Operating Procedures and Instrumental Requirements

There are two basic methods for working in HREM imaging [3]  

The high resolution electron lattice imaging (HRELI) requires exploration in the thinnest specimen areas at magnifications x 250 000 or higher. 

The steps for operation are, after search and tilt of the adequate orientation and alignment of the beam  

2) Set the condenser for optimum balance of brightness check for coherence and image stability. 

3) Preliminary focusing of upper surface of specimen and set of magnification. 

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