Thermoluminescence Dating in Archaeology

[@walterp8019]

Working in the Electon Microscopy field for a while and developing UV-vis-IR spectrometry systems, I have a little input on this. While developing Cathodoluminescence systems, I encountered Thermoluminescence spectra many of times. I would worry about the elemental content of the pottery as it might contain some rare earth and other elements that might change the count rate. This includes some basic elements, such as calcium, iron, nickel and so on. I have seen the opposite occure when analyzing geological samples and industrial ceramics as the thermal peak can interfere with elemental identification. Using high kV and current will cause degradation of the sample area for analysis and reduce the ability to verify results. Back in the 1990's and 2000's, we put together a system that could detect low emissions using low kV and current, so that the analysis could be more reproducible. With this we could isolate the thermal peak easily.

[@PaleoNerd]

I'm history teacher from Brazil and found your video while I was searching for images of Thermoluminescence. Keep with your nice work!

[@gawainethefirst]

I always wondered what science went into dating an archeologist...

[@kennethfalconer2513]

Thanks for this! I was trying to figure out exactly how TLD badges work for personnel who work with radiation. Your explanation totally covered the process, and why they are reusable after they've been in the heater.

[@senatusconsultumultimum7815]

Thank you for sharing this, I know nothing about archeology but this is absolutely fascinating!

[@DigItWithRaven]

I'm glad you liked it! Such a cool subject

[@mikemclaughlin2297]

amazing video! I learned so much!

[@DigItWithRaven]

I'm glad you liked it!

[@kelleymartinez1791]

You made this really easy to understand. It made perfect sense!

[@elignaciojara]

this is great! thanks you very much, I now understand this technique!

[@Phytologics]

wow, my area of expertise is elemental analysis so I kinda thought that all of the dating methods relied on isotope ratios, then I heard about this bizarre Thermoluminescence dating in a documentary about meteor strikes. that's such an interesting and strange phenomenon, it really makes me wonder who was the first person to see strange light coming from a re-heated piece of pottery. I'm going to have to find out how this was discovered... Thanks for the excellent explanation!

[@gsillevis]

I loved the Thor reference!

[@DigItWithRaven]

Haha now I need to watch the rest of the movies!

[@galaxy-vl8dr]

My teacher showed me the same video well done this is really good👍

[@Darakai]

Thank you, great explanation!

[@calebhowells1116]

The level of impurities in the lattice structure of any given sample of pottery will not necessarily be the same as any other given sample. So the amount of electrons absorbed per annual dose of radiation cannot be assumed to be the same across any two pottery samples. How is this accounted for when measuring the date by thermoluminescence?

[@ancaar1615]

By making additional measurements (regenrative doses) for each sample to see how much radiation will lead to a certain light emission. Then you can interpolate the natural dose. You also have to correct for sensitivity changes by applying a low test dose after each measurement cycle as heating and radiation will lead to a different "situation" within the crystal (more traps, less traps etc.). Don't know about the exact measurement protocol as I use Optically Stimulated Luminescence on sediments, but that's basically the idea behind it.

[@-----REDACTED-----]

Thermoluminescence as a word makes perfect sense though...it’s right on the nose 😂 Also thank you very much for your videos on the tools of the trade. Definitely helps so much with exam prep! I have taken the liberty to subscribe.

[@FaithThaiStory]

Great love your video, Greetings from Thailand

[@kaylor7947]

I had a research project on this. Thanks a million

[@nefeligeorgiou7016]

Amazing video thank you!

[@sparkless]

Thank you! This has been super helpful

[@DigItWithRaven]

Glad I could help!!

[@davivignola5895]

When we covered this in college, I was "wow, that's awesome!" I never really grokked the science behind it before, but this is really cool.

[@DigItWithRaven]

Definitely one of the coolest dating forms for sure!

[@bhavymeghwal]

great work, thanks

[@1of4Thatsthescore]

Could you use TLD on volcanic rocks ?

[@MrAchile13]

We know that the Egyptians used fire setting to quarry granite. Can we date burned granite with this method?

[@jimmycricket5366]

I don't know how this method can be deemed accurate. There is just too much that could affect the electron count in the material. Far too many unknowns. Nothing is uniform and granite itself is more radioactive than most materials around. I smacks of, "let's just get an answer". The problem with archaeology is that there is no financial penalty for being even wildly wrong, and who's going to challenge you anyway?

[@1of4Thatsthescore]

Thank you 👍

[@swapnil99119]

Do you know anyone who can do TL OSL on collaboration basis?

[@caseyvann230]

hey! that image of the heating process was cited from my college, what a funny coincidence!

[@DigItWithRaven]

Hey so cool! Small world 😀

[@sciencenerd7639]

wow, fascinating stuff

[@tetraalfa]

Great video, great presenter

[@orlinemomo]

Thank you

[@sheilatodd6588]

Great video!👍

[@DigItWithRaven]

Glad you enjoyed it!

[@classicslover]

Great Mel Gibson/William Wallace impression: "Freeeeedooom!" But...Raven? You're not a Marvel person? Hmmm. Is there even repentance for that? I had a difficult time pressing "play" on this video because I, myself, have currently developed kind of an...allergy...to dating. LOVE your explanation, nevertheless! And be forewarned: I am now determined to incrementally entice you over to the Marvel side of the universe. (You know...since you have SO much spare time.) I suggest starting small...Season 1, episode 2 of Daredevil...okay...episode 1 and 2...but just episode 2 of you only find study break time for one.

[@edgecode5]

Great presentation! And you should be a Marvel person. :)

[@1.4142]

Niche and cool

[@Crickewithidrees]

Love ❤️

[@generalknowledgehubb1559]

I love u

[@nelsoncabello2259]

Stop ranting and date!