XRayBob X-Ray Interactions with Matter

[@bobgrossman1]

OOPS I found an error at Error at 9:31 ! Photoelectric Energy Range is not 10keV to 150keV the minimum can be as low as 0.3keV. Guess the proper energy range is from the k-shell binding energy of a low atomic number atom up to 150keV. The minimum energy for a photoelectric effect is the binding energy of the k-shell electron and for low atomic number atoms, such as those found in soft tissue, the binding energy of even K-shell electrons is low (e.g., 0.3 keV for carbon).

[@anthonyboarman3833]

It sounds like you're really smart, which is very cool.

[@beccakunselman9701]

this was incredibly helpful, my classmate and i are so much more understanding of this chapter since watching your video. thank you so much

[@jonahansen]

Best clip on image formation on KZbin. Thanks!

[@patricianguyen5667]

Thank you SO much for your videos. I can't emphasize how much your videos have help me. Your videos really helped me understand so much. You're so great at explaining everything! Thank you thank you thank you!

[@cambiac]

English is my second language and for me takes a little bit longer to understand my professors. But with your videos are being helping me a lot! . Thanks!!

[@alexjank6952]

Thank you for taking time to teach us

[@mervin12dionisio25]

thanks :) i hope you can create a discussion of every lesson of bushong book.thanks

[@ruslan7]

The best explanation!!! Thank you very much!!!

[@randyhakim8791]

My thanks for the lecture. i'm gonna make a resume of the lecture for homework. so that's an auto sub for you sir. GG TY

[@riskaamilia4090]

Thank you, this video help me through the exam!

[@mr.b5534]

Amazing. Please make more.

[@yasmineabdullah2036]

I don't know who to thank you 💜

[@drnunu25]

Amazing lecture!!!

[@gregmcbroom3943]

The Photoelectric effect occurs at photon energies way below that required for Compton scattering. So your list at 0:29 should swap Photoelectric and Compton to be in the correct order of energies. Excellent presentation overall!

[@bobgrossman1]

Greg thanks for pointing out that error.

[@Thatone_Dude21]

Thank you for posting this video lecture.

[@napephaahla3516]

Coherent scattering is also referred to as elastic scattering. Well done

[@ajithkumarbs7640]

It was an excellent presentation. I have a doubt on the occurrence of multiple scattering takes place at the Compton scattering. How does the multiple scattering on Compton finally leads to photoelectric effect ? Coz as the multiple scattering takes place the wavelength of the X-rays will be keep on reducing r8, then how comes the photoelectric absorption can occur with the energy less then that of required for compton scattering.? Kindly clarify me ! Thanks in advance.

[@bobgrossman1]

These interactions are occurring in the body which means the atom that will photoelectrically absorb the x-ray photon might be atoms of Calcium or Oxygen or Carbon. These atoms have rather low K Shell binding energy levels. So a 60 kEv x-ray photon might exit the tube and enter the patient and have several Compton Scattering interactions, each reducing the energy of the x-ray photon and then eventually get photoelectrically absorbed by a Calcium atom. Hope that clarifies.

[@getahuntegafaw6150]

Great presentayion

[@SteveGames24]

Scatter Outta Compton?

[@jeffhuzzard922]

Character In the video It's great, I like it a lot $$

[@asifchoudhary1094]

Thank you so much sir video is very useful

[@lucasfeitosa_]

What happens after with an electric photon ?? Is it possible to produce bremsstrahlung inside the human body through this interaction ??

[@nja.2795]

Your Awesome, thanx a lot

[@princejosh6381]

Hi Xray Bob is there anyway I can get ur powerpoints for personal study? Thanks

[@mervin12dionisio25]

i understand your lesson than my teachers in school. hahahaha

[@asifchoudhary1094]

Radiation Hazards and protection short notes

[@giaperez8849]

Thank you !!!!!!!

[@emanalsaghier2731]

thank you, this is awesome. you should consider teaching.

[@bobgrossman1]

Thank you. I do teach.

[@emanalsaghier2731]

Ok, now I envy your students :)

[@obebwamimeschac158]

Thanks thanks thanks

[@bakerrhimi1311]

Very bad presentation

[@bakerrhimi1311]

I agree

[@lucasfeitosa_]

What happens after with an electric photon ?? Is it possible to produce bremsstrahlung inside the human body through this interaction ??