Sunday, November 1, 2020

Hamamatsu to release lead-free ALD-MCP Product in Spring 2021

Hamamatsu Photonics has developed a high performance MCP with low noise and high gain that contains no hazardous substances listed in the RoHS directive. Sample products will be available from October 1st, 2020.

By reviewing all materials starting from scratch and applying an ALD* (atomic layer deposition) technique, we succeeded in creating ALD-MCPs (microchannel plates) that ensure low noise and high signal multiplication (gain) without using materials containing lead. Eliminating lead is great step forward because its use is restricted in the RoHS directive issued by the European Union (EU) as a hazardous substance. The ALD-MCP is likely to replace currently used MCPs that contain lead and will serve as a high performance MCP useful for mass spectrometers and scanning electron microscopes (SEM). We will start supplying samples of ALD-MCP for evaluation from October 1st (Thu), 2020 aiming to sell them as commercial products next spring. 

The MCP is an electron multiplier for two-dimensionally detecting and multiplying input signals such as ions, and is used in mass spectrometers and SEM. Basically it is a thin plate or disc having a great many fine glass capillaries or channels with an inner diameter of about 10 micrometers (micrometer is one-millionth of a meter). The inner wall of each channel is processed to convert input signals into electrons and multiply them. The voltage applied across an MCP creates an electric field in each channel to accelerate the electrons so that they strike the inner wall of the channel several times while being multiplied by secondary emission, and the multiplied electrons are then output as a large signal.

More information (Hamamatsu) : LINK 


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