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Okay -- because I want you all to have the satisfaction of getting
these done, there are a few more things that you can do that will
make your plots look good.<br>
<br>
1. I calculated my <img style="vertical-align: middle"
src="cid:part1.05020308.04080809@mercer.edu" alt="$D_e$"> in cm-1
so that it would be in a similar unit system as everything else. I
could have also used ergs, but the cm-1 will be a much smaller
number and easier for excel to calculate. Based on what I have
seen, getting to <img style="vertical-align: middle"
src="cid:part1.05020308.04080809@mercer.edu" alt="$D_e$"> in
joules or ergs is not a problem. To get it to cm-1 or m-1<br>
just divide by <img style="vertical-align: middle"
src="cid:part3.07080703.05090309@mercer.edu" alt="$hc$"> in the
appropriate units.<br>
<br>
2. The argument of the exponential function in the Morse potential
needs to be dimensionless, so the <img style="vertical-align:
middle" src="cid:part4.01060207.08010704@mercer.edu"
alt="$\alpha$"> term needs to be in dimensions of cm-1 or m-1. I
you divide your calculated <img style="vertical-align: middle"
src="cid:part4.01060207.08010704@mercer.edu" alt="$\alpha$"> by <img
style="vertical-align: middle"
src="cid:part3.07080703.05090309@mercer.edu" alt="$hc$"> (in the
appropriate units) it will get you there.<br>
<br>
3. If I multiply by <img style="vertical-align: middle"
src="cid:part1.05020308.04080809@mercer.edu" alt="$D_e$"> in
wavenumbers then the plot E(R) will be in terms of wavenumbers. To
get this back into eV multiply by <img style="vertical-align:
middle" src="cid:part3.07080703.05090309@mercer.edu" alt="$hc$">
and divide by the energy required to move a coulomb of charge
through a potential of 1 volt (1.6e-19 J/C or 1.6e-12 erg/c).<br>
<br>
I was able to get nice looking plots using these methods.<br>
<br>
I will be in Willet after 1 pm tomorrow. Gen Chem lab starts at
3:00 pm. Once I get my gen chem students checked out of lab I
will head back down to my office.<br>
<br>
<pre class="moz-signature" cols="72">--
Andrew J. Pounds, Ph.D. (<a class="moz-txt-link-abbreviated" href="mailto:pounds_aj@mercer.edu">pounds_aj@mercer.edu</a>)
Professor of Chemistry and Computer Science
Mercer University, Macon, GA 31207 (478) 301-5627
<a class="moz-txt-link-freetext" href="http://faculty.mercer.edu/pounds_aj">http://faculty.mercer.edu/pounds_aj</a>
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