Geo'e different GROUPS.io Groups for different topics.
When we changed over from Yahoo Groups to Groups.io Groups? some changes were made.? To avoid 75,000 unrelated posts again, the subject matter was divided up into specialty groups?to allow us to focus on specific areas of interest. Of course there is some overlap, but for example the?XRF Group is for purposely excited XRF using advanced X-Ray detectors, including solid state, proportional, and on occasion scintillation detectors. For THEREMINO or basic scintillator? questions and reporting continue using GammaSpectroscopy group headed up by C.R. GammaSpectrometryGroup headed up by myself (Geo) we have a place for advance techniques non-excited Gamma (and X-Ray) Spectrum analysis discussions. Again for THEREMINO and basic scintillator discussions see CR's group GammaSpectroscopy.
Notice in the list below is a group called XRF/NDT. NDT means Non Destructive Testing. This is where deep diving into Raman Spectrometry, LIBS and other advanced techniques users can cluster. Following is? a list of Groups.io Groups set up and run by yours truly. George Dowell Geo>K0FF
Alpha-Beta-Gamma-Society
?CDV700CLUB
?GammaSpectrometry-Archives
?GammaSpectrometryGroup
?GeigerCounterEnthusiasts-Archives
?GeigerCounterEnthusiastsGroup
?GEO-COUNTER MODULE FOCUS GROUP
?GEO-DCA and BUFFER-4 Focus Group
?GEO-DD
?GEOelectronics
?GEO-HVG HIGH VOLTAGE GENERATOR MODULE FOCUS GROUP
?GEO-PRE-3 3 Stage PREAMPLIFIER MODULE FOCUS GROUP
?ALL FORMS OF NUCLEAR INSTRUMENTATION PREAMPS AND LINE DRIVERS
?GeorgeDowell-HomeRadLab
?GeorgeDowell-MicrowaveOpticsLab
?GeorgeDowell-XRF-NDT-LAB
?GEO-SHOW2ME DISPLAY AND CONTROL MODULE FOCUS GROUP
?GEO-System-Integration
?K0FF-Observable-Fisics-Forum
?LENi-Geiger-Counter
?Nucleonics
?XRF
|
Re: Welcome new member Justin.
Nick, once again I have to say that it would be awesome if we lived closer together. ;) The overlap in our stashes of goodies, and thus interests, is significant.
-Dave
toggle quoted message
Show quoted text
On 12/3/20 11:48 PM, Nick Andrews wrote: I have several more of those ancient rack units,? Scientific Atlanta stuff from an old satellite tracking station that was at NMSU/PSL.
Among other things. Hard to believe,? I know...
On Thu, Dec 3, 2020, 7:06 PM <GEOelectronics@... <mailto:GEOelectronics@...>> wrote:
Good to know we have a member who can cut keyways and slots!
And I have the Esterline-Angus chart recorder in it's own suitcase
that goes with that recorded.
Geo
----- Original Message -----
From: Nick Andrews <nickjandrews@...
<mailto:nickjandrews@...>>
To: [email protected] <mailto:[email protected]>
Sent: Thu, 03 Dec 2020 16:53:08 -0500 (EST)
Subject: Re: [XRF] Welcome new member Justin.
Here's some of what followed me home.
On Thu, Dec 3, 2020, 1:26 PM <GEOelectronics@...
<mailto:GEOelectronics@...>> wrote:
Yikes, Logans are classic, lathes too-sweet but dangerous.
Geo
------------------------------------------------------------------------
*From: *"Nick Andrews" <nickjandrews@...
<mailto:nickjandrews@...>>
*To: *[email protected] <mailto:[email protected]>
*Sent: *Thursday, December 3, 2020 12:37:25 PM
*Subject: *Re: [XRF] Welcome new member Justin.
Yes, welcome!? And to add on Geo's statement, many of us are
into all sorts of related topics, like vacuum tube tech, high
voltage, high energy physics/chemistry, and many are wannabe
machinists.? I just bought a 8" Logan metal shaper when visiting
my parents.? Talk about semi-obsolete technology...
On Thu, Dec 3, 2020 at 11:53 AM <GEOelectronics@...
<mailto:GEOelectronics@...>> wrote:
Hi Justin and welcome to our small but intense group of
XRF'ers. Also noticed you joined GammaSpectrometryGroup.
We try to keep XRF Group centered on advanced XRF topics
(SDD, SI-PIN, CdTe, CZT detectors, NIM etc), and
GammaSpectrometry for everything else having to do with
advanced Gamma Spec work.
For general radiation, detection thereof,? and all things
THEREMINO, use the GammaSpectroscopy? (not
GammaSPectrometry) group.
George Dowell
"Geo"
PS many of us on all these groups are also Ham Radio
enthusiasts.
Geo>K0FF
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Re: Welcome new member Justin.
No rings,? necklaces,? long sleeves,? gloves,? or loose clothing near the machines.? That's a pretty bad one.? He'd probably done that a thousand times before.?
I don¡¯t think it will work for me to include the video as an attachment, but I¡¯ll give it a try¡ ? Ken ? From: Dude
Sent: Thursday, December 3, 2020 05:16 PM
To: [email protected]
Subject: Re: [XRF] Welcome new member Justin. ? Ken, I¡¯m not on Face book and can¡¯t log in. Can you post a public link. Dud ? ?
|
Re: Welcome new member Justin.
I have several more of those ancient rack units,? Scientific Atlanta stuff from an old satellite tracking station that was at NMSU/PSL.? Among other things. Hard to believe,? I know...
Good to know we have a member who can cut keyways and slots!
And I have the Esterline-Angus chart recorder in it's own suitcase that goes with that recorded.
Geo ----- Original Message ----- From: Nick Andrews < nickjandrews@...> To: [email protected]Sent: Thu, 03 Dec 2020 16:53:08 -0500 (EST) Subject: Re: [XRF] Welcome new member Justin.
Here's some of what followed me home.?
Yikes, Logans are classic, lathes too-sweet but dangerous. Geo
Yes, welcome!? And to add on Geo's statement, many of us are into all sorts of related topics, like vacuum tube tech, high voltage, high energy physics/chemistry, and many are wannabe machinists.? I just bought a 8" Logan metal shaper when visiting my parents.? Talk about semi-obsolete technology...
Hi Justin and welcome to our small but intense group of XRF'ers. Also noticed you joined GammaSpectrometryGroup.
We try to keep XRF Group centered on advanced XRF topics (SDD, SI-PIN, CdTe, CZT detectors, NIM etc), and GammaSpectrometry for everything else having to do with advanced Gamma Spec work.?
For general radiation, detection thereof,? and all things THEREMINO, use the GammaSpectroscopy? (not GammaSPectrometry) group.
George Dowell
"Geo"
PS many of us on all these groups are also Ham Radio enthusiasts.
Geo>K0FF
|
Re: Welcome new member Justin.
Soren,
Thanks for the links The
Open Raman is the best technical DIY one I¡¯ve been following but he uses rather
expensive open beam Thorlabs parts ($3,000) where I want to use fiber. ?http://www.thepulsar.be/article/openraman-starter-edition/
I have a B&W 473nm Raman
laser and spectrometer but no software and for mineral work it¡¯ll have a lot of
fluorescence.
I run Ocean Optics and
Stellarnet spectrometers with both their factory software and Spectragryph for
optical reflectance and LIBS and Spectragryph for XRF and gamma spec. I was
planning on using one of those for the Raman but finding a single mode laser
cheap enough is a problem not to mention the dichroic and edge filter. However it
is in the bucket list.
Dud
?
Dud,
RE: Raman spectroscopy - Certainly, I'll post something in it's own thread when
I get everything working. ?
In the meantime, here are a few things I've found:
- Typically Raman and cheap do not go together -
much to my chagrin
- I got started by looking at this project:?
- I have also followed this project quite a
bit:?
- He has a blog that gives more detail, especially
on his attempts to get a working CCD:?
- I originally wanted to try to build the whole
thing from scratch - then I got impatient and realized I was going to need
a metal mill and/or drill press if I was going to fabricate everything
including the kinematic mounts - so instead I decided to modify an
existing microscope and hack together a makeshift spectrometer from Ocean
Optics surplus parts
- Ocean Optics seem to be the Amptek of the
UV-VIS-NIR world and their products are widely supported by 3rd party
software, such as Spectagryph, which is appealing:
- Probably the best implementation out there is the
Open Raman Project
- The key (read: expensive) parts are:
- Good dichroic mirror and band-block filter -
There used to be an Ebay store that sold a ton of surplus filters
(production overruns) from Omega Filters ()
but it looks like Omega was just acquired and the eBay store doesn't have
the thousands of filters that were there just a few months ago
- Powerful, Monochromatic Laser - I use a lower
end JDS Uniphase laser, but it's a bit weak. Their higher end Coherent
Compass laser are more powerful with a more monochromatic beam - but not
cheap
- Osram seems to be producing green LEDs that are
single mode and display a very monochromatic beam and they are cheap.
But, they typically come in at 510 or 520nm, whereas the traditional
lasers were 532nm because they were frequency doubled 1064nm IR lasers.
A lot of surplus optics out there are catered to the 532nm laser - e.g.
540nm cut off, which you wouldn't want for a 510nm laser
- The problems I have had are:
- properly launching the Raman output from the
microscope into a fiber - I just got some fiber collimators that I'll
experiment with
- too much noise in the spectrometer at long integration
times - this means that I either need a more powerful laser or TEC
cooling of the CCD sensor or both
- Thunder Optics is one of the cheaper turnkey
solutions but they are still not cheap
- My favorite YouTube channel "Applied
Science" did an episode on a quick down and dirty Raman system that
shows cheap proof of concept:?
Good luck,
Soren
|
Re: Welcome new member Justin.
Dud, RE: Raman spectroscopy - Certainly, I'll post something in it's own thread when I get everything working. ? In the meantime, here are a few things I've found:
- Typically Raman and cheap do not go together - much to my chagrin
- I got started by looking at this project:?
- I have also followed this project quite a bit:?
- He has a blog that gives more detail, especially on his attempts to get a working CCD:?
- I originally wanted to try to build the whole thing from scratch - then I got impatient and realized I was going to need a metal mill and/or drill press if I was going to fabricate everything including the kinematic mounts - so instead I decided to modify an existing microscope and hack together a makeshift spectrometer from Ocean Optics surplus parts
- Ocean Optics seem to be the Amptek of the UV-VIS-NIR world and their products are widely supported by 3rd party software, such as Spectagryph, which is appealing:
- Probably the best implementation out there is the Open Raman Project
- The key (read: expensive) parts are:
- Good dichroic mirror and band-block filter - There used to be an Ebay store that sold a ton of surplus filters (production overruns) from Omega Filters () but it looks like Omega was just acquired and the eBay store doesn't have the thousands of filters that were there just a few months ago
- Powerful, Monochromatic Laser - I use a lower end JDS Uniphase laser, but it's a bit weak. Their higher end Coherent Compass laser are more powerful with a more monochromatic beam - but not cheap
- Osram seems to be producing green LEDs that are single mode and display a very monochromatic beam and they are cheap. But, they typically come in at 510 or 520nm, whereas the traditional lasers were 532nm because they were frequency doubled 1064nm IR lasers. A lot of surplus optics out there are catered to the 532nm laser - e.g. 540nm cut off, which you wouldn't want for a 510nm laser
- The problems I have had are:
- properly launching the Raman output from the microscope into a fiber - I just got some fiber collimators that I'll experiment with
- too much noise in the spectrometer at long integration times - this means that I either need a more powerful laser or TEC cooling of the CCD sensor or both
- Thunder Optics is one of the cheaper turnkey solutions but they are still not cheap
- My favorite YouTube channel "Applied Science" did an episode on a quick down and dirty Raman system that shows cheap proof of concept:?
Good luck, Soren
|
Re: Welcome new member Justin.
That worked? - Thanks
Dud
?
?
I
don¡¯t think it will work for me to include the video as an attachment, but I¡¯ll
give it a try¡
?
Ken
?
toggle quoted message
Show quoted text
From: Dude
Sent: Thursday, December 3, 2020
05:16 PM
To: [email protected]
Subject: Re: [XRF] Welcome new
member Justin.
?
Ken,
I¡¯m not on Face book and
can¡¯t log in. Can you post a public link.
Dud
?
?
|
Re: Amptek SiPIN vs FastSDD - Recommendations?
Hi Michael. Welcome!
The "Topics" are groupings of messages on a single topic. Yes the first posts were about the jargon we use and definitions etc.
Geo
----- Original Message ----- From: Michael Sears <msears@...> To: [email protected]Sent: Thu, 03 Dec 2020 16:03:21 -0500 (EST) Subject: Re: [XRF] Amptek SiPIN vs FastSDD - Recommendations?
Hi George, I recently joined the group, so sorry if I am being a bit dense here. I am having trouble finding?
"the first message on this board"? ?
I have read through some initial? posts circa 2018? ?post#1 RE: Technical Terms Are you talking about a different group of post that shows pictures of a bud box enclosure housing an OEM sensor package and dp5?
Love the content on here. so glad I stumbled?across?your group.
Warm regards Michael
|
Re: Welcome new member Justin.
I don¡¯t think it will work for me to include the video as an attachment, but I¡¯ll give it a try¡ ? Ken ?
toggle quoted message
Show quoted text
From: DudeSent: Thursday, December 3, 2020 05:16 PM To: [email protected]Subject: Re: [XRF] Welcome new member Justin. ? Ken, I¡¯m not on Face book and can¡¯t log in. Can you post a public link. Dud ? ?
|
Re: Welcome new member Justin.
Good to know we have a member who can cut keyways and slots!
And I have the Esterline-Angus chart recorder in it's own suitcase that goes with that recorded.
Geo
----- Original Message ----- From: Nick Andrews <nickjandrews@...> To: [email protected]Sent: Thu, 03 Dec 2020 16:53:08 -0500 (EST) Subject: Re: [XRF] Welcome new member Justin.
Here's some of what followed me home.?
Yikes, Logans are classic, lathes too-sweet but dangerous. Geo
Yes, welcome!? And to add on Geo's statement, many of us are into all sorts of related topics, like vacuum tube tech, high voltage, high energy physics/chemistry, and many are wannabe machinists.? I just bought a 8" Logan metal shaper when visiting my parents.? Talk about semi-obsolete technology...
Hi Justin and welcome to our small but intense group of XRF'ers. Also noticed you joined GammaSpectrometryGroup.
We try to keep XRF Group centered on advanced XRF topics (SDD, SI-PIN, CdTe, CZT detectors, NIM etc), and GammaSpectrometry for everything else having to do with advanced Gamma Spec work.?
For general radiation, detection thereof,? and all things THEREMINO, use the GammaSpectroscopy? (not GammaSPectrometry) group.
George Dowell
"Geo"
PS many of us on all these groups are also Ham Radio enthusiasts.
Geo>K0FF
|
Re: Amptek SiPIN vs FastSDD - Recommendations?
Hi George, I recently joined the group, so sorry if I am being a bit dense here. I am having trouble finding?
"the first message on this board"? ?
I have read through some initial? posts circa 2018? ?post#1 RE: Technical Terms Are you talking about a different group of post that shows pictures of a bud box enclosure housing an OEM sensor package and dp5?
Love the content on here. so glad I stumbled?across?your group.
Warm regards Michael
|
Re: Amptek SiPIN vs FastSDD - Recommendations?
Hi Soren
Welcome to this group
Here is file comparing xrf detectors
With fine tuning of Si Pin with long count rates,gains ,peaking time ,geometry and proper sampling techniques one can go beyond some of the manufacturer¡¯s limitations.
Taray
|
Hi Scott. Maybe sometime you can share a few pictures of the reds here, top and bottom. The big green one I've been working with - on the bottom instead of sand is a bed of tektites consisting of many beads, a few connected dumbells and some tiny beads melted into the surface of bigger beads, then a layer really clear, shiny? green melt glass then topped with dusty green melt glass.?
Do you have any with black on the bottom? We've read that the paved roads pretty much survived the blast, and I think the black on the bottom instead of sand is melt glass that fell onto the macadam roads.
Thanks for checking in.
Geo
----- Original Message ----- From: SCOTT CAMPBELL <bchhunter98@...> To: [email protected], GEOelectronics@... Sent: Thu, 03 Dec 2020 18:50:40 -0500 (EST) Subject: Re: [XRF] Trinitite
Hello Geo, Nice find... I have quite a few many outstanding specimens of Red...some highly magnetic "like fly off the table when magnet comes near"?
On 12/03/2020 12:34 PM geoelectronics@... wrote:
?
?
Red Trinitite sample, first found (by me) iron sphere tektite.
?4 to 5mm diameter, Quite magnetic.
Looks like a challenging XRF target!
Geo
|
Re: Welcome new member Justin.
Hi Did and others.? I'll try to find a public link to the video. I tried to dissect the html source of the Facebook link to the video, but didn't have any success.? I'll keep trying to find a public link. Ken, WB?OCV
On Dec 3, 2020 17:13, Dude <dfemer@...> wrote:
Ken,
I¡¯m not on Face book and
can¡¯t log in. Can you post a public link.
Dud
?
?
Greetings
to the group,
?
I
wanted to weigh in on this thread about machine shops, lathes, etc.? As a
farm kid who grew up around shop equipment and exposed PTO (power take off)
shafts on tractors, I gained a lot of respect for moving equipment.?
?
I¡¯m
not sure if this posted link will work for the rest of the group, but I thought
it worth sharing as it is relevant to the discussion.? I just got this
from an old high school buddy back in the farm country of Nebraska, although
given the clothing in the video, I suspect it was likely in an oil field in the
hinterlands of somewhere north.
?
??
***WARNING*** !!? Graphic Content!!? As gruesome as this video is, I
think it should be shown as required training in every machine shop, and even
every high school shop class as to what damage an operating machine can
produce.
?
?
Sorry
if this upsets anyone, but it is a somber reminder of the power of equipment
designed to easily cut and machine big metal parts.? A human body is a
trifle to these machines.
?
?
?
Yikes, Logans are classic,
lathes too-sweet but dangerous.
From: "Nick
Andrews" <nickjandrews@...>
To: [email protected]
Sent: Thursday, December 3, 2020
12:37:25 PM
Subject: Re: [XRF] Welcome new
member Justin.
Yes, welcome!? And to
add on Geo's statement, many of us are into all sorts of related topics, like
vacuum tube tech, high voltage, high energy physics/chemistry, and many are
wannabe machinists.? I just bought a 8" Logan metal shaper when
visiting my parents.? Talk about semi-obsolete technology...
?
|
Hello Geo,
Nice find...
I have quite a few many outstanding specimens of Red...some highly magnetic "like fly off the table when magnet comes near"?
On 12/03/2020 12:34 PM geoelectronics@... wrote:
?
?
Red Trinitite sample, first found (by me) iron sphere tektite.
?4 to 5mm diameter, Quite magnetic.
Looks like a challenging XRF target!
Geo
|
Re: Welcome new member Justin.
Soren,
Keep us up to date on your
progress on Raman spectroscopy, a couple of us here are interested in getting a
DIY system running for mineral ID¡.cheaply
Dud KK7IF
?
Dear Geo,
Thanks. I'm a wannabe wannabe machinist. Right now, a wannabe welder - next
year a wannabe machinist. Nice to hear that people are into HAM radio. Being a
young person, I come from the SDR world of GNUradio, HackRF, and RTLSDR.?
I like to build/repair analytical equipment - especially vintage stuff that is
actually made of discrete components (and which was made before I was born).
I'm currently retrofitting an old Zeiss (West Germany) microscope with the
optics to do some Raman Spectroscopy. The amazing thing about it is that, every
single part screws together - nothing is welded - everything comes apart - it
was meant to be repaired.
All the best,
Justin ("Soren")
|
Re: Welcome new member Justin.
Link didn't work for me either.? Somewhere, I have a picture from eastern Europe where a fellow got pulled into a large lathe turning what looks like a 12" diameter object.? You can identify one of the eyeballs in the mess.? Not pretty.
On Thu, Dec 3, 2020 at 4:13 PM Dude < dfemer@...> wrote:
Ken,
I¡¯m not on Face book and
can¡¯t log in. Can you post a public link.
Dud
?
?
Greetings
to the group,
?
I
wanted to weigh in on this thread about machine shops, lathes, etc.? As a
farm kid who grew up around shop equipment and exposed PTO (power take off)
shafts on tractors, I gained a lot of respect for moving equipment.?
?
I¡¯m
not sure if this posted link will work for the rest of the group, but I thought
it worth sharing as it is relevant to the discussion.? I just got this
from an old high school buddy back in the farm country of Nebraska, although
given the clothing in the video, I suspect it was likely in an oil field in the
hinterlands of somewhere north.
?
??
***WARNING*** !!? Graphic Content!!? As gruesome as this video is, I
think it should be shown as required training in every machine shop, and even
every high school shop class as to what damage an operating machine can
produce.
?
?
Sorry
if this upsets anyone, but it is a somber reminder of the power of equipment
designed to easily cut and machine big metal parts.? A human body is a
trifle to these machines.
?
?
?
Yikes, Logans are classic,
lathes too-sweet but dangerous.
Yes, welcome!? And to
add on Geo's statement, many of us are into all sorts of related topics, like
vacuum tube tech, high voltage, high energy physics/chemistry, and many are
wannabe machinists.? I just bought a 8" Logan metal shaper when
visiting my parents.? Talk about semi-obsolete technology...
?
|
Re: Welcome new member Justin.
Ken,
I¡¯m not on Face book and
can¡¯t log in. Can you post a public link.
Dud
?
?
Greetings
to the group,
?
I
wanted to weigh in on this thread about machine shops, lathes, etc.? As a
farm kid who grew up around shop equipment and exposed PTO (power take off)
shafts on tractors, I gained a lot of respect for moving equipment.?
?
I¡¯m
not sure if this posted link will work for the rest of the group, but I thought
it worth sharing as it is relevant to the discussion.? I just got this
from an old high school buddy back in the farm country of Nebraska, although
given the clothing in the video, I suspect it was likely in an oil field in the
hinterlands of somewhere north.
?
??
***WARNING*** !!? Graphic Content!!? As gruesome as this video is, I
think it should be shown as required training in every machine shop, and even
every high school shop class as to what damage an operating machine can
produce.
?
?
Sorry
if this upsets anyone, but it is a somber reminder of the power of equipment
designed to easily cut and machine big metal parts.? A human body is a
trifle to these machines.
?
?
toggle quoted message
Show quoted text
From: GEOelectronics@...
Sent: Thursday, December 3, 2020
02:26 PM
To: [email protected]
Subject: Re: [XRF] Welcome new
member Justin.
?
Yikes, Logans are classic,
lathes too-sweet but dangerous.
From: "Nick
Andrews" <nickjandrews@...>
To: [email protected]
Sent: Thursday, December 3, 2020
12:37:25 PM
Subject: Re: [XRF] Welcome new
member Justin.
Yes, welcome!? And to
add on Geo's statement, many of us are into all sorts of related topics, like
vacuum tube tech, high voltage, high energy physics/chemistry, and many are
wannabe machinists.? I just bought a 8" Logan metal shaper when
visiting my parents.? Talk about semi-obsolete technology...
?
|
Re: Welcome new member Justin.
Big fun part of an old spectrometer.? I dismantled two of them.? ?One was this vacuum tube for the rf generator,? the other is solid state.? The main power supplies are crazy heavy.?
Yikes, Logans are classic, lathes too-sweet but dangerous. Geo
Yes, welcome!? And to add on Geo's statement, many of us are into all sorts of related topics, like vacuum tube tech, high voltage, high energy physics/chemistry, and many are wannabe machinists.? I just bought a 8" Logan metal shaper when visiting my parents.? Talk about semi-obsolete technology...
Hi Justin and welcome to our small but intense group of XRF'ers. Also noticed you joined GammaSpectrometryGroup.
We try to keep XRF Group centered on advanced XRF topics (SDD, SI-PIN, CdTe, CZT detectors, NIM etc), and GammaSpectrometry for everything else having to do with advanced Gamma Spec work.?
For general radiation, detection thereof,? and all things THEREMINO, use the GammaSpectroscopy? (not GammaSPectrometry) group.
George Dowell
"Geo"
PS many of us on all these groups are also Ham Radio enthusiasts.
Geo>K0FF
|
Re: Welcome new member Justin.
Mmm, some very nice older microwave hardware there!
-Dave
toggle quoted message
Show quoted text
On 12/3/20 4:54 PM, Nick Andrews wrote: Likely not much use to me,? but can't bear to toss some stuff...
On Thu, Dec 3, 2020, 1:26 PM <GEOelectronics@... <mailto:GEOelectronics@...>> wrote:
Yikes, Logans are classic, lathes too-sweet but dangerous.
Geo
------------------------------------------------------------------------
*From: *"Nick Andrews" <nickjandrews@...
<mailto:nickjandrews@...>>
*To: *[email protected] <mailto:[email protected]>
*Sent: *Thursday, December 3, 2020 12:37:25 PM
*Subject: *Re: [XRF] Welcome new member Justin.
Yes, welcome!? And to add on Geo's statement, many of us are into
all sorts of related topics, like vacuum tube tech, high voltage,
high energy physics/chemistry, and many are wannabe machinists.? I
just bought a 8" Logan metal shaper when visiting my parents.? Talk
about semi-obsolete technology...
On Thu, Dec 3, 2020 at 11:53 AM <GEOelectronics@...
<mailto:GEOelectronics@...>> wrote:
Hi Justin and welcome to our small but intense group of XRF'ers.
Also noticed you joined GammaSpectrometryGroup.
We try to keep XRF Group centered on advanced XRF topics (SDD,
SI-PIN, CdTe, CZT detectors, NIM etc), and GammaSpectrometry for
everything else having to do with advanced Gamma Spec work.
For general radiation, detection thereof,? and all things
THEREMINO, use the GammaSpectroscopy? (not GammaSPectrometry) group.
George Dowell
"Geo"
PS many of us on all these groups are also Ham Radio enthusiasts.
Geo>K0FF
--
Dave McGuire, AK4HZ
New Kensington, PA
|
Dave McGuire
Nick Andrews
Michael Sears
SCOTT CAMPBELL
