Nuclear Definition and 997 Threads

I was watching an explanation (found here: youtu.be/yTkojROg-t8 ) on nuclear fission. In the video, he described the process of fission to happen one a random neutron smashes into a uranium nucleus. This causes the necleus to split into krpyton and barium, taking part of the nucleon and...

Last night I watched History channel 10-hours "Doomsday 10 Ways the World will End".. the others are far out like Gamma Ray Burst, Black Holes, Rogue Planet, Killer Asteroid, Nuclear War, etc. and I can only feel entertained but when I watched the Solar Storm part. I got alarmed. This has...

Hi, is it hard to find a good internship in Europe for a third year nuclear engineering student who is not European ? do they ask for high GPA ?

Hello Dears I am Mechanical Engineering Technology and I am thinking to get Master degree in Nuclear Engineering/ Nuclear Mechanical Engineering. So, is it possible to do that and in which university? Thank you

Hi, do large nuclear power design companies ask for high GPA/Average ? companies like terrapower Westinghouse...? Is a successful engineering career linked with high gpa/average ?

As if we don't have enough to worry about already, I hate to think where this is leading us. http://www.cnn.com/2016/12/22/politics/donald-trump-strengthen-expand-nuclear-capability/index.html (CNN)President-elect Donald Trump signaled Thursday that he will look to "strengthen and expand" the...

Hello, It seems everybody knows that iodine-131 is produced in nuclear reactors, but so far, I couldn't find any example of nuclear reactions starting with U-235 and leading to I-131...! Directly, undirectly, going through other fission products, going through beta decay... Nothing. I mean...

This is my final year at high school and i don't know which college is better for study. i love physics and chemistry especially nuclear subjects So i have lots of questions like what I'll study and the applications of it , where I'll work and which one is deeply focus on nuclear stuff...

Homework Statement A beam of ##^{50}##Ti nuclei impinged on a ##0.5 mg/cm^2## thick ##^{208}##Pb target in an experiment lasting 176 hours. During that time a total of ##3260 \; ^{257}##Rf nuclei were detected. The beam intensity was throughout the experiment constant at ##6.6\mu A##. Each...

I was reading about the new pebble bed gas-cooled reactor China is building and was looking into how the fuel design reduces the risk of meltdown. Apparently this is largely due to something called "Doppler Broadening" and this somehow affects neutron absorption. I don't see how this works and...

Are there equations that detail the stability of nuclei against beta decay? On a related point, I'm familiar with the chart that shows all the isotopes and their half-lives (with a good chunk undergoing beta decay), but I was wondering if that can be derived from first principles, just using the...

Hello everyone. I'm approaching the end of my physics graduation and must start to think about what to do next. I'm working in a project with a professor in the university about stellar sctructure and it captivated me. Now i don't know if i take the specialization in nuclear physics or...

Usually people talk about magnetic confinement schemes or some such thing for fusion reactions presumably because the pressure and temperatures would vaporize/destroy all conceived material vessels too quickly. I would like to hear someone talk about the limits of materials in this realm. So...

Homework Statement Hello, I'm asked to show the equivalence of the given Hamiltonian below which describes the interaction between an electron and a nucleus and the following Hamiltonian The Attempt at a Solution [/B] I've simply written down each Hamiltonian as a sum of four tensor...

Greetings to everybody. I'm currently in my 3rd year of pursuing a physics undergrad, and I'm considering where I might want to focus, what field I might want to enter. As the title suggests I'm seriously considering something with regards to nuclear physics. My primary interests lie in space...

I'm a BS Hons (in Physics) student. We've a course named nuclear physics where we had taken help from book named Elements of Nuclear Physics. However, it seems insufficient to (not elaborately explained) read. So would you please help me with recommendations of books which has plethora of info...

Does nuclear engineering require a lot of chemistry? Chemistry is not my strongest subject simply because I chose to skip it in high school. So I just wanted to know if it was heavily ridden with chemistry. And if so what topics do I have to look forward to. ugh...

Homework Statement Determine the energy change, delta E, in J when 500 g of 229/90 Th undergoes the following nuclear reaction: 229/90 Th --> 225/88 Ra + 4/2 He The nuclear masses in amu or g/mol are: Th-229: 229.03175; Ra-225: 225.02360; He-4: 4.00260 Homework Equations delta E = deltam(c)^2...

I'm a student at Purdue University Northwest and we recently started a Nuclear Physics program and I want to help get the news out but I don't know how. Currently I am the only student in the program, but we are trying to grow it. My professor for all things Nuclear is talking to the ANS...

I know fusion power is not economical but can a fusion reactor be used to eliminate nuclear waste (from old fission reactors)?Regards, JDM

Hello I'm a student in university, my major is nuclear engineering, energy and nuclear electric. But in my country, nuclear electric company isn't build. I'm afraid that no jobs when I graduate. Besides working in company, what is the jobs for nuclear engineer? Thank you

Im a senior in high school and I am interested in pursuing a PHd in physics. I am looking at nuclear physics but I am also considering a,I believe it is called a duel degree, in ether astrophysics, plasma physics, or theoretical physics. IM leaning towards theoretical physics myself. Can this be...

If one of the dozens of ballistic missile submarines owned by the United States would receive code to launch an intercontinental tactical nuclear warhead, would they obey without question even if the target would be a state in the United States or let's say Singapore? What protocol are...

Is it theoretically possible to stimulate a radioactive nucleus so that it decays on demand instead of randomly?Could this be used to accelerate decay of dangerous fission by-products?

[Question] So I was thinking about Physics for some time and for the sake of curiosity I've came with this problem: Let's say we have a liquid flowing into a system with infinite space. The flow is constant ( F ) The liquid decays over time with a half life ( λ ) We're looking for the Total...

good evening everybody! i'm studying these days the nuclear activity and this amazing world where an atom try to find its/her stability ! so i came across the famous radiations but then stopped by something i didn't quite understand! when an atom release a beta radiation a negative one for...

Homework Statement (a) Cobalt has only one stable isotope, 59Co. What form of radioactive decay would you expect the isotope 60Co to undergo? Give a reason for your answer. (b) The radioactive nuclei 21084Po emit alpha particles of a single energy, the product nuclei being 20682Pb. (b) (i)...

Homework Statement A control rod to limit the rate at which a nuclear reactor is working is made from boron which is sealed in a casing. A boron atom (105B) is able to capture a neutron; an atom of lithium (Li) and an alpha particle being produced in the process. As a result helium gas is...

Homework Statement I am trying to calculate the nuclear magnetic moment for Oxygen 15 but my answer differs strongly from the value quoted in literature. Homework EquationsThe Attempt at a Solution [/B] ##\mu_J = g_J \mu_N J## This isotope of Oxygen has an unpaired Neutron with ##J =...

Hi! I just keep having a hard time looking for the formula stating the relationship between half life, the initial number of unstable nuclei and the initial activity, can someone help me on that ? To be more specific, here is a problem which can be solved using that formula: "A substance has a...

Homework Statement A newspaper article stated that the NASA Galileo space probe to Jupiter 'contained 49 lb of plutonium to provide 285 watts of electricity through its radioactive thermonuclear generator (RTG)'. (Note: An RTG is a device for converting thermal energy produced by fission into...

Homework Statement A sample of iodine contains 1 atom of the radioactive isotope iodine 131 (131I) for every 5 * 107 atoms of the stable isotope iodine-127. Iodine has a proton number of 52 and the radioactive isotope decays into xenon 131 (131Xe) with the emission of a single negatively...

Hello, I am very interested in majoring in nuclear engineering. I not sure which jobs stand out to me but I've been attracted to most of the job descriptions I've looked at. The only things is from what I gather the hours are not good. Are there generally some jobs in the field with solid hours...

Homework Statement Why does PET scanner use positron emitters? 1-positrons have more penetrating power than electrons 2-positron emitting isotopes are cheap and widely available 3-the location of emission can be located better because a pair of gamma rays get emitted from the body...

Literature survey on Nuclei deformation I found theoretical calculations and prediction however I could not find experimental considerations. 1. How nuclei deformation confirmed? 2. Is it possible to consider deformation modulus constant that equivalent to Yang Modulus in mechanics? Are there...

So I'm currently a senior undergraduate nuclear engineer at a respected university and I've been considering getting my Ph.D for a while now. I'm having difficulty deciding on a specific research area, however. I'd like my research, optimally, to be applicable outside the nuclear sector as well...

Hello, I am a Junior at The Pennsylvania State University majoring in Nuclear Engineering. I currently possesses a 2.58/4.00 GPA (Not really where i wanted to be) and am trying to find an Internship somewhere in the nuclear field. I do have past experience working under civil engineers with the...

Homework Statement The nucleons in a nucleus have a net orbital angular momentum ##L = 1## and spin angular momentum ##S = \frac{1}{2}##. What are the possible values of the total nuclear spin ##J##, i.e. the total angular momentum of the nucleus, and what are the possible values of ##J_z## in...

Hi, I have recently received a guitar direct from a private seller in Japan and have noticed a metallic taste in my mouth when coming into close proximity to the instrument. I am looking for advice on whether it may be radio-active and if so the level of contamination.

Hi, everyone! I'm doing a research in gap conduction calculation models in popular nuclear fuel performance codes. I want to make a sensitive analysis in their behaviors, but unfortunately, I just have access to FRAPCON package. is there anyone who can help me to gather some of the codes...

I've been thinking... Is there any way that there could be sort of a one-time use pulse laser that uses something like a mini atomic bomb to create a super high energy laser? I found stuff about a Nuclear pumped laser and "Project Excalibur", but I wanted to ask actual people who know a lot...

Homework Statement A unknown nuclide emits four alpha particles with energies 8.54, 7.04, 6.38, and 5.10 MeV a) what are the nuclear energy levels of this nuclide b) What are the possible gamma ray energies that should be observed[/B]Homework EquationsThe Attempt at a Solution I was trying...

First, where does the STEAM get it's energy from? The only answers I'll find it the typical, silly, "e=mc2", "from the nuclear fission". Well, heat doesn't just magically GET RELEASED, it needs to be transferred somehow. My guess is that the neutrons and other radioactive materials released in...

Hello, my name is Samuel. I am a sophomore at Missouri S&T, I just switched my major from physics to Nuclear engineering. I am looking to get my degree in nuclear engineering and then work in the industry for a little bit before going to grad school and working on reactor design. I'm sorry if...

Hi, layman here. As I understand, the theoretical Heat Death of the universe would imply that the accelerating space expansion reaches an expansion rate so big that it takes bodies and eventually even fundamental particles apart, leaving them alone up to an ultimate point in which no particle...

North Korea apparently detonated a nuclear weapon - again. M5.3 Explosion - 19km ENE of Sungjibaegam, North Korea http://earthquake.usgs.gov/earthquakes/eventpage/us10006n8a#executive 2016-09-09 00:30:01 UTC 41.298°N 129.015°E 0.0 km depth...

Homework Statement The textbook on nuclear physics I am going through says: "The atomic weight M of a nuclide of mass number A can be found in the mass difference, ##\Delta##, given in column 3. The quantity ##\Delta = M-A## gives the difference between the nuclides atomic weight and its...

Hi, what are the most important courses i am going to take ? like the bases of a nuclear engineering. Are they radiation/ nuclear theory and thermal hydraulics ?

I am currently in a high school IB student with Physics, Chemistry and Maths as HL. I want to take up a career in nuclear engineering but not as a researcher instead I want to solve real life problems and work in a power plant or a shipyard which makes nuclear-powered submarines and ships. I...

I'm having trouble understand a passage in our book. The author claims that the reaction ##^2H+^2H \to ^4He + \gamma## is unlikely since the ##Q## value is large (##23.8## MeV) which happens to be greater than both the neutron and proton separation energies. This seem very counter intuitive...