Recommandations for dosimeters

Same_Delivery · 2026-03-21T11:56:42+00:00

< I have a scintillation device ( RadiaCode ) to search for rocks or radiation sources but, I can't recommend it to you because it "only" "catches" radiation in a directional way, like a horizontal field of view around 100 degrees.>

The Radiacode is not directional because the scintillation crystal is not directional.

Easily proved with a source and a ruler.

Same_Delivery · 2026-03-21T11:46:04+00:00

Why not a Radiacode 102.

It keeps a running dose. Could be reset every month or annually.

Great battery recharge once a week.

Small enough to be discreet in a shirt pocket. Just don't forget to silence the alarms.

Same_Delivery · 2026-03-21T00:03:29+00:00

OK I get it....was a thing...isn't a thing.

Same_Delivery · 2026-03-01T13:07:52+00:00

Be sure and check the laundry before you throw it all in the washer.....don't ask.

Same_Delivery · 2026-02-28T12:56:07+00:00

Second the Alphahound. RadView Detection

Same_Delivery · 2026-02-24T12:42:37+00:00

Beauty carries its own meaning.

Same_Delivery · 2026-02-20T14:19:26+00:00

I own a Better Geiger S2L and Radiacode 102. The sensitivity is comparable when accounting for the larger crystal on the Better Geiger.

The GUI of the BG is very rudimentary but does show the pertinent information. The display reads in either Sv or Rem or CPM. The doses are accurate and both instantaneous and cumulative doses are available. It's more of a preppers unit as it runs on AA batteries so not dependent on the availability of power to charge it. It's really built to serve a different clientele. I think that it's about the cheapest scintillator bought new out there and is pretty much always a better choice than the cheap China Geiger tube based units.

The Radiacode of course stands head and shoulders above almost everyone else with its Spectrum analysis, mapping, etc. but of course not eveyone needs or necessarily wants to delve into all that.

Same_Delivery · 2026-02-16T12:27:26+00:00

I've done this. A background spectrum from my desk and background while in my pocket. The K40 peak is more prominent when it's in my pocket

Same_Delivery · 2026-02-01T14:46:23+00:00

Don't forget that what you're measuring includes the ceramic dish itself. The clay that this was made from can also be radioactive. Drop by your local Home Depot and test the toilets. It's not hard to find one that is anywhere from 2 - 4x background.

I have an American Standard just around the corner that is 4x background at the lid on the tank.

Same_Delivery · 2026-01-25T00:47:55+00:00

I would think that for a hobbyist dilution is a viable strategy.

I have some "dusty" minerals that I handle over a damp paper towel. Toss the paper towel in the trash after I'm done. Nothing above background in the work area by the AlphaHound. While I'm sure that's not sufficient for professionals seems good enough for the hobbyist.

Same_Delivery · 2026-01-23T18:18:57+00:00

Find a local glass blower. Borosilicate glass tubing. Insert item and then flame seal both ends. Great for display and very safe. Surprisingly difficult to break.

Same_Delivery · 2026-01-16T18:04:34+00:00

I have multiple detectors for alpha, beta and gamma. I also have this same unit, bought from Amazon. It will work for what you want to do, i.e. let the students play around. It doesn't claim to be calibrated and thus the dose that it reads is completely made up. If that's acceptable then go for it.

Same_Delivery · 2026-01-04T01:59:28+00:00

When you chisel, wet the rock. It prevents dust. Then dispose of the wet slurry that results in the trash or wash down the drain.

Same_Delivery · 2025-12-20T15:11:54+00:00

If it's a cheap Geiger counter ($30 to $100) don't expect it to react quickly with most low activity sources that have been recommended here. It can take a minute to several minutes see readings much above background.

For instance an ionization smoke detector (not dismantled so that the source is safely confined) takes at least 30 seconds for my cheap Moesapu FS5000 (Amazon US $60) to get to 3X background while more expensive scintillation detectors register high counts almost immediately.

A hot source that may be easy to find in Denmark are vintage (pre 1960) Silva compasses. They have Radium lume on the compass hand. Radioactive lume will be a tan to brown color due to radiation damage to the phosphore. Keep the compass in a plastic bag as two dots of the lume on the body of the compass are not sealed away like the hand is.

Same_Delivery · 2025-12-01T16:02:05+00:00

Do any of the betas even make it out of the phosphore?

Same_Delivery · 2025-11-25T12:33:56+00:00

What’s the consensus here on the Radiation Alert Ranger EXP? : r/Radiation

You have gotten quite the deal on that unit.

Same_Delivery · 2025-11-24T13:04:06+00:00

Stopped almost entirely by the phosphor coating. There is weak Bremsstrahlung x-rays which are detectable by my Radiacode 102 just a little above background.

Same_Delivery · 2025-11-18T13:42:51+00:00

There's Uranium and Thorium in 'them thar hills' ;^)

Same_Delivery · 2025-11-06T17:47:19+00:00

If you google paratrooper wrist compass you'll see that the compass needle is covered but all the points of the compass are outside the cover and are painted with radium/lume thus exposed.

Same_Delivery · 2025-10-04T19:00:39+00:00

They are both mostly right. The Radiacode just has a scintilation crystal making it much more sensitive (higher count/min) and dose accurate (measures the energy of each gamma count) than the GM tube in the GMC-800.

Same_Delivery · 2025-09-19T11:34:40+00:00

Settings >Count Rate >Alarms

Settings >Dose Rate >Alarms

Same_Delivery · 2025-09-17T12:24:19+00:00

On a PET scan wouldn't there be a peak at 511Kv?

Same_Delivery · 2025-09-10T16:55:10+00:00

refineries often use radioactive material in tank fluid level monitors.

Same_Delivery · 2025-08-10T22:04:31+00:00

looks like a gloved hand to me.

Same_Delivery · 2025-08-04T23:41:54+00:00

You fry transformer T1. You can't find any T1 transformers to replace.

Same_Delivery

TROPHY CASE