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Showing 1 to 15 of 15 for “"nuclear interaction"”.
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Tuning the coherent electron-nuclear interaction in a semiconductor quantum dot
… spin system, as it interacts with the ∼ 10^5 nuclear spins that compose the quantum dot. Ideally, this system can be used to implement a multi-qubit register formed by collective excitations of the nuclei surrounding the electron, or to probe fundamental many-body physics through engineering …
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Tddft Derivative Couplings And Other Topics In Quantum Chemistry
… processes depends critically on the electron-nuclear interaction, which is quantified by the derivative coupling between the two involved states. The first part of the work (chapters 3-6) presented here mainly focuses on understanding the electron-nuclear interaction using the electronic …
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Inelastic nuclear scattering of strongly absorbed particles
… from the Austern-Blair theory of inelastic nuclear scattering. These formulae are an extension of the strong absorption model of Frahn and Venter for elastic scattering. AU the well-known features of inelastic angular distributions of composite particles are shown explicitly. These include …
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Green's function Monte Carlo calculations of few-nucleon systems
… isospin symmetry breaking effects in the nuclear interaction. We briefly discuss the motivation for this potential, called Argonne $v\sb{18},$ as well as the Urbana models of three-nucleon interactions. Our approach for modeling the ground states of nuclear systems begins with the …
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Experiments to investigate phonon-nuclear interactions
… to test for and investigate a proposed phonon-nuclear coupling interaction and an associated nuclear excitation transfer mechanism. Electric and magnetic interactions of phonons with atomic nuclei have been studied for several decades. However, such second-order interactions are too weak to …
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Rydberg spectroscopy of calcium monofluoride
Considered to be a prototype for e⁻ <--> nuclear interaction in more complex molecules, the Alkaline earth monohalides (MX) have a simple electronic structure which consists of two closed-shell atomic ions (M²⁺ + X) in the ion-core and a non-bonding electron in the outer orbital. Their Rydberg …
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Quantum Monte Carlo Calucations Of Three And Six-Quark States
… to quark descriptions of single baryon and nuclear systems using a non-relativistic constituent quark model Hamiltonian. The assumed interaction includes a three-body term arising due to flux-tube confinement, and two-body interactions arising from one-gluon and one-pion exchange. It is …
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Applications of group theory to few-body physics
… there have been persistent claims of anomalous nuclear reactions in condensed matter environments. A Unified Model [38] has been proposed to systematically account for most of these anomalies. However, all the work done so far has used simple scalar nuclear Hamiltonians. In this thesis, we …
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Coherence and state engineering of an optically active central spin system
… probe the collective dynamics of its resident nuclear spin ensemble. An all-optical quantum control of the electron spin is realised for the first time in a GaAs QD and subsequently used to refocus the strong hyperfine interaction between the spin and the nuclear ensemble. The measurement …
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Quark masses : an environmental impact statement
… mass) and the strength of the low-energy nuclear interaction. We classify universes on that slice as congenial if they contain stable nuclei with electric charge 1 and 6 (thus making organic chemistry possible in principle). Universes that lack one or both such stable nuclei are classified …
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NUCLEAR COLLECTIVE MODES AT FINITE TEMPERATURE AS A PROBE OF NUCLEAR STRUCTURE AND DYNAMICS
The framework of this Thesis is the study of nuclear structure and reaction dynamics through gamma-spectroscopy measurements in fusion-evaporation reactions. The gamma emission associated with the Dynamical Dipole (DD) mode and the Giant Dipole Resonance (GDR) is a very good tool to study the role …
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Evidence of Nuclear Rainbow in the 16O + 27Al elastic scattering @ 280 MeV
… research line aiming at the investigation of the nuclear rainbow in the scattering process involving heavy nuclei. Nuclear rainbow is a peculiar phenomenon which reveals the nuclear interaction at small distances, where the projectile and target density overlaps can reach values up to twice the …
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Effective interactions and pairing correlations: from nuclei to compact stars
… is to study some general properties of nuclear many-body systems, ranging from infinite nuclear matter to finite nuclei. Our investigations is focused in particular on nuclear systems with neutron excess, to get a deeper insight in the open issue which concerns the isospin dependence of …
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Variable Fidelity Monte Carlo Neutron Transport: On Combining Multi-Group and Continuous Energy Representation in Monte Carlo Calculations
… and continuous energy (CE) representation of nuclear interaction data in different spatial regions. In general, MG MC calculations run 3-4 times faster than CE MC. Thus, it might be possible to reduce the calculation time without significant loss of accuracy, if the high fidelity CE …
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Few body problems in nuclear and particle physics
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-08T16:17:27Z No. of bitstreams: 1 1983_carlson.pdf: 4348858 bytes, checksum: 6ce5277d5cb0c37d5c05c29b8172fc7c (MD5)