Proton Definition and 813 Threads

Homework Statement A proton is initially located at the origin of some coordinate system (at rest), when a time-dependent force, $$F(t)=F_0\sin{(\omega t)},$$ is applied to it, where ##F_0## and ##\omega## are constants. a) Find the velocity and displacement of the proton as functions of...

Homework Statement Which, of an electron and a proton (of a few Mev), is more likely to penetrate further into matter if they both have: a) The same energy b) The same speed Homework Equations Bethe-Bloch formula. Total stopping power = collision loss + radiation loss (de/dx)t = (de/dx)c +...

Homework Statement How to calculate the Coulomb barrier between a proton and a lithium nucleus. The variable is r (interaction radius). The known data is Z1, Z2, k (Coulomb constant), and e (elementary charge). Homework Equations The equation is UCoul = kZ1Z2e2/r The Attempt at a Solution I...

Homework Statement Homework EquationsThe Attempt at a Solution [/B]Assuming that the relation ## v = \omega r ## is valid in relativistic calculation. As the speed is greater for higher kinetic energy, ## \omega_2 ## is greater. This is shown by only (d). So, I think (d) should...

How far ahead are we in Grand Unified Theory? Are we still searching for proton decay?

Homework Statement A proton beam is going from north to south and an electron beam is going from south to north, so in which direction is the electron beam deflected Homework EquationsThe Attempt at a Solution . [/B] I thought an electron...

new scientist latest issue covers this paper SU(5) Unification without Proton Decay Bartosz Fornal, Benjamin Grinstein (Submitted on 26 Jun 2017 (v1), last revised 13 Nov 2017 (this version, v2)) We construct a four-dimensional SU(5) grand unified theory in which the proton is stable. The...

QUESTION: I read in book that in beta + decay proton decays to neutron But i can't understand how it is possible if proton mass is less than neutron mass.I read on net but it says 'quarks' and 'd u p' things which i don't study about currently. Also why it only happen inside nucleus?What...

Homework Statement The current limit on the proton’s lifetime is determined by observing a large body of water for a long time and noticing that no one of the hydrogen nuclei in H2O have decayed. Assuming that the experiment making this measurement has been going on for 10 years, how many tons...

Hello. I usually heard about electron degeneracy pressure and neutron degeneracy pressure. But I´ve never heard about a proton degeneracy pressure. Why is this?

p\bar{p} pair is a CP eigenstate? As p and \bar{p} are fermions (the pair is assumed to be at S-state), the pair seems to be C's eigenstate with eigenvalue of -1. As they have opposite intrinsic parity, the pair state seems to be P's eigenstate with eigenvalue -1. Then isn't it CP eigenstate...

Homework Statement A parallel-plate capacitor is charged to 4850 V. A proton is fired into the center of the capacitor at a speed of v0=2.81 * 10^5 m/s. The proton is deflected while inside the capacitor, and the plates are long enough that the proton will hit one of them before emerging from...

In what condition does a photon hit a proton? What happens to the energy of the photon in that case? Does proton emit another photon and goes down to the initial energy state?

A nucleon that consists entirely of two or more protons, would be accelerated evenly, as each proton would see the same force (barring any collisions or other extraneous events.) Each should experience the same force of repulsion or attraction that is causing them to accelerate, so they should...

Why are there no gold companies that produce gold by removing a proton from mercury? Is it because mercury is expensive or lack of facilities to remove the proton. Given a lot of budget (like billions).. what would it take to remove a proton from mercury to produce gold?

An assumption in deducing the Bethe equation is that the momentum transfer is perpendicular to the direction of the particle. ALSO In Allison & Cobb (1980), just after eq. 28, they state that the first two terms of the Photoabsorption Ionization model arise from the magnetic vector potential...

Trying to figure out how many particles would bombard an astronaut during a solar proton event. Given that the most possible is around 43,000 particle flux units (pfu) according to NASA. First calculating steradians, assuming a person is 1m^2, 1/(1E9)^2=1E-18. My calculation yields (43000...

is there a reason that Deep Underground Neutrino Experiment which uses 70, 000 tons of liquid Argon doesn't also do double duty work as a proton decay experiment? Argon has plenty of protons and 70, 0000 tons is a lot of material to work with it costs several billion dollars so why not use...

Firstly sorry for my english . I don't know how i should search this question this is why i am asking here. while i am thinking about charges,i think consider a positive charge. And put an electron very far from it. Is there any posiblity for electron don't affect from positive charge

Direct gravitational measurements of subatomic particles seems impossible. Has it been done/tried? The mass of the proton as I know it is always "indirectly" determined by (for example) bending a beam of charged protons in a magnetic field.

In the proton chain, a deuteron and proton fuse to make a nucleus of helium 3, releasing 5.493 MeV by E=mc^2. To have the same total momentum before and after fusion, at least two particles must be emitted, right? That way they can "cancel out" some momentum by having roughly opposite...

Hi, I have been doing my own personal fusion research for almost a year now and I recently began looking into the various fusion fuel cycles other than D-T and D-D. The cycle that I'm interested in is P-P fusion, I'm aware that this method is inefficient for energy production, however, it seems...

When two deuterons fuse, I understand they form an alpha particle in an excited state. Based on mass differences the fusion releases 23.85MeV, which is enough to eject a proton (19.81MeV) or a neutron (20.58MeV) from the alpha particle. It seems to prefer neutron emission, as this fusion is used...

Homework Statement [/B] A proton is accelerated from rest at the positive plate of two charged parallel plates with a potential difference of 2000 v. After leaving the plates through a small hole in the negative plate, it enters a uniform magnetic field of 0.50 T in a direction perpendicular to...

This is one of those questions that probably has a very simple answer, but I can't find it anywhere, and as much as I think about it, the more confused I get. Can diastererotopic protons have different number of split peaks in their overall signal like on a CH2R group, for example, one proton...

To make antimatter you have to change the charge of proton and electron. So how do you do it

Alright, I have a basic understanding about anti hydrogen - hydrogen annihilation reaction. But what exactly happens if an anti hydrogen atom stumbles into anything else like a deuterium, tritium of helium atom? From my limited understanding, antimatter can only react with its anti-particle...

Homework Statement In a proton linear accelerator, protons are accelerated to have a kinetic energy of 530 MeV. What is the speed of these protons? (The rest mass of a proton is 1.67 × 10-27 kg.) Homework Equations E0=m0c^2 E=E0/√1-(v^2)/(c^2) E = KE + E0 The Attempt at a Solution Recognize...

Homework Statement If a proton with a kinetic energy of 6 MeV is traveling in a particle accelerator in a circular orbit of radius 0.75m, what fraction of its energy does it radiate per second? m = 1.67 * 10^-27 epsilon_0 = 8.854 * 10^-12 c = 3 * 10^8 Homework Equations dE/dt = (q^2 a^2) /...

When protons or nuclei of light elements like Helium passes through gas, it ionises the molecules on it path. But that's not the case when proton or nuclei of light elements pass through solid objects like metal. What's the reason behind that?

Hello everyone! I would like to ask you if anyone can help me solving my Problem with mcnpx. I created a file with a watertank, a nozzle and a slit blend on the surface. I also inserted a protonbeam and would like to plot the dose and fluence for examplte with Moritz. But when I execute the...

Homework Statement What is the kinetic energy given to the proton in the decay of a neutron when: a) The electron has negligibly small kinetic energy b) The neutrino has negligibly small kinetic energy Homework Equations Q = (mn - mp - me - mv ) c2 = .782MeV Where T is kinetic energy, and...

Homework Statement Homework Equations potential energy = -kQq/r potenial = kQ/rThe Attempt at a Solution i am not quite sure how does l play a part in this experiment since it is far away l is insignificant and the only initial energy is kinetic energy and final is kinetic and electric...

Homework Statement A proton is released from rest at the positive plate of a parallel-plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 51000 m/s . What will be the final speed of an electron released from rest at the negative plate? Homework Equations...

Homework Statement In the figure, a proton, mass 1.67×10^−27 kg, is projected horizontally midway between two parallel plates that are separated by 0.20cm, with an electrical field with magnitude 7.8×10^5N/C between the plates. If the plates are 5.40cm long, find the minimum speed of the proton...

I am wondering if anyone has determined by experiment or calculation at what rate or even better what frequency the quarks move around at inside a neutron and proton? Do neutrons or protons vibrate at a specific frequency.

Hello everyone ! I wanted to ask you if anyone ever encountered problems with proton transport using MCNP. In particular, the production of electrons when protons interact with matter. I have been trying to figure it out modifying the different physics cards (phys, lca, ...) with no result...

Although it is definitely not simple, there are many reasons to consider that baryon number can be violated, for example: - while baryogenesis there was created more matter than antimatter, - hypothetical Hawking radiation can finally turn any matter (mainly baryons) into massless radiation...

Homework Statement A proton is at the origin and an electron is at the point x = 0.36 nm , y = 0.34 nm. Find the x- and y-components of the electric force on the proton. Homework Equations E = kQ/r2 The Attempt at a Solution So I found that E = 9.38 * 10-28, but my problem is that I do not...

Today I was doing some reading and I came across this topic. If we have a stationary hydrogen atom with a single electron in orbit around the nucleus and want to calculate the kinetic energy of the electron we would take the following approach. 1) Using Newton's second law: F = ma ⇒ FE = mac...

In his book https://www.amazon.com/dp/0385477058/?tag=pfamazon01-20, Michio Kaku is discussing hydrogen fusion and states that, "the protons in hydrogen weigh more than the protons in helium". Is this correct? I understand that atoms and nuclei will weigh different amounts, but I thought a...

Search for Proton Decay via p→e+π0 and p→μ+π0 in 0.31 megaton⋅years exposure of the Super-Kamiokande Water Cherenkov Detector M. Miura (The Super-Kamiokande Collaboration) (Submitted on 12 Oct 2016) We have searched for proton decay via p→e+π0 and p→μ+π0 using Super-Kamiokande data from April...

The energy associated with the mass of a free proton in the center of momentum frame where the proton’s momentum is zero is 938.272 (with more decimals). What is the rest energy of a single proton inside a Uranium atom? (It could be any other radioactive or fissionable element but I took...

Homework Statement an alpha particle with a charge of 2e is fixed at the origin. a proton is aimed at the alpha particle and shot from a distance of 2.00 m at a speed of 3.46x10^6 m/s. How close will the proton come to the alpha particle before coming to a stop? Homework Equations Please help...

Okay ... some "simple" questions (I think): If a single baryonic proton magically appears in a pure vacuum container (which is otherwise completely empty), can that proton be considered a positive Hydrogen ion? Or must a Hydrogen atom lose an electron first (so we just end up with a single...

Homework Statement A 2 GeV electron is incident on proton (m_p * C^2 = 0.938 GeV) target at rest. Calculate the invariant mass of the electron-proton pair in the Center of Mass(CM) frame. Neglect the mass of electron which is much less than the proton mass.Homework Equations M = [P1 + P2)][/2]...

If I look at the lower limits on the proton decay lifetime \tau set by, say, Super-Kamiokande, I'll see different lower limits depending on what the proton could decay into, eg. \tau_{min}(p \rightarrow K^{+} \overline{\nu}) < \tau_{min}(p \rightarrow \mu^{+} \pi^{0}) < \tau_{min}(p \rightarrow...

Homework Statement A proton is accelerated to an energy 5Mev in a cyclotron with AC pd of 1KV and the frequency of 8MHz applied to dees. Calculate the number of times proton would have to pass the dees to reach the energy 5MeV? Homework Equations F=BQV=MV^2/r The Attempt at a Solution...

Homework Statement So my teacher set us half term homework and one of the questions was state the relative size of a proton a neutron and an electron Homework Equations Not sure about equations The Attempt at a Solution Im a bit confused because everyone in my class got Proton: 1 Neutron: 1...

Homework Statement For a model of a proton's charge distribution, : [/B] I have to find the constant of normalisation for rho. Homework EquationsThe Attempt at a Solution [/B] I wrote p(r)=p_0 * (e^-r/R)/r I then wrote it as p_0^2 * integral from -infinity to +infinity of (e^-(r/)^2)/r^2 =...