The new digital scale arrived the other day and I must say it does compliment the Home Lab. I chose the OHAUS CS-200 for my purchase, it has a large deck to...
Whining in the earphone, CDV-700 by ENi, often a problem. Several causes have been located and documented ( bad electrolytic filter, bad transistors, bad...
In NE MO where I live and have the Home Lab, background radiation runs around 10 uR/H from natural sources, mostly K-40. This radiation field will give far...
1 ATM ( atmospheric pressure) Ion Chambers, even of excellent modern design reach their low end at about 3 mR/H full scale. This is with every conceivable...
On the other hand, there are several great advantages to the Ion Chamber ... For one thing, my 440 RF/C has a low range of 1 mr/H full scale, the older 440 is...
Hi, We all (should) know that a standard digital multimeter (DMM) loads a GM power supply too much to get an accurate reading. A cheap and simple way to get a...
Q: Been looking for a calculator like this to help me calibrate some of my meters: http://www.radprocalculator.com/Gamma.aspx Probably been mentioned here many...
Some Lucas cells ( see earlier article) work by drawing the air through with a pump and monitoring for Radon (or Thoron) on a continuous basis over a long ...
21st Century Amateur Rad Lab. Had a computer failure last month so decided to just replace the main desktop with something modern, and a flat panel display....
Detector tubes do not detect Gamma rays directly very well. First the Gamma Ray must interact with an atom by one of several methods outlined in another ...
NRC has signed agreements with the following States (called Agreement States) enabling them to regulate source, byproduct, and small quantities of special...
UV LEDS are really "near UV" @ 395, 410 and 420 nm. Real UV is considered less than 370 nm. Advanced UV LEDs are @ 255, 265, 270, 280, 285, 290, 300, 310, 320,...
I thought this might be the appropriate group to post this. I place my fiestaware saucer (2.5-3mrh) on the door of the dryer when pulling static filled clothes...
The classic college physics experiment is to find out the "age" of thorium mantles by Gamma spectrometry. Although it may take 25 years for all the daughters...
Gamma Energy Response of Detector Probes. A complicated issue, let's shed some light on it and simplify. First what is energy level as applied to nuclear...
Unfortunately most all GM and scintillation detectors are "energy dependant". Basically this means the number of pulses the probe will give off depends on the...
http://www.qsl.net/k0ff/Trinity%20Atom%20Bomb%20Site%20Picture%20Tour%20by%20Geo/ Captions will be added later, but the pictures are pretty self explanatory....
What *IS* and What *IS NOT* a Geiger Counter Let's clear the air right away on this topic. Many newcomers to this fascinating hobby are introduced to their...
Mobile Rad Lab by Geo The RM-20 was selected as my mobile Geiger Counter for a few reasons. A) It was inexpensive and small. Also appears to be rugged. The...
Deadtime in Geiger Mueller Tubes >Tutorial by Geo Inside any discharge tube is a fill gas that ionizes when it encounters a charge that exceeds its breakover...
HV test meter multiplier >Project by Geo 10ea 99 Megs in series, 1/10% 990 MegOhms Goes in series with 10 Meg DVM to measure HV in Geiger Counters with...
*Counters, Scalers, Ratemeters, SCAs, MCAs etc. >Tutorial by Geo* So now we have our first Geiger Counter. We know it's a GEIGER something because it has a...
Direct detection of Alpha Decay from Radon Gas >Tutorial by Geo Radon collection is one of the few "separations" that can be legally done in the home lab, and...
Generating Metastable Isotopes of Short Half-Life in the Home Lab >Tutorial by Geo "METASTABLE" - "m", small case m, when appended to an isotope name, means...
Hi, We all (should) know that a standard digital multimeter (DMM) loads a GM power supply too much to get an accurate reading. A cheap and simple way to get a...
In 1903 Sir William Crookes discovered that Alpha radiation causes visible light flashes in a screen made from Zinc Sulfide powder. Soon he turned this...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
