<P>
Dear Dr.Prasenjit,<BR>
Thank you so very much for your detailed reply and advice.Using your advice I performed the convergence tests and I think it has worked. I will use the converged values and check for further calculations and let you know about the results.Thank you once again as this has helped me to proceed in my work<BR>
Regards<BR>
</P>
SATHYA SHEELA.S
<br>
Grad. Student
<br>
Department of Physics
<br>
National Institute of Technology
<br>
Tiruchirapalli - 620015
<br>
India<br><br>
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