Nuclear physics is the study of the composition, behavior and interaction of atomic nuclei and their constituent parts.

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Nuclear to Electricity Energy Conversion

Currently nuclear power generates heat, which heats water into steam that turns conventional turbines. The energy conversion is as follows: photonic->heat->kinetic->electric This would result in low ...
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Cause of radioactivity

If Uranium-238 is hit by a neutron, it splits into different parts. My question is (a) Why throwing a neutron will destroy the equilibrium? Rather, should it not help maintain it? (As neutron is ...
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Arrangement of Nucleons due to Strong Force

I was reading up on the fundamental forces of nature and I was wondering about the arrangements of nucleons due to the strong force. Considering electromagnetic repulsion, having 2 protons "bonding" ...
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Faraday Cage for radiations from Uranium

Is it possible to build Faraday Cage like structure for Gamma Radiations or Beta radiations, so that a person inside that cage or sphere so that inside person remain protected from nuclear explosion. ...
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Do neutrons in an atomic nucleus exert strong force on each other?

If they do, then why do we never see clumps of neutrons assembled into "atoms" without protons? Or are neurtons mutually repelled by the strong force?
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Can there be a two-neutron bound state? [duplicate]

Is is possible for two neutrons to be in a bound state, assuming that they only interact gravitationally?
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31 views

Solve question with $E=mc^{2}$ [closed]

In the sun, energy is derived from the fusion of hydrogen into helium via the proton-proton chain. The reaction proceeds as follows: ${}^{1}$H$+{}^{1}$H$\to {}^{2}$H$+e^{+}$ ${}^{2}$H$+{}^{1}$H$\to ...
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Could we use nuclear bombs to generate electricity? [on hold]

it seems the biggest problem with fusion power is confinement. on the other hand, we developed a fusion bomb in just a few years. i was wondering if it could be economically viable to use nuclear ...
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Does nuclear fusion of light nuclei occur in fire or boiling water?

At the temperature range of ordinary fire or maybe even ordinary boiling water, is the Coulomb potential between light atomic nuclei occasionally overcome to give way to fusion? Basically, how are ...
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Collision with a stationary Hydrogen atom [closed]

Can some explain me what happens when an electron or neutron collides with stationary Hydrogen atom? What are conditions for elastic and inelastic condition? For example, how to tackle following ...
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32 views

D2O distribution in water [duplicate]

I just learned that about 1/1000 of hydrogen is deuterium. Does that mean 1/1000 of water is D2O, which is heavier and sinks to the bottom in a glass of water? And consequently is there a layer of D2O ...
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Number of particles decayed after four half-lives [closed]

Statement of the Problem: A radioactive nuclide decays to a stable daughter nuclide. Initially, the sample consists entirely of atoms of the radioactive nuclide. What fraction of the sample ...
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Is there any experimental evidence to distinguish the total gravitational force exerted by the two proton and a helium nucleus?

I know that the sum of the mass of the two proton is greater than the mass of a helium nucleus (two proton). As the mass different is transformed into energy by the Einstein mass energy-equivalence. ...
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Why positron emission is unlikely to occur for nuclei with an excess of neutrons?

Is it because a neutron decays into a proton and electron rather than a positron. Which type of nucleus emits positron and which emits electrons . Is it something to do with beta plus and beta minus ...
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Free electron Gas shortcomings

I am studying surface states and the Rashba effect. A common model I keep coming across is to implement the free electron model. In this model we get the spin orbit interaction Hamiltonian by ...
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Binding energy per nucleon in radioisotopes of hydrogen

I understand that greater binding energy per nucleon implies a more stable atom and atoms undergo nuclear fusion and fission to attain higher binding energy per nucleon. The binding energy per nucleon ...
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What is so special about iron?

I remember reading something about how iron was a highly stable element. Ever since then, I have looked at iron fry pans with new-found respect. However, in a recent discussion I was unable to ...
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Nuclear Fission and Fusion [duplicate]

I've read several other answers on here, but I still don't understand. Why do both fission and fusion release energy? I know the masses drop, but then why do the masses drop on both? Fusion is taking ...
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Why is the nucleus of an Iron atom so stable?

Lighter nuclei liberate energy when undergoing fusion, heavier nuclei when undergoing fission. What is it about the nucleus of an Iron atom that makes it so stable? Alternatively: Iron has the ...
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Why only light nuclei are able to undergo nuclear fusion not heavy nuclei?

Is it because of the binding energy or the binding energy per nuclei . I am having trouble with this whole binding energy and nuclear fusion concept.
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Is there any material that can survive a nuke? [closed]

Is there a material known to man that I can tape to a Tsar-Bomba-yield nuclear warhead and find kilometers away after detonation? This question is quite similar but a nuclear explosion is quite ...
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Should I see evidence of neutron induced gammas on a background spectrum?

If I am looking at a background gamma spectrum taken from a neutron spallation source whilst the beam was off (IE in a shutdown period), should I expect to see emissions coming from neutron induced ...
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What stabilizes neutrons against beta decay in a neutron star?

Free neutrons are known to undergo beta decay with a half-life of slightly above 10 minutes. Binding with other nucleons stabilizes the neutrons in an atomic nucleus, but only if the fraction of ...
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$SU(3)$ Tensor Methods in a Tetraquark

I am trying to understand the Georgi chapter of tensor methods in $SU(3)$ representations, and I don't know how to resolve the tensor product of 2 matrices in a 2 heavy quark + 2 light antiquark ...
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Does gamma radiation create radioactive people?

I've read that the materials become radioactive. I'm writing a story where an unfortunate person has been in the vicinity of a large amount of gamma radiation. They've absorbed 6-8 Gray. Would the ...
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Why is it necessary to enrich Uranium and Plutonium before they can be used in nuclear warheads?

The World Nuclear Association(WNA) states: Weapons-grade uranium is highly enriched, to over 90% U-235 (the fissile isotope).Weapons-grade plutonium has over 93% Pu-239 However, what WNA or ...
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Find the Energy release in this Nuclear Reaction (Fission)

Plutonium undergoes nuclear fission according to the equation below: The value of $x=3$. The question is to estimate the energy released in this reaction. I know the Binding Energy per nucleon ...
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Spherical ground state of nucleus

If a nucleus has spin-parity 0$^+$ in its ground state (even-even nucleus), does this necessarily mean that the ground state is a spherical one? Or does this apply only to closed shell nuclei? E.g. ...
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what is the analog of electronics for quarks or protons?

Is there an equivalent field for quarks or for protons as there is electronics for electrons where you can build engineer and mess around with things? May be even hack ?
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Why don't all the gluon's get converted into energy in an uranium atom undergoing fission?

I have following questions and arguments. why do only gluons get converted into energy in an uranium atom undergoing fission? why don't all the gluons get converted into energy? which conditions ...
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Energy Released in a Fission Reaction

I've been told the following is incorrect, but I can't really see how. Consider the fission event described by the equation $$ \rm ^{235}U+n\rightarrow{}^{93}Rb+{}^{140}Cs+3n $$ The energy released ...
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Mass-energy conversion mechanism in supernovas

Fusion of nuclei inside stars switches from exothermic to endothermic for Iron and elements heavier than Iron. Supernovas not only achieve fusion of transuranides (albeit in trace relative ...
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How does zinc affect fast neutrons?

How does metallic zinc interact with nuclear fission? Is it transparent for fast neutrons, or does it interact as a reflector (tamper), absorber, or moderator, or some other way yet? I'm asking it ...
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Thermionic emission

I have a pretty basic question regarding the beam of electrons as a result of thermionic emission. In an electron gun, the emitted electrons from the cathode become incident at a point on the other ...
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What would be the minimum fissile material needed to start fusion within a pulse unit? [closed]

I am trying to calculate the weight of the pulse unit and composition and the approximate fallout, for a ground launch in regards to Project Orion`s nuclear pulse propulsion for a 0.03 kiloton and ...
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How to calculate kinetic energy of emitted particle using Q-value?

Suppose a nucleus of given mass number, initially at rest emits an $\alpha$-particle. How can I calculate kinetic energy of the $\alpha$-particle using no other data except the $Q$-value of the ...
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Can we use a particle accelerator to create elements?

i'm a student of 11th grade. i studied about working of particle accelerators, cyclotrons in particular in a chapter of electromagnetism. i also read that the whole periodic table after element number ...
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Control rods in RBMK - what is the difference between control rods which are inserted from above or below?

So, in Wikipedia it says the following: "Most of the reactor control rods are inserted from above; 24 shortened rods are inserted from below and are used to augment the axial power distribution ...
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Do nuclear particles react to heat? [closed]

I would like to ask if the nuclear and sub nuclear particles react to heat energy supplied to them. For example the quark triads in protons and neutrons?
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Why do the masses of decay products affect the branching ratio?

Consider a particle $P$ of mass $100m$ (where $m$ is some unit). It can decay into either of two particle-antiparticle pairs: $P\to P_1\bar{P}_1$ with branching ratio $BR_1$, where $P_1$ has mass ...
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Neutron population growth in a reactor

In nuclear reactors physics, the effective constant $k_{eff}$ is defined as $$k_\text{eff} \equiv {\text{number of neutrons in one generation}\over \text{number of neutrons in the preceding ...
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Why are there photographs of nuclear tests?

I was looking at old photographs of the nuclear tests on the bikini atoll. It dawned on me that you don't want to run film through airport x-rays, as it exposes the film. I've been told that a ...
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Does the rest mass energy include the potential energy of the particle?

The potential energy (as far as I have studied - that is, mainly classical physics) depends on the reference level, since its absolute value cannot be calculated. It can therefore be negative as well. ...
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Help! An 8 year old asked me how to build a nuclear power plant [closed]

I would really like to give an explanation similar to this one. Here's my current recipe: (i) Mine uranium, for example take a rock from here (picture of uranium mine in Kazakhstan). (ii) Put the ...
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1answer
872 views

Why don't X-rays penetrate the bone?

My brother asked the simplest question ever: why do X-rays not penetrate the bone? I know it is something to do with the compact molecular structure of bone. What I really need to know is, what is ...
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What is radiative width?

I am trying to understand gamma radiation and trying to figure out how to calculate radiative width. Is the radiative width how far the atom can be from another one and the probability of it then ...
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Quadrupole moment of 3- state in 208Pb?

$^{208}$Pb is a spherical nucleus, so its transition to the first 3$^-$ state is an octupole vibration. Why does this state then have an associated quadrupole moment, as mentioned by several authors? ...
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22 views

How much power can nuclear power plants produce? [closed]

I looked at the power plants with the highest capacity and hydroelectric plants seem to dominate the list. Surely nuclear plants could be far more powerful? I assume they are limited because of ...