This is my contribution to Xrf analysis.Most the elements were bought via ebay.This is actually outdated now.I am now using Thermimo 6.8 with resolution compensation with improve resolution.My techniques are changing.I no longer use paper nor lead collimator.Just an iron cylinder with leaded edge now.Will post my latest version once completed.Livio has been kind enough to incorporate some changes I suggested to him,
Taray
xrf Analysis
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Taray
- Posts: 35
- Joined: 20 Dec 2015, 13:42
xrf Analysis
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lodovico
- Posts: 64
- Joined: 10 May 2015, 23:08
Re: xrf Analysis
Well done ! I did something similar (I scanned the periodic table ..). In the attached files maybe you can find some inspiration.
It would be good to exchange opinions on XRF matters (you can write me at physicsopenlab@gmail.com).
We both used a scintillation detector but the best would be a silicon detector such as SDD or something like that.
Lodovico
It would be good to exchange opinions on XRF matters (you can write me at physicsopenlab@gmail.com).
We both used a scintillation detector but the best would be a silicon detector such as SDD or something like that.
Lodovico
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Taray
- Posts: 35
- Joined: 20 Dec 2015, 13:42
Re: xrf Analysis
Lodovico,
Your work is very detailed indeed.I am impressed.
Here are some pics from my new setup.Sorry my table is a bit messy.
GS2002 pro drivers
Asus Xonar soundcard using 192 kHz/24 bit.A gaming card which works well.
Battery pack to charge GS2002 drivers.No issues with ground loops here.But battery pack has to be plugged in to wall socket ..otherwise current fluctuates and readings change.
As you see I am not using the PMT adaptor.PMT is well suited for Thermimo but there are alternatives.
My xrf file (file section) above is using a soundblaster soundcard capable of 44 kHz only.
Compared to 192kHz soundcard I don't see much improvement in resolution if any.Faster readings at 192 kHz though.
After using together with resolution compensation mode the FWHM is much reduced.
Iron pipe to house my Rap47 with 10 Am smoke detector sources on a steel ring resting on matted lead sheets with a small window.This is more portable than the lead collimator and works better.
The sample ,Am sources and detector are more aligned.
Yes I will contact you to share some ideas .
Thanks
Taray
Your work is very detailed indeed.I am impressed.
Here are some pics from my new setup.Sorry my table is a bit messy.
GS2002 pro drivers
Asus Xonar soundcard using 192 kHz/24 bit.A gaming card which works well.
Battery pack to charge GS2002 drivers.No issues with ground loops here.But battery pack has to be plugged in to wall socket ..otherwise current fluctuates and readings change.
As you see I am not using the PMT adaptor.PMT is well suited for Thermimo but there are alternatives.
My xrf file (file section) above is using a soundblaster soundcard capable of 44 kHz only.
Compared to 192kHz soundcard I don't see much improvement in resolution if any.Faster readings at 192 kHz though.
After using together with resolution compensation mode the FWHM is much reduced.
Iron pipe to house my Rap47 with 10 Am smoke detector sources on a steel ring resting on matted lead sheets with a small window.This is more portable than the lead collimator and works better.
The sample ,Am sources and detector are more aligned.
Yes I will contact you to share some ideas .
Thanks
Taray
You do not have the required permissions to view the files attached to this post.
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Taray
- Posts: 35
- Joined: 20 Dec 2015, 13:42
Re: xrf Analysis
Lodovico,
I like to do heavy metal K line spectra too.Unfortunately I do not have Na22.Can I use alternatives like Cs137?
Thanks
Taray
I like to do heavy metal K line spectra too.Unfortunately I do not have Na22.Can I use alternatives like Cs137?
Thanks
Taray
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lodovico
- Posts: 64
- Joined: 10 May 2015, 23:08
Re: xrf Analysis
Hi,
yes I think so. For example you have it as collateral effect (for the lead) in the lead castle for gamma spectrometry so you can use Cs137.
I used Na22 only because I had that source quite strong.
Lodovico
yes I think so. For example you have it as collateral effect (for the lead) in the lead castle for gamma spectrometry so you can use Cs137.
I used Na22 only because I had that source quite strong.
Lodovico
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Taray
- Posts: 35
- Joined: 20 Dec 2015, 13:42
Re: xrf Analysis
Lodovico,
I will give it a shot with Cs137 and will post my results once ready.
Thanks.
Taray
I will give it a shot with Cs137 and will post my results once ready.
Thanks.
Taray
