Timeline for What would be the dose rate of 109 grams of uranium per day/year?
Current License: CC BY-SA 3.0
27 events
| when toggle format | what | by | license | comment | |
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| Oct 10, 2015 at 2:05 | vote | accept | Caspian | ||
| Oct 9, 2015 at 22:06 | comment | added | Caspian | Ok, I admit that math is not my strong suit, but I am trying. A 6” plate has radius of 3”. 9 π in2 = 28.27 in squared. X2 because it is glazed on both sides = 56.54in2 X 2mm as the glaze is 2mm thick from what I read = 4.45in3 Rounding up to 4.5in3, 14% of that = 0.63in3 0.63in3 = 197 grams of uranium. Last time I rounded the squared inches which came out to a more conservative estimate of 109. So, I tried. I am going to stop now, this is wearing my patience for social cooperation thin. | |
| Oct 9, 2015 at 21:34 | comment | added | WhatRoughBeast | Once again - seriously? 100 grams on a 6" plate? Please provide your calculations. chemistry.about.com/od/nuclearchemistry/fl/… suggests about 4.5 g although they don't specify plate size. | |
| Oct 9, 2015 at 21:07 | comment | added | Caspian | Edited to 109 grams. | |
| Oct 9, 2015 at 21:06 | history | edited | Caspian | CC BY-SA 3.0 |
edited body; edited title
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| Oct 9, 2015 at 20:44 | comment | added | WhatRoughBeast | First go back and redo your calculations. 780 grams of uranium? Seriously? | |
| Oct 9, 2015 at 20:30 | comment | added | Caspian | Edited question, hopefully it is more on topic with Physics. Thank you, dmckee. | |
| Oct 9, 2015 at 20:29 | history | edited | Caspian | CC BY-SA 3.0 |
Improved question to be on topic.
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| Oct 9, 2015 at 2:52 | comment | added | dmckee --- ex-moderator kitten | It won't let you delete it because the question has an accepted answer. In principle you could un-accpet nukular's answer and then delete the question, or you could just leave it. It's not closed yet and one closed question is no big deal. Even better, if you wanted you could edit the question to focus much more clearly on the issue of determining dose and perhaps the user will be more accepting. (Note that closed question can be re-opened by the same process that lets them get closed in the first place, and that questions edited after being closed are automatically submitted for review.) | |
| Oct 8, 2015 at 15:57 | comment | added | Caspian | Well, again, sorry for asking here. I would delete the question but it won't let me and I don't see a way that I can close it myself. | |
| Oct 8, 2015 at 15:47 | review | Close votes | |||
| Oct 8, 2015 at 22:09 | |||||
| Oct 8, 2015 at 15:41 | vote | accept | Caspian | ||
| Oct 9, 2015 at 20:29 | |||||
| Oct 8, 2015 at 15:29 | comment | added | John Rennie | I'm voting to close this question as off-topic because it's about health risks from radiation not physics | |
| Oct 8, 2015 at 15:28 | comment | added | Caspian | And I found this link on the decay chains, thank you for that, dmckee. theiet.org/factfiles/energy/uranium238-page.cfm?type=pdf | |
| Oct 8, 2015 at 15:26 | comment | added | Caspian | dmckee: Dosage, I definitely didn't get the plate to eat off of, which is where I think the confusion is coming from. I am interested in learning more about Nuclear Physics so I got a Geiger counter to go look for rocks and discover more about my environment. I heard about Fiesta ware sitting in thrift stores and I know that there are people who sell parts of broken plates as check sources, but if you break it you risk the glaze turning to dust. So, I bought a whole plate. The more I read the more the water seemed to mud up. I was just looking for some clarity from others who know. | |
| Oct 8, 2015 at 15:14 | answer | added | nukular | timeline score: 0 | |
| Oct 8, 2015 at 15:09 | comment | added | Caspian | Jon Custer:Not much. Alphas, no, They are stopped by the box and the CDV-700 is blind to them anyway. Betas, most likely penetrating the box. Gamma is present but at low levels compared to beta. Uranium 238 -> Thorium 234 is where the Alpha comes from. Thorium -> Protactinium 234m is where most of the beta is coming from. From what I have researched anyway. As far as this being categorized incorrectly, um, sorry? I thought that this information would be in the physics category as the question is related to radiation, so i decided to seek info from physicists. I will be more careful next time. | |
| Oct 8, 2015 at 14:54 | answer | added | Fabrice NEYRET | timeline score: 0 | |
| Oct 8, 2015 at 14:51 | comment | added | dmckee --- ex-moderator kitten | That said, look at the uranium decay chains. Most of the energy is in alphas and betas. Short penetration depths. Most of the photons are pretty low energy, too. I leave my orange salt-shaker (reads tens of counts per second at the top surface on our classroom demonstration counter) in a cardboard box on the other side of my office and don't worry about it because I'm surely getting more dose from the K-40 in the cinder-block walls. | |
| Oct 8, 2015 at 14:49 | comment | added | dmckee --- ex-moderator kitten | The field of radiation safety is one where the doctors often call on physicists for advice (calculating exposure, designing does schedules and delivery programs). I've helped one of my students secure a position as a junior radiation physicist at Mayo. Depending on how Caspian would like to slant this I think it can be on-topic (focus on the dose) or off (focus on the health effects). | |
| Oct 8, 2015 at 14:21 | comment | added | user10851 | Indeed, if you are asking for a cancer risk given the radiation you've already measured, that is definitely biology, not physics. | |
| Oct 8, 2015 at 14:19 | comment | added | Kyle Kanos | AFAIK, "dangerous" isn't something quantifiable by physicists. You could ask whether this is a reasonable value from the source given its history, or something along those lines. | |
| Oct 8, 2015 at 14:13 | comment | added | Jon Custer | Wait - you think betas and alphas are getting through the box? What does your meter read away from the box? | |
| Oct 8, 2015 at 14:11 | history | edited | Qmechanic♦ |
edited tags
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| Oct 8, 2015 at 14:10 | comment | added | RedGrittyBrick | 1) Straight Dope. 2) XKCD Radiation Chart | |
| Oct 8, 2015 at 14:06 | review | First posts | |||
| Oct 8, 2015 at 14:13 | |||||
| Oct 8, 2015 at 14:01 | history | asked | Caspian | CC BY-SA 3.0 |