taray singh

Hi guys

This is??my X-ray setup

My x ray generating tube sits within a cylindrical??X-ray??collimator?

This collimator protrudes into??a cardboard box??containing my X-ray detector??and X-ray signal detecting Inspector Usb Geiger counter.

The exit of the X-ray collimator is closed by a less than 0.5 mm Al sheet?

The back is a leaded glass with lead polymer sleeves ..to prevent backscatter from the rear and of my collimator?

My X-ray generating tube is placed in such a way that the cathode is closest to the exit of X-ray beam?

Applying the anode heel effect.

I chose a low Z element Cr about 4 by 2 cm approx??for xrf and titanium orthopedic implant.

Since my tube is not an x -ray tube ,it will not tolerate continuous firing?

So I did it with intermittent shots each lasting about 1 sec

Probably a 70 kvp will be more damaging than a 30 kvp like in my setup

You notice a polymer covering for almost everything?

This is a probably antimony polymer from some old stripped medical X-ray aprons courtesy of??a hospital where I work.The X-ray glass was also surplus from my hospital .

Should be sufficient to block 30 kvp X-ray?

Using multiple layers of apron material just in case.

Pics are for my setup,transformer and an exact replica of my X-ray collimator??and a??Cr and Ti pic

Apologies for not showing the X-ray generating tube.

Taray

69A6620E-CE53-4FD4-AED9-71BDA4533C00.png

C94A9277-4ADE-4446-A8E8-B0C1CC49A5BB.jpeg

6664FA8C-D487-4486-9757-0DC87CE02285.jpeg

3F0065C1-0089-4040-BF90-2292643439DC.jpeg

AD8B84E3-FF44-41F5-8477-479A98E467F2.jpeg

93F10CD9-5468-461C-937D-3E964083D9CB.jpeg

#837

It looks good Taray, one thing to try, repeat the setup but put the sample away from the source, sort of like a mirror that the source and sensor are both looking at the same surface?

Geo

Show quoted text

----- Original Message -----
From: taray singh via Groups.Io <sukhjez@...>
To: [email protected]
Sent: Fri, 21 Feb 2020 23:02:22 -0500 (EST)
Subject: [XRF] Mini X-ray xrf

Hi guys

This is??my X-ray setup

My x ray generating tube sits within a cylindrical??X-ray??collimator?

This collimator protrudes into??a cardboard box??containing my X-ray detector??and X-ray signal detecting Inspector Usb Geiger counter.

The exit of the X-ray collimator is closed by a less than 0.5 mm Al sheet?

The back is a leaded glass with lead polymer sleeves ..to prevent backscatter from the rear and of my collimator?

My X-ray generating tube is placed in such a way that the cathode is closest to the exit of X-ray beam?

Applying the anode heel effect.

I chose a low Z element Cr about 4 by 2 cm approx??for xrf and titanium orthopedic implant.

Since my tube is not an x -ray tube ,it will not tolerate continuous firing?

So I did it with intermittent shots each lasting about 1 sec

Probably a 70 kvp will be more damaging than a 30 kvp like in my setup

You notice a polymer covering for almost everything?

This is a probably antimony polymer from some old stripped medical X-ray aprons courtesy of??a hospital where I work.The X-ray glass was also surplus from my hospital .

Should be sufficient to block 30 kvp X-ray?

Using multiple layers of apron material just in case.

Pics are for my setup,transformer and an exact replica of my X-ray collimator??and a??Cr and Ti pic

Apologies for not showing the X-ray generating tube.

Taray

taray singh

#840

开云体育

Geo

This involves moving the detector ?slightly away from the sample ?and realigning the specimen at an angle such that the incoming beam and detector are looking at the same sample ?broad surface.This will increase the surface area of excitement?

Only drawback is longer distance ?sample to detector?

I was placing more emphasis on distance and sacrificing surface area of contact?

I hope this is what you meant .

I will give it a shot ?next time?

Taray

Show quoted text

On 22 Feb 2020, at 11:34 PM, GEOelectronics@... wrote:

?
It looks good Taray, one thing to try, repeat the setup but put the sample away from the source, sort of like a mirror that the source and sensor are both looking at the same surface?

Geo

----- Original Message -----
From: taray singh via Groups.Io <sukhjez@...>
To: [email protected]
Sent: Fri, 21 Feb 2020 23:02:22 -0500 (EST)
Subject: [XRF] Mini X-ray xrf

Hi guys
This is??my X-ray setup
My x ray generating tube sits within a cylindrical??X-ray??collimator?
This collimator protrudes into??a cardboard box??containing my X-ray detector??and X-ray signal detecting Inspector Usb Geiger counter.
The exit of the X-ray collimator is closed by a less than 0.5 mm Al sheet?
The back is a leaded glass with lead polymer sleeves ..to prevent backscatter from the rear and of my collimator?
My X-ray generating tube is placed in such a way that the cathode is closest to the exit of X-ray beam?
Applying the anode heel effect.
I chose a low Z element Cr about 4 by 2 cm approx??for xrf and titanium orthopedic implant.
Since my tube is not an x -ray tube ,it will not tolerate continuous firing?
So I did it with intermittent shots each lasting about 1 sec
Probably a 70 kvp will be more damaging than a 30 kvp like in my setup
You notice a polymer covering for almost everything?
This is a probably antimony polymer from some old stripped medical X-ray aprons courtesy of??a hospital where I work.The X-ray glass was also surplus from my hospital .
Should be sufficient to block 30 kvp X-ray?
Using multiple layers of apron material just in case.
Pics are for my setup,transformer and an exact replica of my X-ray collimator??and a??Cr and Ti pic
Apologies for not showing the X-ray generating tube.
Taray

#841

Yes that is what I mean. Mine is set op so rays are at 90 degrees to detector, the samples is in the rays but set at 45 degrees so the new rays go to the detector. our yield should increase many times since the new rays come from the excited surface.

Geo

Show quoted text

----- Original Message -----
From: taray singh via Groups.Io <sukhjez@...>
To: [email protected]
Sent: Sat, 22 Feb 2020 11:12:55 -0500 (EST)
Subject: Re: [XRF] Mini X-ray xrf

Geo

This involves moving the detector ?slightly away from the sample ?and realigning the specimen at an angle such that the incoming beam and detector are looking at the same sample ?broad surface.This will increase the surface area of excitement?

Only drawback is longer distance ?sample to detector?

I was placing more emphasis on distance and sacrificing surface area of contact?

I hope this is what you meant .

I will give it a shot ?next time?

Taray

On 22 Feb 2020, at 11:34 PM, GEOelectronics@... wrote:

It looks good Taray, one thing to try, repeat the setup but put the sample away from the source, sort of like a mirror that the source and sensor are both looking at the same surface?

Geo

----- Original Message -----
From: taray singh via Groups.Io <sukhjez@...>
To: [email protected]
Sent: Fri, 21 Feb 2020 23:02:22 -0500 (EST)
Subject: [XRF] Mini X-ray xrf

Hi guys
This is??my X-ray setup
My x ray generating tube sits within a cylindrical??X-ray??collimator?
This collimator protrudes into??a cardboard box??containing my X-ray detector??and X-ray signal detecting Inspector Usb Geiger counter.
The exit of the X-ray collimator is closed by a less than 0.5 mm Al sheet?
The back is a leaded glass with lead polymer sleeves ..to prevent backscatter from the rear and of my collimator?
My X-ray generating tube is placed in such a way that the cathode is closest to the exit of X-ray beam?
Applying the anode heel effect.
I chose a low Z element Cr about 4 by 2 cm approx??for xrf and titanium orthopedic implant.
Since my tube is not an x -ray tube ,it will not tolerate continuous firing?
So I did it with intermittent shots each lasting about 1 sec
Probably a 70 kvp will be more damaging than a 30 kvp like in my setup
You notice a polymer covering for almost everything?
This is a probably antimony polymer from some old stripped medical X-ray aprons courtesy of??a hospital where I work.The X-ray glass was also surplus from my hospital .
Should be sufficient to block 30 kvp X-ray?
Using multiple layers of apron material just in case.
Pics are for my setup,transformer and an exact replica of my X-ray collimator??and a??Cr and Ti pic
Apologies for not showing the X-ray generating tube.
Taray

#845

Nice work and great re-use of available materials.?

Show quoted text

On Fri, Feb 21, 2020, 10:02 PM taray singh via Groups.Io <sukhjez=[email protected]> wrote:

Hi guys

This is??my X-ray setup

My x ray generating tube sits within a cylindrical??X-ray??collimator?

This collimator protrudes into??a cardboard box??containing my X-ray detector??and X-ray signal detecting Inspector Usb Geiger counter.

The exit of the X-ray collimator is closed by a less than 0.5 mm Al sheet?

The back is a leaded glass with lead polymer sleeves ..to prevent backscatter from the rear and of my collimator?

My X-ray generating tube is placed in such a way that the cathode is closest to the exit of X-ray beam?

Applying the anode heel effect.

I chose a low Z element Cr about 4 by 2 cm approx??for xrf and titanium orthopedic implant.

Since my tube is not an x -ray tube ,it will not tolerate continuous firing?

So I did it with intermittent shots each lasting about 1 sec

Probably a 70 kvp will be more damaging than a 30 kvp like in my setup

You notice a polymer covering for almost everything?

This is a probably antimony polymer from some old stripped medical X-ray aprons courtesy of??a hospital where I work.The X-ray glass was also surplus from my hospital .

Should be sufficient to block 30 kvp X-ray?

Using multiple layers of apron material just in case.

Pics are for my setup,transformer and an exact replica of my X-ray collimator??and a??Cr and Ti pic

Apologies for not showing the X-ray generating tube.

Taray