Thank you, Bruce and Alexey for your kind information.

Bruce the communication, unfortunately, is not available on our Internet connection from university to download for free. Do you think it would be possible (under the copyrights act off course) for you send a PDF copy? The communication seems really interesting and I will keep the procedure in mind (for March Dates when we have BL for us again) to make sure that we have a calibration curve. (off course XRF is more reliable and easy).

Alexey, I read the section (also some other information in that book). The book is really great. Thanks for sharing.

I have already sat down with the pen and paper. but just want to know one thing. Is Edge Jump = Absorbance?? or we need to calculate the absorbance by actually practically finding out the I and Io?

e.g. if edge jump = absorbance I can modify the equation I = Io^e-upd into its A form. If not I will use ion chamber gas ratio to calculate the I and Io respectively.

Which way is more correct?

Best Regards

Pushkar

On Tue, Feb 21, 2017 at 10:15 PM, Bruce Ravel <bravel@bnl.gov> wrote:

This might help: https://doi.org/10.1107/S1600577514001283

Note that we measured a sequence of standards of known thickness and concentration /prior/ to the rest of the experiment, so the methodology in that paper might not be useful after the fact in the absence of that prep work.

B

On 02/20/2017 10:19 PM, pushkar shejwalkar wrote:

Dear All,
First of all, is it possible to calculate the concentration of metal
(loading, therefore) from just the edge jump? Is there a simpler
equation like knowing the Flux values or some basic instrumental
information we can calculate the concentration term using Io and It
values of beamline (the simplest form of Beer-lambert law)? if so what
formula should we use.
I searched in the mailing list archive and have found one such archive
but it discusses how to use calculation to find out how much sample
would be needed to get the edge jump. I am rather interested in the
reverse way. I have an experimental edge jump and want to calculate (if
possible with as much accuracy as possible) the concentration of metal.
I know with only edge jump it will be difficult and XRF will be a better
and more reliable way. But for better understanding and cross checking
between different samples, I wish to do such calculations.
Can anyone guide me to the right direction and equations to do such
calculations?
Thank you all in advance
Warmest regards
Pushkar

--
Best Regards,
Pushkar Shejwalkar.
Post-doctoral -Researcher,
Tokyo Engineering University,
Tokyo-to
Japan

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--
Bruce Ravel ------------------------------------ bravel@bnl.gov

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Best Regards,
Pushkar Shejwalkar.
Post-doctoral -Researcher,

Tokyo Engineering University,

Tokyo-to

Japan