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Particles released from radioactive material? Please help?

Particles released from radioactive material? Please help? Topic: Alpha homework
June 25, 2019 / By Courtney
Question: Science homework question: Identify and describe three typed of particles that are released from radioactive material. This is for my science homework. I dont get it and I cant find the answer! Please help me!
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Best Answers: Particles released from radioactive material? Please help?

Betony Betony | 4 days ago
Alpha decay releases alpha particles. These are the nuclei of Helium-2 atoms - two protons, two neutrons. Beta decay comes in two flavors, which release either positive or negative electrons. Gamma decay releases high-energy photons. Alpha and Beta decay is almost always followed by one or more Gamma decays.
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Betony Originally Answered: Is Hiroshima and Nagasaki still radioactive?
The radiation itself was momentary however the neutron burst would've activated and debris into their radioactive isotopes with varying half lifes. Some of these isotopes are particularly dangerous as they are variations of elements our body naturally uses so the isotopes are brought into close proximity with our DNA causing damage. This is why iodine tablets were part of the "survival kit", by being saturated with known iodine, you would not absorb the radioactive iodine and it would not come into close enough proximity to harm you. Most of the other elements are easily filtered out and kept at a safe distance with simple barriers and air gaps. Iodine-131 has a half life of 8 days so it's only a problem for a few months at the most. Other isotopes like Thorium-232 have a half life of 14 billion years but fortunately these heavier elements are not the majority of the radioactive fallout, remember, the heavier elements must be in the debris in order to be activated into isotopes by the neutron burst and these elements only exist in trace amounts to begin with. There will always be residual radioactivity but the majority drops off quickly after the event. Yes, both Hiroshima and Nagasaki are still radioactive but no, it's not dangerous to be a tourist there as the bioavailable isotopes had very short half lives. It's often believed that the bombs were air detonated to maximize the area affected but that was not the case. An airburst minimizes the amount of debris drawn into the fireball and hence minimizes the radioactive fallout. Remember, they were anticipating putting soldiers at ground zero within days of atomic blasts. Note, the legs of your kitchen table are probably radioactive too. Ever since X-ray machines and smoke detectors have been scrapped, various radioactive materials have made it's way into the recycled metal to the point where virtually all refined metals are now radioactive. To make an accurate and sensitive geiger counter now requires salvaging metal from a WWII shipwreck.
Betony Originally Answered: Is Hiroshima and Nagasaki still radioactive?
This Site Might Help You. RE: Is Hiroshima and Nagasaki still radioactive? I heard nuclear waste has a half life of 1000 years or something like that. So does that mean those cities are radioactive.

Agnes Agnes
Well the three types have names that are not easy to connect to what they really are. Alpha particles. Beta particles. Neutrons. When they were discovered nobody had any idea what they really were. Alpha particles are helium atoms that are moving with high speed. They have an energy associated with them. This energy is usually expressed in electron volts. Alphas have around 1 million electron volts of energy so they are moving pretty fast. In a helium balloon the speed of the gases is closer to a few electron volts. But since helium is a big atom it bangs into things and loses its energy pretty fast. So even a piece of paper can protect you from Alphas. Betas are just little old electrons. They can have several million electron volts of energy so they are super fast. But they can be stopped by paper or plastic as well. Neutrons are the neutral particles inside the atomic nucleus. They can have several million electron volts (MeV) of energy which makes them fast neutrons. They dont interact well with matter because they are neutrally charged. But they will lose their energy if they collide with a proton. So parrafin wax that has a lot of hydrogen in it is good at slowing them down. The neutron itself doesnt last long only about 3 days then it ejects an electron (beta particle) and becomes a proton. It has a half life of 3 days. This means that if you have a hundred neutrons in a block of wax half of them will decay to protons by ejecting an electron. So only 50 will remain. After 3 more days there will be 25 left and so on. I hope this made it clearer for you.
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Timmy Timmy
α β γ "particles" were the first discovered. the alpha (α) particle is actual a helium nucleus, 2 protons and 2 neutrons. the beta (β) particle is actual an electron the gamma (γ) particle is actual an energetic electromagnetic burst of radiation, or an X-ray. .
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Timmy Originally Answered: What are some radioactive waste disposal policies in the U.S?
You might want to look into "molten salt" reactors which offer much safer means of generating electricty than water-cooled reactors and disposing of existing stockpiles of spent nuclear fuel. http://home.earthlink.net/~bhoglund/what... "The notable features of this reactor are: Meltdown proof Does not produce weapons grade plutonium Has inherent non-proliferation features Thousands of years of energy Simplified fuel cycle (no fuel elements nor reprocessing required) Its wastes are simpler and less toxic than current nuclear wastes Only hundreds of years of storage versus thousands for the current wastes Can completely destroy military plutonium Can burn the existing wastes (spent fuel)! Higher thermal efficiencies (operates at a "Red Heat"; ~700° C [1,260° F])" Main link......... http://home.earthlink.net/~bhoglund/ Another process being considered is 'plasma-gasification" which employs a method of using intense heat to break down wastes including nuclear into their primary elements....converting that into electricity and little residual waste which would be non-radioactive. There are some problems with the metallurgy of existing designs though. http://www.plasmagasification.com/ http://en.wikipedia.org/wiki/Plasma_arc_gasification

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