Patent ID: 11927616
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Environmental technology (Chemistry)
Classification: CPC G | IPC G

Claim 0:
1. A method for measuring alpha particle emissions, said method comprising:
obtaining a wafer emission rate, wherein said wafer emission rate is measured with a counter;
covering said wafer with a metal mesh grounded to a cathode of said counter wherein said metal mesh is grounded to said cathode outboard of said wafer;
obtaining a mesh and wafer emission rate, wherein said mesh and wafer emission rate is measured with said counter;
replacing said wafer with a wafer carcass;
obtaining a wafer carcass and mesh emission rate, wherein said wafer carcass and mesh emission rate is measured with said counter;
calculating a wafer carcass emission rate based on said wafer emission rate, said mesh and wafer emission rate, and said wafer carcass and mesh emission rate; and
computing a controlled collapse chip connection emission rate.