spectrum Techniques UCS-20 MCA for sale.
This is the Universal Computer Spectrometer (MCA) that I used for all my sodium iodide (NaI(Tl)), and proportional based MCA, Gamma Spec and XRF, and MCS work with since the beginning of GammaSpectrometry Group
It runs the same USX program (free) as does the UCS-30 but requires a 32 bit computer to work.
Tesed,? $600 + Shipping
GEOelectronics@...
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Re: still confused myself about measurement errors
No the Alpha 6a looks at
alpha spec you can even get a uranium Eprom for it
https://chpconsultants.com/collection/alpha-6a-eprom-for-monitoring-radon-a4-v1-0-2/
Dud
?
From:
[email protected] [mailto:[email protected]] On Behalf Of peter via groups.io
Sent: Wednesday, November 2, 2022
10:33 AM
To:
[email protected]
Subject: Re: Alpha and Beta
particle nuclear decay studies. still confused myself about measurement errors
?
Dud:
?thanks for the reply. I wasn't sure because the Eberline Alpha 6A ( not
-opt1) with the same sensor has a 8 bit resolution for the energy peaks, so I
was led to believe that it could detect the energy of an alpha particle.?
So infact the detector used in the Alpha 6A-opt1? can not resolve the
energy of an alpha particle.
Would you happen to have the specs for the??Quantrad 500-PNC-BNC-Alum 1" sensor?
P
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Re: still confused myself about measurement errors
Dud:
?thanks for the reply. I wasn't sure because the Eberline Alpha 6A ( not -opt1) with the same sensor has a 8 bit resolution for the energy peaks, so I was led to believe that it could detect the energy of an alpha particle.?
So infact the detector used in the Alpha 6A-opt1? can not resolve the energy of an alpha particle.
Would you happen to have the specs for the??Quantrad 500-PNC-BNC-Alum 1" sensor?
P
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Re: still confused myself about measurement errors
Peter,
A Continuous Air Monitor
(CAM) detector is a bit different than the PIPS used for Alpha spec counting in
that they have to operate in an air flow that can be pretty rough, humidity,
corrosive atmospheres, etc so they are ruggedized by having an thin aluminum
surface and a varnish over it to protect the silicon which also to prevents
light from reaching it. A standard PIPS has none of this as it operates in vacuum
chamber.?
The broadening of the FWHM
with distance is due to the angular ray path but for a CAM that distance is
fixed so you will be stuck with that FWHM. Varying the distance between the
detector and source will, as you say, change the energy due to interactions
with the air molecules. It will be seen as a long low energy tail from the peak
energy and with increased distance a shift and broadening in the energy peak to
lower energy.
Dud KK7IF
?
?
Hi:
Please excuse my lack of knowledge. I am new to alpha spectrometry.?
Not having a selection of alpha check sources I was wondering if varying the
distance between a detector and a check source would change the measured energy
? I made the assumption that the alpha particle would loose energy?
through interactions with air during its travel to the detector. Another
assumption I had was that interactions would broaden the measured FWHM of the
measured peak? BTW I have an Eberline Alpha 6A-opt1, which? I believe has
a??Quantrad
500-PNC-BNC-Alum 1" sensor,?but I can't find its specifications.?
I stumbled across and article:??
and inside figure 6 caught my eye. It seems that due to the detector
construction of a PIPS, the closer the detector is to a source, the wider the
fwhm gets. Would that also apply to the detector in the Alpha 6A-opt1?
p
|
still confused myself about measurement errors
Hi:
Please excuse my lack of knowledge. I am new to alpha spectrometry.?
Not having a selection of alpha check sources I was wondering if varying the distance between a detector and a check source would change the measured energy ? I made the assumption that the alpha particle would loose energy? through interactions with air during its travel to the detector. Another assumption I had was that interactions would broaden the measured FWHM of the measured peak? BTW I have an Eberline Alpha 6A-opt1, which? I believe has a??Quantrad 500-PNC-BNC-Alum 1" sensor,?but I can't find its specifications.?
I stumbled across and article:?? and inside figure 6 caught my eye. It seems that due to the detector construction of a PIPS, the closer the detector is to a source, the wider the fwhm gets. Would that also apply to the detector in the Alpha 6A-opt1?
p
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X-Ray Lab data to download.
New "X-Ray Hobby" and "XRL" (X-Ray Lab) sections added to the online archive of Home Lab for free download.
at?https://www.qsl.net/k0ff/Home%20Lab/
Feel free to download any or all sections of the HOME LAB archive, or anything else on the K0FF site.
Geo
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Re: FOCUS: Alpha/Beta Counting (no spectrometry, just counting)
Serhiy, welcome to our little group of alpha-beta spectrometry.
Many of us here have the Eberline Alpha 6-1 head, which we intend to turn into an alpha spectrometer by snatching the signal and feeding it to our MCA spectrometers.
Please post or cross post your experiences with the Alpha-Counting controller to this thread.
Looking forward,
Geo
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Re: [GeigerCounterEnthusiastsGroup] Lab Impex Systems SmartCAM Alpha Beta in Air Monitor
There are a couple of us
that have these and they are great for Radon. It can also do Pu and U which may
be useful in the future. There are some intricacies in setting it up to readout
in pCi/l but we can send that info when you get it hooked up.
Join the alpha spec
group.io
Dud KK7IF
?
?
I bought this thing and now looking for a manual, any help would be
appreciated.
 ?
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Re: Smart Cam Equilibrium factor calcs
Good. My Eberline is a smaller one yet, noisy daiphram type and doesn't have the RAS-1 regulator on it. Part of an old 1" filter sampler and a 1" ZnS(Ag)/ 1"PMT/tray radon detector outfit.
----- Original Message ----- From: Dude <dfemer@...> To: [email protected]Sent: Tue, 16 Aug 2022 20:02:41 -0400 (EDT) Subject: Re: Alpha and Beta particle nuclear decay studies. Smart Cam Equilibrium factor calcs
Geo, I originally had a GAST
pump but it over heated and would trip off. I put an Eberline RAS-1 pump on it
but it is maxed out at 25 LPM after start up at 32 lpm. I get a Filter error
with the Ultra metal filter holder using PTFE or glass 5211 filters but the
original Ultra filter works ok, but not for that price. It does report good data;
Rn Po214, Po214 Po218 and others so it’s doing its job fine. I’m trying figure
out how to get it to report Po-218 and Po 214 in DAC units (pCi/ml) to calc the
equilibration factor for the daughter plate in the room. Get yours going it’s a lot
of fun watch room build up. Dud ? Not I Dudley, haven't had
much time to use it. What air-pump did you finally settle on and what flow rate
made the IMPEX happy? ----- Original Message
-----
From: Dude <dfemer@...>
To: [email protected]
Sent: Tue, 16 Aug 2022 16:54:21 -0400 (EDT)
Subject: Alpha and Beta particle nuclear decay studies. Smart Cam Equilibrium
factor calcs Here’s a good paper on calculating equilibrium factors using a
smart Cam amongst other techniques. However does anyone know how to get the smart Cam to report Po 218
and
Po 214 in pCi/ml or DAC? All I can get is CPS. Dud
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Re: Smart Cam Equilibrium factor calcs
Geo,
I originally had a GAST
pump but it over heated and would trip off. I put an Eberline RAS-1 pump on it
but it is maxed out at 25 LPM after start up at 32 lpm. I get a Filter error
with the Ultra metal filter holder using PTFE or glass 5211 filters but the
original Ultra filter works ok, but not for that price. It does report good data;
Rn Po214, Po214 Po218 and others so it’s doing its job fine. I’m trying figure
out how to get it to report Po-218 and Po 214 in DAC units (pCi/ml) to calc the
equilibration factor for the daughter plate in the room.
Get yours going it’s a lot
of fun watch room build up.
Dud
?
Not I Dudley, haven't had
much time to use it. What air-pump did you finally settle on and what flow rate
made the IMPEX happy?
toggle quoted message
Show quoted text
----- Original Message
-----
From: Dude <dfemer@...>
To: [email protected]
Sent: Tue, 16 Aug 2022 16:54:21 -0400 (EDT)
Subject: Alpha and Beta particle nuclear decay studies. Smart Cam Equilibrium
factor calcs
Here’s a good paper on calculating equilibrium factors using a
smart Cam amongst other techniques.
However does anyone know how to get the smart Cam to report Po 218
and
Po 214 in pCi/ml or DAC? All I can get is CPS.
Dud
|
Re: Smart Cam Equilibrium factor calcs
Not I Dudley, haven't had much time to use it. What air-pump did you finally settle on and what flow rate made the IMPEX happy?
Geo
----- Original Message ----- From: Dude <dfemer@...> To: [email protected]Sent: Tue, 16 Aug 2022 16:54:21 -0400 (EDT) Subject: Alpha and Beta particle nuclear decay studies. Smart Cam Equilibrium factor calcs
Here’s a good paper on calculating equilibrium factors using a
smart Cam amongst other techniques. However does anyone know how to get the smart Cam to report Po 218 and
Po 214 in pCi/ml or DAC? All I can get is CPS. Dud
|
Smart Cam Equilibrium factor calcs
Here’s a good paper on calculating equilibrium factors using a
smart Cam amongst other techniques.
However does anyone know how to get the smart Cam to report Po 218 and
Po 214 in pCi/ml or DAC? All I can get is CPS.
Dud
|
JIGSAW PUZZLE PROJECT MODULES presently available
The Show2Me Counter boards with updates installed, minus the daughter CPU module are ready in limited quantities.
The V02 HVG/L (High Voltage Generator) with actual Ludlum supplied OEM transformers are ready, only 25 available
The PRE-3 stuffed boards are ready, as are the bare PCB for the bold.
We're putting together Experimenter Kits starting today, any member who was part of the JIGSAW project can ask for these as well as any member who has an experiment box in the works.
Advanced members who were not in the original design group may join at any time and contribute knowledge to the rest of us.
PLEASE BE AWARE:?These are never to be used in a commercial product or sold alone, they may be gifted to another amateur scientist if you are finished with them, they may be freely used as demonstration hardware in videos and print, but please credit GEOelectronics. They are a gift from GEOelectronics, to be used as non-profit educational and personal Physics experiment/ research tools. Any use of a module or instrument provided by GEOelectronics should be credited as such.
The?JIGSAW?PUZZLE PROJECT?is a series of modules we built, they stack together to for any number of rad-detection related tasks, GM tube, Scintillator, even Proportional tube, The main module is a 400 to 2500V DC HV Bias supply, the PRE-3 is a set of 3 cascaded preamplifiers on a single pcb, user selectable line up, and contains the master gain control, while the "Show2Me" Counter pcb does the control and readout functions.
There are other modules for special functions.
Each pcb is a circuit element, they are discussed separately as circuit elements on the JIGSAW chat groups.
"Systems Integration" group is the discussion of how to use the various modules into complete device, or to add one or more modules to an existing platform.? One member used his PRE-3 to replace the entire damaged-beyond-repair preamplifier in a Ludlum bench scaler!
JIGSAW Puzzle Project?Links:
/g/GEO-HVG/topics
/g/GEO-PRE-3/topics
/g/GEO-COUNTER/topics?(Show2Me)?
/g/GEO-DCA/topics?(Dual Channel Analyzer i.e. two separate Single channel analyzers)
?
/g/GEO-DD/topics?(Digital Divider, a stand alone accessory)
?
/g/GEO-PRE-3/topics
/g/GEO-SHOW2ME/topics
/g/GEO-System-Integration/topics
Our other science groups list:? NOTE not all groups are presently populated or active. Some are place holders for yet to be published papers and experiments, some are archived posts from our former Yahoo Groups of the same name (back to 2003), and some are WIKIed already because we used up all the free memory spaced and moved on to the Page-2 (and so-on.) version until it gets WIKIed..
/g/Alpha-Beta-Gamma-Society/topics
/g/AlphaBetaSpectrometry/topics
/g/CDV700CLUB/topics
/g/GammaSpectrometry-Archives/topics
/g/GammaSpectrometryGroup/topics
/g/GeigerCounterEnthusiasts-Archives/topics
/g/GeigerCounterEnthusiastsGroup/topics
/g/GEOelectronics/topics
/g/GEO-Preamplifiers/topics
/g/GeorgeDowell-HomeRadLab/topics
/g/GeorgeDowell-MicrowaveOpticsLab/topics
/g/GeorgeDowell-XRF-NDT-LAB/topics
/g/High-Energy-Physics/topics
/g/LENi-Geiger-Counter/topics
/g/neonixie-l/topics
/g/Nucleonics/topics
/g/RadonThoronPhysics/topics
/g/XRD/topics
/g/XRF/topics
/g/XRF-Page-2/topics
/g/XRF-Page-3/topics
/g/XRL/topics
Have fun
Groups Owner-
George Dowell
"Geo"
Ham Radio> K0FF
?
?
?
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FOCUS: Alpha/Beta Counting (no spectrometry, just counting)
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Re: [GeigerCounterEnthusiastsGroup] Anybody here win the EG&G Ortec 4001A Bin Chassis Nice NIM alpha spec for cheap. I hope someone in our circle got it. Geo
I have detectors so don’t
let that bother you next time
Dud
?
From:
[email protected]
[mailto:[email protected]] On Behalf Of Alan Jose
Sent: Wednesday, July 6, 2022 4:08
PM
To:
[email protected]
Subject: Re:
[GeigerCounterEnthusiastsGroup] Anybody here win the EG&G Ortec 4001A Bin
Chassis Nice NIM alpha spec for cheap. I hope someone in our circle got it. Geo
?
I was tempted too but I figured the detector probably wasn’t there or
maybe bad hence no photo of it. Based on that I No Bid it.?
toggle quoted message
Show quoted text
HA! I asked for same and was told they would, but didn't. Even tho I
had no intention of bidding on it, so anyway I was waiting for those pics
before posting anything about it.
PS Covid cases jumped to 160k yesterday, some say this is the second
worst case surge since it began.
Be careful out there, for some reason August winds up being the most
deadly month, year after year.
----- Original Message -----
From: Nick Andrews <nickjandrews@...>
To: [email protected]
Sent: Wed, 06 Jul 2022 17:55:56 -0400 (EDT)
Subject: Re: [GeigerCounterEnthusiastsGroup] Anybody here win the EG&G
Ortec 4001A Bin Chassis Nice NIM alpha spec for cheap. I hope someone in our
circle got it. Geo
Not me.? ?I asked for a picture inside the alpha unit to see
if the detector is there but didn't get it.? Oh well,? didn't need
it.? ?Nice crate though.?
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Re: Anybody here win the EG&G Ortec 4001A Bin Chassis
Not me, got outbid at the end.?
Nice NIM alpha spec for cheap. I hope someone in our circle got it.
Geo
|
Anybody here win the EG&G Ortec 4001A Bin Chassis
Nice NIM alpha spec for cheap. I hope someone in our circle got it.
Geo
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FOCUS: Air Flow Regulators and Indicators
Found on eBay :Nice cheap airflow regulator and filter bottle $25 shipped.  Clever Eberline design, balanced/bypass regulator allows pump to run at constant speed. Looks like it can control up to 4 CFM. Some data attached, some of it within an instruction manual for a specific air flow detector, but same device used for all. There is a newer version Rap-3 which I am not familiar with. Something like this might be good for our current project and certainly for other such projects. Geo ?
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On Sat, Jul 2, 2022 at 12:05 AM, Dude wrote:
?"Both show some Po212 at 8.78 and some beta or noise below 2 MeV."
Not had experience with these detectors yet. 3 other units I have are both alpha and beta capable. The one I've looked into so far has a simple switch to change over for one to another, no schematic but the circuit seems to do nothing but change the bias level. The other ones we have books for, so I'll dig into them, unless our collogue Alan has already, what say you Alan? happy .25July?
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Nick/Geo
Here’s a run of 4.7 hrs using the cheap Chinese PTFE 47mm filter
in an Ultra metal filter holder. Compare the spectra with Nicks run using Geo’s
filter paper roll material. The PTFE has a very good peak shape compared to the
roll material which has long tails and doesn’t separate the Po218 and
Po214 peaks. Note also that peak ratio’s of the 218 and 214 on both are similar.
?Both show some Po212 at 8.78 and some beta or noise below 2 MeV.
I haven’t had any luck so far trying to run the Hi-Q filters as I
get a filter error due to pressure differential. I’ll run the Ultra filter
next for comparison.
Dud
?
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Nick Andrews
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