Dear Users

I am applying the convergence test  for NaCl crystal.For that I took mesh cut 
off energy from 30 Ryd onwards.I found that after 70 Ryd total energy was 
constant upto 110 Ryd. on increasing the mesh cut off further the total energy 
became constant. I would like to know what value of mesh cut off should be 
selected.

 Thanks
Mamta

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