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Showing 1 to 20 of 47 for “"Momentum Distribution"”.
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The spin dependent momentum distribution of the neutron and the proton in helium-3
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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The Longitudinal Momentum Distribution of Solid and Normal Liquid 4He: The Art of Neutron Compton Scattering
Submitted by Jenny Wong-Welch (wongwel2@illinois.edu) on 2011-11-10T18:10:16Z No. of bitstreams: 1 1992_blasdell.pdf: 11979159 bytes, checksum: 7e22939bec7d03aaa140955d4a71ed4b (MD5)
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Dynamics in Cold Atomic Gases: Resonant Behaviour of the Quantum Delta-Kicked Accelerator and Bose-Einstein Condensates in Ring Traps
… accelerator with an initial symmetric momentum distribution are considered. The system is modelled as an ideal, non-interacting atomic gas, with a temperature-dependence governed by the width of the initial momentum distribution. The existence of resonant and antiresonant behaviour is …
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MOMENTUM SIGNATURES OF THE ANDERSON TRANSITION
… the Anderson metal-insulator transition (MIT) in momentum space. We find that an initial plane-wave propagating in a disordered medium exhibits a diffusive background and two interference peaks, the coherent backscattering (CBS) and the coherent forward scattering (CFS) peaks in the momentum …
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On the microscopic theory of liquid ⁴He
… wave functions are used to calculate the momentum distribution of the atoms in the ground state and the condensate fraction. We, then, study in detail the energy spectrum of an elementary excitation traveling with momentum k in the liquid. A perturbation theory in a correlated basis …
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Nuclear Fragmentation Energy and Momentum Transfer Distributions in Relativistic Heavy-Ion Collisions
<p>An optical model description of energy and momentum transfer in relativistic heavy-ion collisions, based upon composite particle multiple scattering theory, is presented. Transverse and longitudinal momentum transfers to the projectile are shown to arise from the real and absorptive part of the …
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Many-body decoherence with cold atoms in optical lattices
… and how this impacts upon the visibility of the momentum distribution. This study proposes a solution to a recent experimental observation of effects on the momentum distribution of impurity atoms in a Bose-Einstein condensate that would not be explained by polaronic behaviour alone.
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Modeling the effects of surface plasmon resonance on hot electron collection in a metallic-semiconductor photonic crystal device
… the effects of anisotropic hot electron momentum distribution caused by surface plasmon resonance. Near resonant wavelength, surface plasmon dominates the electric field in the thin Au layer, which generates hot electrons with high enough momentum preferentially normal to the Schottky …
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The coincident measurement of neutron-proton pairs from the photodisintegration of lithium-6
… and quasideuteron). A 2S harmonic oscillator momentum distribution of the np pair momentum transverse to the photon beam, which was assumed to be equal to the transverse momentum of the quasideuteron inside the nucleus. A value of qo = 84.5 ± 5.3 Mev/c was obtained, which corresponds to a FWHM …
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Measurement of Z Boson Transverse Momentum In Proton-Antiproton Collisions At sqrt(s)=1.96 TeV
… measurement of the shape of the boson transverse momentum distribution in $p\bar{p}\rightarrow Z/\gamma^{*}\rightarrow e^+e^- +X$ events at a center-of-mass energy of 1.96 TeV. The measurement is made for events with electron-positron mass between $70 < M_{ee} < 110$ GeV/c$^{2}$ and uses 976 …
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Μελέτη των χαρακτηριστικών των γεγονότων με οπισθοδρομούντα πρωτόνια σε αντιδράσεις νετρινών και αντινετρινών σε Ne/H₂ στο θάλαμο φυσαλλίδων BEBC
… protons might allow the study of the high momentum component tail of the Fermi momentum distribution, arising, perhaps, from short-range nucleon-nucleon correlations in the nucleus. The detailed study of the characteristics of the events with backward protons in charged current …
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Theory of Alpha-Nucleus Collisions at High Energies
… agreement with experimental data for angular distributions, and total and reaction cross sections is found. The inclusive momentum distribution for projectile fragmentation is developed in terms of Lorentz invariant three-particle phase space. The participant-spectator description of the …
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Towards the quark gluon plasma via MHV techniques
… gluon emission in QCD. We then compute the momentum distribution for one, two and three soft and collinear radiative gluons from a hard struck quark. Our MHV results exhibit non-Abelian information about the correlation of gluons. As a phenomenological analysis, we study the energy spectrum …
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Strange particle production in pi-p and pi+n interactions at 2.5 GeV/c
… on the final state particles, had protons with momentum greater than 250 MeV/c. These protons were not isotropic in the laboratory and therefore not spectators in the sense of the impulse approximation. Protons whose momentum lay in the interval 0 to 250 MeV/c were generally isotropic, and their …
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Pairing and entanglement: quantum Monte Carlo studies
… temperature. New estimators of the pair momentum distribution are implemented, yielding in a clear in-situ signature of a pairing mechanism (dubbed FFLO after its first proposers) which implies a microscopic phase fluctuation in space between a normal fluid and a superfluid. VMC is used …
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Dynamical pairing states in cold gases
… fermions in the initial state are encoded in the momentum distribution of molecules after the sweep. Finally, in Chapter 5, we consider pair excitations caused by the harmonic modulation of the interaction, and compare our results to experimental observations.
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Effects of interaction in Bose-Einstein condensates
… Bragg scattering was then used to probe the momentum distribution. We found reasonable agreement with the theory. With the same technique of Bragg diffraction, we studied the four-wave mixing process for matter waves. The BEC was split into two strong source waves and a weak seed wave. The …
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JLab E12-14-012 (e,e'p) cross section measurements for Ar and Ti
… model will be to determine the energy and momentum distribution of protons and neutrons inside the argon nucleus. The JLab E12-14-012 experiment performed at Jefferson Laboratory in Newport News, Virginia, ran in 2017 and will provide such measurements in Argon and Titanium using electron …
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The Beam Dynamics And Beam Related Uncertainties In Fermilab Muon G-2 Experiment
… fast rotation analysis to study the muon radial momentum distribution, which provides the key input for evaluating the electric field correction to the measured aμ.
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Experimental examination of ionization processes of noble gases in strong laser fields
… and simultaneously the doubly differential momentum distribution of the photoelectrons. The latter reveals a rich structure indicate of different ionization processes.
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