Timeline for How Does Lead Block Radiation
Current License: CC BY-SA 3.0
6 events
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| Aug 4, 2014 at 15:58 | comment | added | kd88 | Im not sure if you're answer is completely accurate either - the nuclei are shielded by an electron cloud of equal charge to the nucleus (Z) so photons interact less strongly with the nucleus by a factor of 1/r compared the orbiting electrons. The photo-electric interaction is dominated by the density of the material (ie the density of electrons), not the proton number. In fact, in my answer I don't mention any probabilities or cross-sections. Furthermore I don't even refer to any specific particles, opting instead to keep the answer general. | |
| Aug 3, 2014 at 20:58 | comment | added | Floris | High Z means there is a high probability of photo-electric interaction for gamma rays: in that interaction, the incident photon is completely absorbed, not scattered. On the other hand, charged particles (alpha, beta, ions) get stopped over much smaller distances than gammas - so gammas (uncharged) and neutrons are the ones to worry about in a blast. Your answer seems incomplete (missing neutrons) and even inaccurate (the scatter cross section per unit mass is smaller for high Z materials - see Rutherford scatter formula ) | |
| Jan 19, 2014 at 10:42 | history | edited | kd88 | CC BY-SA 3.0 |
Following the last edit it also makes more sense to remove the brackets from point 1.
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| Jan 19, 2014 at 4:29 | history | edited | Waffle's Crazy Peanut | CC BY-SA 3.0 |
deleted 7 characters in body
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| Jan 14, 2014 at 13:07 | vote | accept | Joe Hilton | ||
| Jan 14, 2014 at 13:05 | history | answered | kd88 | CC BY-SA 3.0 |