Laser cooling and trapping of neutral atoms 1 - ENS-phys
... The effect of Doppler cooling is a compression in momentum space, but it has no confining effect in real space, the atoms performing simply a spatial diffusive random walk in the optical molasses. ln order to trap the atoms in real space, the radiation pressure is made also position dependent via a ...
... The effect of Doppler cooling is a compression in momentum space, but it has no confining effect in real space, the atoms performing simply a spatial diffusive random walk in the optical molasses. ln order to trap the atoms in real space, the radiation pressure is made also position dependent via a ...
DYNAMICS AND RELATIVITY (PART II)
... A pile-driver of mass m = 200kg drops a distance s12 = 3m before hitting a beam. It drives the beam a distance s23 = 7.4cm into the ground. If the guide-rails exert a constant frictional force on the pile-driver of f = 60N, what is a) the speed of the pile-driver, v, when it reaches point 2 b) the a ...
... A pile-driver of mass m = 200kg drops a distance s12 = 3m before hitting a beam. It drives the beam a distance s23 = 7.4cm into the ground. If the guide-rails exert a constant frictional force on the pile-driver of f = 60N, what is a) the speed of the pile-driver, v, when it reaches point 2 b) the a ...
Physics 6010, Fall 2010 Symmetries and Conservation Laws
... unravel many aspects of the motion of a system without having to explicitly integrate the equations of motion. Indeed for systems with one degree of freedoms, a conservation law usually determines everything! More generally, if there are enough conservation laws it is possible to completely solve fo ...
... unravel many aspects of the motion of a system without having to explicitly integrate the equations of motion. Indeed for systems with one degree of freedoms, a conservation law usually determines everything! More generally, if there are enough conservation laws it is possible to completely solve fo ...
Studies of Highly Polar Atomic and Molecular Systems: Quantum Dynamics Investigations
... dynamics and the production and manipulation of heavy Rydberg systems composed of lithium ions. This requires devising the theoretical framework for understanding two-level quantum dynamics, covered in Chapter 3 and applying this to two highly polar lithium systems to be produced in the laboratory. ...
... dynamics and the production and manipulation of heavy Rydberg systems composed of lithium ions. This requires devising the theoretical framework for understanding two-level quantum dynamics, covered in Chapter 3 and applying this to two highly polar lithium systems to be produced in the laboratory. ...
Scaling of Efficiency with Applied Magnetic Field in
... cathode and a magnetic field which could be applied or induced by the current itself. This interaction gives rise to a Lorentz force density (f = j × B) that accelerates propellant downstream and out of the thruster. The thrust generation mechanism of the self-field MPDT is well understood and was c ...
... cathode and a magnetic field which could be applied or induced by the current itself. This interaction gives rise to a Lorentz force density (f = j × B) that accelerates propellant downstream and out of the thruster. The thrust generation mechanism of the self-field MPDT is well understood and was c ...
Particle Physics and Cosmology
... What is Dark Matter? • Must be neutral, very long-lived, heavy. • All known particles are easily eliminated. • Dark matter is the best evidence that the standard model of particle physics is incomplete, and motivates many extensions. • Some candidates: – WIMPs (e.g., neutralinos) – Axions 21 August ...
... What is Dark Matter? • Must be neutral, very long-lived, heavy. • All known particles are easily eliminated. • Dark matter is the best evidence that the standard model of particle physics is incomplete, and motivates many extensions. • Some candidates: – WIMPs (e.g., neutralinos) – Axions 21 August ...
IGCSE-14-Momentum
... tyres and the road. The force of friction of the road on the tyre acts in the forward direction and is equal but in the opposite direction to the force of friction of the tyre on the road. ...
... tyres and the road. The force of friction of the road on the tyre acts in the forward direction and is equal but in the opposite direction to the force of friction of the tyre on the road. ...
ENTROPY FOR SU(3) QUARK STATES
... the critical temperature Tc is much higher at about 264MeV. However, the MILC two light quark flavors data [16] shows quite different behavior at much lower temperatures beginning around 125MeV as does the four flavor data [17]. Furthermore, some very interesting three quark simulations have recentl ...
... the critical temperature Tc is much higher at about 264MeV. However, the MILC two light quark flavors data [16] shows quite different behavior at much lower temperatures beginning around 125MeV as does the four flavor data [17]. Furthermore, some very interesting three quark simulations have recentl ...
The spin Hall effect
... • Energy scale for the charge interaction is high, of the order of eV, while the energy scale for the spin interaction is low, of the order of 10-100 meV. • Spin-based electronic promises a radical alternative, namely the possibility of logic operations with much lower power consumption than equival ...
... • Energy scale for the charge interaction is high, of the order of eV, while the energy scale for the spin interaction is low, of the order of 10-100 meV. • Spin-based electronic promises a radical alternative, namely the possibility of logic operations with much lower power consumption than equival ...
EMF fact sheet - Xcel Energy Transmission
... present in equal numbers. When the balance of electric charges is altered, electrical effects are experienced, such as the attraction between a comb and our hair or the drawing of sparks after walking on a synthetic rug in the wintertime. The voltage on an electrical wire is caused by electric charg ...
... present in equal numbers. When the balance of electric charges is altered, electrical effects are experienced, such as the attraction between a comb and our hair or the drawing of sparks after walking on a synthetic rug in the wintertime. The voltage on an electrical wire is caused by electric charg ...
ELECTROMAGNETIC FIELDS, the PHYSICS of LIGHT, and
... y, z, t) = {E0 , 0, 0} sin (ωt − kz), a plane wave with amplitude E0 , frequency ω = 2πf and wavevektor k and polarization along the x-axis, the wave propagating along the z-axis. Maxwells equations cover a great variety of phenomena of nature. To explore this wide range of topics one typically cons ...
... y, z, t) = {E0 , 0, 0} sin (ωt − kz), a plane wave with amplitude E0 , frequency ω = 2πf and wavevektor k and polarization along the x-axis, the wave propagating along the z-axis. Maxwells equations cover a great variety of phenomena of nature. To explore this wide range of topics one typically cons ...
Simulations of antihydrogen formation * F. Robicheaux )
... roughly 1 / 1000 at 4 K, 1 / 1400 at 8 K, and 1 / 1500 at 32 K. We performed simulations at different temperatures because the simulations (described below) indicate that the p̄’s heat the e+ plasma. From Fig. 4 of Ref. [2], the fraction of p̄’s detected as H̄ atoms is roughly 1 / 5000 for 5 ⫻ 105 e ...
... roughly 1 / 1000 at 4 K, 1 / 1400 at 8 K, and 1 / 1500 at 32 K. We performed simulations at different temperatures because the simulations (described below) indicate that the p̄’s heat the e+ plasma. From Fig. 4 of Ref. [2], the fraction of p̄’s detected as H̄ atoms is roughly 1 / 5000 for 5 ⫻ 105 e ...
Quantum vacuum thruster
A quantum vacuum plasma thruster (or Q-thruster) is a proposed type of spacecraft thruster that would work in part by acting on the virtual particles produced by quantum vacuum fluctuations. This was proposed as a possible model for an engine that could produce thrust without carrying its own propellant. Some physicists working with microwave resonant cavity thrusters think that they might be the first examples of such an engine.