has the best pathfinder detection limits (Hg, As, Sb, etc.) for gold and platinum group elements (PGE). The Niton FXL field x-ray lab is a boon to the energy and industrial minerals markets, particularly in areas such as light element and trace metal analysis for gas shale and mud logging applications and the analysis of raw materials for cement making. Additionally, GOLDD technology is the clear choice for the identification and remediation of environmental hazards in residential, commercial, and industrial settings, such as toxic drywall or contaminated soils and sediments.
Learn more about our key applications, including:
Metal and Alloy Analysis
Mining and Exploration
Contact us for a demonstration today, and see for yourself why Thermo Scientific GOLDD technology available on our handheld Niton XL3t Series and Niton XL2 Series XRF analyzers and our Niton FXL Series field x-ray lab is right for you.
Note: The Niton XL3t GOLDD has been replaced by the enhanced Niton XL3t GOLDD+.