Hi, Nice software, I've just started playing with it. I was looking at a PC MCA but was lucky enough to pick-up an Amptex MCA8000 and 3" scintillation probe...
3248
Geo
K0FF
Mar 1, 2005 3:38 pm
It's a Gamma thing all the way around. Am-241 has a low energy Gamma, to which GM tubes over respond ( assuming they are thin enough wall for it to get inside...
3249
GEOelectronics
K0FF
Mar 1, 2005 5:29 pm
... A: NOT a simple question, there is a LOT of confusion over this topic, and some of it is perpetuated by mistakes. I don't usually comment on Health Physics...
3250
Geo
K0FF
Mar 1, 2005 5:50 pm
Nice catch! Be sure to share your experiments and charts with us. Geo ... Amptex ... of ... sample ... peak ... buffer ... and ... conversion ... techniques, ...
3252
J. Marshall Reber
groschen1936
Mar 1, 2005 7:34 pm
The katt kaught me, therefore a Korrection: In addition, remember that mR/h are only defined for gammas. It is an ionization rate unit. Also, remember mrem/h...
3253
Jim Markitell
jmarkitell
Mar 2, 2005 12:58 am
Hi Seth, Have you ever taken a short cruise along River Road, in Apollo, Pa...about 30 miles N of the city? I missed the Babcox/Wilcox thread, but they had a...
3254
Chris Cavanaugh
night427
Mar 2, 2005 1:31 am
Po 210 emits one photon just out of the range that over excites the LND 712 tube (.804 MeV). As someone else said a gamma scintillator will just pick up the...
3255
Seth Martin
chernobyl_87
Mar 2, 2005 2:28 am
Hey there! Yeah I live 3 miles from that dump site. They burried trucks, barrels etc. in that field. My spring break is next week so I will document readings...
3256
Geo
K0FF
Mar 2, 2005 5:12 am
-Chris, check the charts for the probability of that photon= .000011 not a strong contender! That is only .0011% chance of a hit. That's why I called it puny,...
3259
sonyswradio
Mar 2, 2005 2:28 pm
Does any one know of any safety issues with these counters ? I recently used on and wonderered where these are from over 40 years ago could the unit itself be...
3260
Chris
night427
Mar 2, 2005 2:44 pm
Thanks Geo, still learning to use the Decay Software, great stuff! to easy to click on the particle, need to look at probabilities too. I wasn't aware that...
3261
Chris
night427
Mar 2, 2005 2:51 pm
With any Rad Equipment it is a good idea to check for radiation other than the check source if it has been used, since it may be or have been contaminated....
3262
Geo
K0FF
Mar 2, 2005 7:22 pm
Absolutely! One list member recently received a contaminated probe from eBay. Be especially wary of alpha particles as contamination. Even though they are...
3263
kwcclark
Mar 2, 2005 8:53 pm
Chris, Where are you getting Baby Bens for $10? I've never paid over $3 for any of mine, and not over $4 for Big Bens, (except for a couple of genuine antique...
3264
Chris Cavanaugh
night427
Mar 3, 2005 12:35 am
I am speaking in terms of eBay prices. I just got a GE Telechron at a thrift store for .42 cents (lots of radium and luminous material, not blazingly hot,...
3266
Cynthia Smith
cynthia5128
Mar 3, 2005 1:45 am
If you're buying dark matter on eBay, insist on a flash photograph. Personally I prefer to collect cosmic background radiation. It takes up less space in my...
3267
DH
revtkatt
Mar 3, 2005 3:10 am
... gallon drums ... along the ... A P-32 rat would have decayed at P-32 rates. Also bio-rad-waste emissions would not have gone far under meters of water....
3268
DH
revtkatt
Mar 3, 2005 3:18 am
... Personally I prefer ... my display cabinet. ... The thing is, with dark matter you just throw a few turnips in the flow and measure it. You look for the ...
3269
Cynthia Smith
cynthia5128
Mar 3, 2005 4:40 am
Does this make it any clearer? http://www.astronomy.com/asy/default.aspx?c=a&id=2907 Cynthia. :0) "Peculiar friends are better than no friends at all" (Anon.) ...
3270
Cynthia Smith
cynthia5128
Mar 3, 2005 5:06 am
This is good too. http://www.astronomy.com/asy/default.aspx?c=a&id=2897 Cynthia. "Peculiar friends are better than no friends at all" (Anon.) "Don't torture...
3271
GEOelectronics
K0FF
Mar 3, 2005 5:17 pm
The question was asked "how does the pancake probe compare to the CDV-700's standard #6993 probe?". The quick answer is that a pancake is 5.5 times more...
3272
J. Marshall Reber
groschen1936
Mar 3, 2005 7:30 pm
... In the present tense true. Although Bicron did make a pancake probe with a detachable, energy compensating, beta shield!...
3273
chernobyl_87
Mar 3, 2005 9:10 pm
I want you guys to correct if I am wrong but is the following correct: 11 Na ---> 11 Na + 0e 21 22 1 0e + 0e ----> 2 0 y or gamma or Na-22...
3274
docico325@...
docusn1
Mar 3, 2005 10:19 pm
This site is very interesting does any one have any documentation to its area olong the genesse river I am a short drive from there. As far as for barrels I...
3275
Aaron Muderick
amuderick
Mar 3, 2005 11:20 pm
I don't remember where in the park they were buried. I have a map somewhere but it is buried in 10 years of files. If it ever turns up, I'll post it. _____ ...
3276
Geo
K0FF
Mar 4, 2005 1:00 am
The Na-22 makes positrons, the positrons turn around and make the annihilation X-Ray photons. Any time you see a 511.000 keV photons, they came that way...
3277
DH
revtkatt
Mar 4, 2005 4:39 am
... Bio waste barrels would have P-32, H-3 and other fairly short lived isotopes, all light elements and therefore beta emitters. Good luck finding what's...
3278
DH
revtkatt
Mar 4, 2005 4:51 am
... Most but not all (thereby correcting my prev. post) lighter radioactive elements are beta emitters. They toss a negative so a neutron can become a proton, ...
3282
GEOelectronics
K0FF
Mar 4, 2005 5:29 pm
Activity, defined in Curies is simply the number of *nuclear disintegrations" per second ( or per minute if converted). The real question then is: "what is a...
3283
ianorg
Mar 4, 2005 5:50 pm
Hi, I'm a new member and have been looking around for a good geiger counter. I read the FAQs and they were quite helpfull but hoped somone on the list could...
