1 / 15

Radiation Primer

Radiation Primer. Gamma (  ) Radiation. Extra Proton. “Electron Capture” p + e -  n + gamma ray (  ). DO THE MATH …. 54 Mn + e -  54 Cr + . p = ___ n = ___. p = ___ n = ___. Gamma (  ) Radiation. I’m a stowaway. I think I’ll just stand here a while.

oriel
Download Presentation

Radiation Primer

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Radiation Primer

  2. Gamma () Radiation Extra Proton “Electron Capture” p + e- n + gamma ray () DO THE MATH … 54Mn + e- 54Cr +  p = ___ n = ___ p = ___ n = ___

  3. Gamma () Radiation I’m a stowaway. I think I’ll just stand here a while. Gamma rays from cobalt-90 can pass through metals, and show what’s inside — like the two stowaways in this truck. Or, multiple beams can be focused on a tumor to kill it. 60Co  60Ni + e- () + 2 

  4. Beta (b) Radiation Extra Neutron “Beta Decay” n p + e- (beta particle b) DO THE MATH … 14C  14N + e- p = ___ n = ___ p = ___ n = ___

  5. Beta (b) Radiation Soviet-era lighthouses used heat from radioactive strontium-90 to make electricity. Two hunters found a scrapped generator and slept near it for warmth. They died a couple of days later. 90Sr  90Y + e- ()

  6. Beta (b) Radiation Measure amount of beta radiation passing through material to measure thickness of material.

  7. Alpha (a) Radiation Extra Stuff “Alpha Decay” 2n + 2p 4He (alpha particle a) DO THE MATH … 226Ra  222Rn + 4He (alpha a) p = ___ n = ___ p = ___ n = ___ p = ___ n = ___

  8. Alpha (a) Radiation Cigarettes can kill you with 210Po, too. Former spy and Russian dissident Alexander Litvinenko was murdered by putting Polonium-210 in his tea. 210Po  206Pb + 4He ()

  9. Background Radiation 80% is from natural sources ! = 3.6 mSv

  10. Radon Levels Ashland 9.3 pCi/L Medina 3.6 Lorain 4.7 www.epa.gov/radon

  11. Oklo “Reactor” (Gabon, Africa) Enough uranium 2 billion years ago to allow natural nuclear fission reaction. Uranium (1) dissolved & concentrated by groundwater. Water acted like neutron target, but boiled off every 150 min. Cycle repeated for 100,000 years. Rocks now look like used nuclear fuel.

  12. STABLE Neon Isotope Half-Life JUST RIGHT !!! Too Few! Too Many!

  13. STABLE Neon Isotope Half-Life JUST RIGHT !!! What’s an unbalanced isotope gonna do? Too Few! Too Many!

  14. STABLE Neon Isotope Half-Life JUST RIGHT !!! Too big? Lose some of BOTH Too Few! Too Many! Turn some protons into neutrons Turn some neutrons into protons

More Related