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To: Paul Engel who wrote (83763)	6/18/1999 1:45:00 AM
From: maroon	Read Replies (1) \| Respond to of 186894

How do you count electrons ????

To: Paul Engel who wrote (83763)	6/18/1999 3:15:00 AM
From: Amy J	Read Replies (2) \| Respond to of 186894

Wow, thanks for the explanation. One more question... RE:"these soft-error upsets ONLY occur when the number of hole-electron pairs are created in a region where charge is stored in the substrate - such as in depletion region of a DRAM cell. However, as operating voltages drop, dynamic switching of nodes (diffusions) in a logic structure such as a microprocessor may become susceptible to corruption by charge collection from electron-hole pairs created by an alpha particles in the bulk silicon near the node INSTEAD OF the proper electrical switching of that node from a normal logic operation. Silicon-on-Insulator structures may result in substrates that are nearly immune to this problem." Do Silicon-on-Insulator structures exist today? If not, how frequent does a corruption occur from charge collection from electron-hole pairs? Thanks! Amy J