Slides
... Kinematical region for energy transfers between ~100 MeV to ~1 TeV scale covered for neutrinos or from quasielastic to DIS processes. Still a lot of room for improvements, developments in lepton-nucleus interaction and high energy nuclear physics (see e.g. NuInt workshops) C++ code is being constant ...
... Kinematical region for energy transfers between ~100 MeV to ~1 TeV scale covered for neutrinos or from quasielastic to DIS processes. Still a lot of room for improvements, developments in lepton-nucleus interaction and high energy nuclear physics (see e.g. NuInt workshops) C++ code is being constant ...
Radioactivity Unit - hrsbstaff.ednet.ns.ca
... higher energy metastable (“sort-of-stable”) state, from which they decay some time later. During the decay, they emit photons of certain smaller frequencies, which we can then see, and the atoms return to their lower-energy stable state. This makes them glow in the dark. There are 3 types of radiati ...
... higher energy metastable (“sort-of-stable”) state, from which they decay some time later. During the decay, they emit photons of certain smaller frequencies, which we can then see, and the atoms return to their lower-energy stable state. This makes them glow in the dark. There are 3 types of radiati ...
4.3 distinguishing among atoms
... 4.3 Distinguishing Among Atoms Review: Protons, neutrons and electrons are the sub particles of the atom Neutrons and protons are more massive than electron (determine the mass of atom) ...
... 4.3 Distinguishing Among Atoms Review: Protons, neutrons and electrons are the sub particles of the atom Neutrons and protons are more massive than electron (determine the mass of atom) ...
Physics – Chp. 6 – Homework p. 136
... will be the force pushing down on the surface, so the force the 75 kg mass “feels” is the equal but opposite force pushing back up from the surface (Normal force). If the elevator was accelerating up, that would cause more force to be felt on the 75 kg mass. But in this case, the elevator is moving ...
... will be the force pushing down on the surface, so the force the 75 kg mass “feels” is the equal but opposite force pushing back up from the surface (Normal force). If the elevator was accelerating up, that would cause more force to be felt on the 75 kg mass. But in this case, the elevator is moving ...
Helical Particle Waves
... Notice how the two negative electrons are precisely aligned with the two positive protons. This configuration makes both the nucleus and the electrons spin and circulate at the same angular velocity to maximize the rate of photon interchange between them called the Electromagnetic Field. The reason ...
... Notice how the two negative electrons are precisely aligned with the two positive protons. This configuration makes both the nucleus and the electrons spin and circulate at the same angular velocity to maximize the rate of photon interchange between them called the Electromagnetic Field. The reason ...
Fundamental Forces
... • A gauge symmetry principle joins the weak and EM forces into a single electroweak force. • The symmetry group is SU (2)L × U (1)Y , contains U (1)em. • Most of this symmetry is “hidden” at low energies. Only the U (1)em subgroup of EM remains unhidden. • Hiding the symmetry means: ...
... • A gauge symmetry principle joins the weak and EM forces into a single electroweak force. • The symmetry group is SU (2)L × U (1)Y , contains U (1)em. • Most of this symmetry is “hidden” at low energies. Only the U (1)em subgroup of EM remains unhidden. • Hiding the symmetry means: ...
The periodic table 23 11
... We can use these numbers to work out the number of each sub-atomic particle. The atomic number was once known as the ‘proton number’ and this tells us the number of protons in one atom. We assume that there is the same number of electrons as protons in an atom. This is because their negative charge ...
... We can use these numbers to work out the number of each sub-atomic particle. The atomic number was once known as the ‘proton number’ and this tells us the number of protons in one atom. We assume that there is the same number of electrons as protons in an atom. This is because their negative charge ...
1 PHYS:1200 LECTURE 35 — ATOMIC AND NUCLEAR PHYSICS
... 35‐2 The Nuclear Force.—The nucleus contains positively charged protons contained in a very small volume. Obviously, since the protons experience a repulsive electric force, some other attractive force must also be present to hold the nucleus together. This force is called the nucl ...
... 35‐2 The Nuclear Force.—The nucleus contains positively charged protons contained in a very small volume. Obviously, since the protons experience a repulsive electric force, some other attractive force must also be present to hold the nucleus together. This force is called the nucl ...
Particle physics
... Three families • There are 3 families of fundamental particles • Why only 3? • And why we just see one of them in the real world? ...
... Three families • There are 3 families of fundamental particles • Why only 3? • And why we just see one of them in the real world? ...
electrostatics
... 7. Why are metals good conductors of electricity? The outer electrons in metals are very loosely bound (not much energy is required for them to leave their atom), so the electrons flow very easily through the lattice of metal atoms when an electric field is applied causing them to be repelled from t ...
... 7. Why are metals good conductors of electricity? The outer electrons in metals are very loosely bound (not much energy is required for them to leave their atom), so the electrons flow very easily through the lattice of metal atoms when an electric field is applied causing them to be repelled from t ...
Nuclear Chemistry – Chapter 25, chapter 4, section 4
... Nuclear Fission Large atoms _______________ into smaller atoms Generates huge amounts of ___________________. Carried out in ___________________ Could result in a chain reaction of fission like the _____________________ ...
... Nuclear Fission Large atoms _______________ into smaller atoms Generates huge amounts of ___________________. Carried out in ___________________ Could result in a chain reaction of fission like the _____________________ ...
The Atom
... in atoms. Each proton has a mass of ____ amu. Neutrons – The particles of the nucleus that have ______ charge. All neutrons are identical. Neutrons have a mass of _____ amu. Protons and neutrons are located in the __________________ in the center of the atom. They account for most of the ___ ...
... in atoms. Each proton has a mass of ____ amu. Neutrons – The particles of the nucleus that have ______ charge. All neutrons are identical. Neutrons have a mass of _____ amu. Protons and neutrons are located in the __________________ in the center of the atom. They account for most of the ___ ...
Nuclear force
The nuclear force (or nucleon–nucleon interaction or residual strong force) is the force between protons and neutrons, subatomic particles that are collectively called nucleons. The nuclear force is responsible for binding protons and neutrons into atomic nuclei. Neutrons and protons are affected by the nuclear force almost identically. Since protons have charge +1 e, they experience a Coulomb repulsion that tends to push them apart, but at short range the nuclear force is sufficiently attractive as to overcome the electromagnetic repulsive force. The mass of a nucleus is less than the sum total of the individual masses of the protons and neutrons which form it. The difference in mass between bound and unbound nucleons is known as the mass defect. Energy is released when nuclei break apart, and it is this energy that used in nuclear power and nuclear weapons.The nuclear force is powerfully attractive between nucleons at distances of about 1 femtometer (fm, or 1.0 × 10−15 metres) between their centers, but rapidly decreases to insignificance at distances beyond about 2.5 fm. At distances less than 0.7 fm, the nuclear force becomes repulsive. This repulsive component is responsible for the physical size of nuclei, since the nucleons can come no closer than the force allows. By comparison, the size of an atom, measured in angstroms (Å, or 1.0 × 10−10 m), is five orders of magnitude larger. The nuclear force is not simple, however, since it depends on the nucleon spins, has a tensor component, and may depend on the relative momentum of the nucleons.A quantitative description of the nuclear force relies on partially empirical equations that model the internucleon potential energies, or potentials. (Generally, forces within a system of particles can be more simply modeled by describing the system's potential energy; the negative gradient of a potential is equal to the vector force.) The constants for the equations are phenomenological, that is, determined by fitting the equations to experimental data. The internucleon potentials attempt to describe the properties of nucleon–nucleon interaction. Once determined, any given potential can be used in, e.g., the Schrödinger equation to determine the quantum mechanical properties of the nucleon system.The discovery of the neutron in 1932 revealed that atomic nuclei were made of protons and neutrons, held together by an attractive force. By 1935 the nuclear force was conceived to be transmitted by particles called mesons. This theoretical development included a description of the Yukawa potential, an early example of a nuclear potential. Mesons, predicted by theory, were discovered experimentally in 1947. By the 1970s, the quark model had been developed, which showed that the mesons and nucleons were composed of quarks and gluons. By this new model, the nuclear force, resulting from the exchange of mesons between neighboring nucleons, is a residual effect of the strong force.