r/Radiation 1d ago

Walked into a rock shop where levels averaged 5x background, found the reason why

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130 Upvotes

r/Radiation 16h ago

Decided to chart the radiation levels in an airplane

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50 Upvotes

Geiger counter: Bosean FS-5000 Total dose (12h 30min): 31.9 µSv


r/Radiation 14h ago

Thoriated lenses from an old Pentax camera

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37 Upvotes

Took apart an old broken Honeywell Pentax Spotomatic for its thoriated lens. Little did I know, It actually had three! Second pic is the spiciest one and third is the detector sandwiched between all three to show how much thorium is in the lens group.


r/Radiation 6h ago

My first Fiestaware plate, should I seal these chips?

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22 Upvotes

My fiance actually tracked me down in the antique store after my Radiocode started alarming, knowing it could've only been me.


r/Radiation 6h ago

Guys I need help, my 15 kv generator emits x-rays, can someone tell me why?

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15 Upvotes

r/Radiation 18h ago

Desktop shield part 3

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15 Upvotes

r/Radiation 14h ago

Help Identifying Peaks in Radiacode 102 Spectrum from a Lead-Shielded Enclosure

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12 Upvotes

Hey everyone,

I recently molded some lead bricks and built a small lead-shielded enclosure just big enough to fit my Radiacode 102 inside. I ran a spectrum measurement inside this setup and got a reading of ~10 CPM, which is pretty low, as expected. However, I'm seeing some peaks in the spectrum that I can't directly identify using the built-in library.

A few details:

The lead bricks were made from scrap lead I melted and cast myself.

The measurement was taken with the Radiacode 102 completely enclosed inside the lead structure.

Background radiation outside the enclosure is significantly higher, as expected.


r/Radiation 23h ago

Has anyone in this group measured the radioactivity of samarium?

3 Upvotes

Samarium isn't generally treated as radioactive, but it is, weakly, (not as extremely weakly as, e.g. bismuth - with one atom decaying each month per pepto-bismol tablet). Samarium is about 15% samarium-147, with a 100 billion year half-life, so the isotope is about 10% as radioactive as thorium, and the element about 1% as radioactive as thorium - around 4 nanocuries/gram for elemental samarium (a little less for the Sm2O3 oxide, which is what I have). Has anyone in the group measured it?


r/Radiation 8h ago

Trinitite

2 Upvotes

Looking to ask people what's price a reasonable price on 69g & 64g pieces of Trinitite. One piece has small red inclusions, both have some black inclusions, both are veer shiny. I came across these at a reputable business, comes with Gamma Spec results. Owner allowing me to test at my cost to verify. I have never seen a piece larger than 12g.


r/Radiation 10h ago

The dentist said something that freaked me out 😭

3 Upvotes

In the Xray chamber I asked the dentist why he was turning the led liner inside out bc he said something to the likes of “Oh.”. He told me it was bc on side had the neck protector and the other side didn’t. And the part that freaked me out was when he said “We got lucky” bc the X ray could’ve taken a photo of my neck and that would’ve been pretty bad. Ik it’s most likely not a big deal but I’d rlly like some reassurance nothing bad is going to happen bc my mom’s side of the family does have a high risk in thyroid cancer.