Re: [PyMca] SIMULATION OF SCATTER PEAKS

[PyMca g. p. m. list. <pym...@li...>]

Dear Amando,


Many thanks for the responses.

Kind regards

Edward Sichangi

On Thu, Jun 26, 2025 at 8:38 PM PyMca general purpose mailing list. <
pym...@li...> wrote:

> Dear Edward,
>
> That can have multiple explanations (bad description of the experiment,
> sample, geometry...) but none of them has anything to do with PyMca itself.
> Best regards,
>
> Armando
>
> On 26/06/2025 17:14, PyMca general purpose mailing list. wrote:
>
> Dear Armando,
>
> Thank you for the responses.
> I have included the multiple energies as you advised and both the K alpha
> and K beta peaks for Compton and Rayleigh scattering  have appeared.
> However, just as the earlier case, the simulated peaks are more intense
> than the experimental counterparts.
>
> Kindly see the attached spectra.
>
> Kind regards
>
> Edward Sichangi
>
> On Wed, Jun 25, 2025 at 8:13 PM PyMca general purpose mailing list. <
> pym...@li...> wrote:
>
>> But have you filled all the energies emitted by your tube??? Run your
>> simulation with something similar to the table below.
>>
>> DISCLAIMER: I do not know if your tube has anything to select a single
>> energy nor if the ratios below apply to the emission of your tube. In the
>> configuration you sent us you are using a monochromatic beam. Without
>> optical elements, you must have multiple energies coming out of your X-ray
>> tube and not a single one.
>>
>> On 25/06/2025 18:08, PyMca general purpose mailing list. wrote:
>>
>> Dear members,
>>
>> Many thanks for the responses Armando. I have double clicked the second
>> energy table but the results are still the same.
>>
>> As you can see from the scatter peaks, why is the simulated one more
>> intense than the experimental counterpart.
>>
>> REGARDS
>>
>> On Wed, Jun 25, 2025 at 6:34 PM PyMca general purpose mailing list. <
>> pym...@li...> wrote:
>>
>>> Dear Armando,
>>>
>>> Attached kindly find the original spectrum and cfg file I used.
>>>
>>> Thank you in advance.
>>>
>>> On Wed, Jun 25, 2025 at 6:09 PM PyMca general purpose mailing list. <
>>> pym...@li...> wrote:
>>>
>>>> Dear Edward,
>>>> My first impression is that you are considering Mo-Ka as exctation beam
>>>> and that you have forgotten about Mo-Kb.  (double click on the second
>>>> energy of the energy table to turn-it pink)
>>>>
>>>>
>>>> Without the original spectrum and the original cfg file it is difficult
>>>> to say more.
>>>>
>>>> Armando
>>>>
>>>> On 25/06/2025 16:50, PyMca general purpose mailing list. wrote:
>>>>
>>>> Dear Armando,
>>>>
>>>> Many thanks for the prompt response.
>>>>
>>>> The excitation energy is 17.5 keV (X-ray tube)
>>>>
>>>> On Wed, Jun 25, 2025 at 5:20 PM PyMca general purpose mailing list. <
>>>> pym...@li...> wrote:
>>>>
>>>>> Dear Edward,
>>>>>
>>>>> Can you provide details about your excitation source?
>>>>>
>>>>> Armando
>>>>>
>>>>> On 25/06/2025 12:41, PyMca general purpose mailing list. wrote:
>>>>> > Dear members,
>>>>> >
>>>>> > I have attempted to simulate experimental spectrum using XMI-MSIM
>>>>> > pymca software but the simulated scatter peaks are not matching with
>>>>> > their experimental counterparts. I would like to know why and how to
>>>>> > correct it.
>>>>> >
>>>>> > See the attached spectra.
>>>>> >
>>>>> > Thank you in advance.
>>>>> >
>>>>> > Edward Sichangi
>>>>> >
>>>>> >
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