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Showing 1 to 13 of 13 for “"Nuclear charge"”.
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Nuclear charge distribution of ¹⁸¹Ta
… produced them. When a form is chosen for the nuclear charge distribution, a theoretical spectrum can be calculated…The parameters ��, c, and t can then be chosen to make the calculated spectrum coincide for the 3D-2P, and 2P-1S transitions with the observed spectrum.</p> <p>The first part of …
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Nuclear charge distribution of Tm¹⁶⁹
<p>The distribution of electrical charge in the nucleus of Tm<sup>169</sup> was determined by measurement of the energies of the X rays of muonic atoms of Tm<sup>169</sup>.</p><p>The values of the energies of the K X rays and the L X rays were calculated from a model assuming an anisotropic Fermi …
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Determination of the Helium -6 Nuclear Charge Radius Using High-Resolution Laser Spectroscopy
The charge radius of the neutron-rich 6He (t 1/2 = 807 ms) nucleus was determined to a precision of 0.7% in a laser spectroscopic measurement at Argonne National Laboratory. The 6He atoms were produced via the 12C(7Li, 6He)13N reaction at the Argonne Tandem Linac Accelerator System (ATLAS), and …
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Determination of the Helium-6 Nuclear Charge Radius Using High-Resolusion Laser Spectroscopy
The charge radius of the neutron-rich 6He (t1/2 = 807 ms) nucleus was determined to a precision of 0.7% in a laser spectroscopic measurement at Argonne National Laboratory. The 6He atoms were produced via the 12C(7Li, 6He)13N reaction at the Argonne Tandem Linac Accelerator System (ATLAS), and were …
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The asymptotic expansion method for heliumlike ions
… of the asymptotic expansion method for a nuclear charge Z ≥ 3. The asymptotic expansion method provides a simple analytical method to calculate the energies and properties of atoms with one electron in a highly excited state called a Rydberg state. The method was originally developed by …
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Optimization of the valence energy variance of the CuH molecule
… (in terms of the number of electrons and nuclear charge Z). This naturally leads to partitioning the local energy into components due to each electron shell. The minimization of the variation of the valence shell local energy is used to optimize a simple two parameter CuH wave function. …
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Single pi-zero production in neutrino interactions
… reactions, vn -> vnpio and vp + vprr , and the charged current reaction, vn -> u-ppi0 ,were investigated. The neutrino detector was made up of optical spark chambers and liquid o and solid scintillation counters. The pi0 is detected by observing showers from its decay into two gamma rays. Muons …
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Improvements in Upper Limits of the Neutralino-Proton Cross Section through use of Model-Independent Nuclear Form Factors.
… standard, one or two parameter model-dependent nuclear form factors, which may not exactly mirror the actual form factor for the particular nucleus in question. As is well known, elastic electron scattering can allow for very precise determinations of nuclear form factors and hence nuclear …
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Probing New Physics with Spectroscopy of Trapped Ions
… higher-order SM corrections originating from nuclear physics. This thesis reports IS spectroscopy experiments with laser-cooled and trapped singly ionized Ytterbium (Yb⁺) ions to search for new physics through the proposed novel method. The King-plot nonlinearities thus observed for the …
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The Interstellar Transport of Galactic Cosmic Rays
… rays with energies from 50-550 MeV/nucleon and nuclear charge 5<=Z<=28 are reported here. These results cover observations during two solar minimum periods of the solar cycle, the most recent of which exhibited very low levels of solar activity and the highest galactic cosmic-ray intensities of …
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Measurement of Hyperfine Coupling Constants of the 5d²D₃/₂ and 5d²D₅/₂ Levels in Atomic Cesium Using Polarization Quantum Beat Spectroscopy
… it is essential to understand its atomic and nuclear structure. Precision measurement of its excited-states properties such as hyperfine structure provides global information on nuclear charge and current distributions and also serves as a check to the theory and a calibration of calculated …
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High-precision QED calculations of the hyperfine structure in hydrogen and transition rates in multicharged ions
… finally model-independent informations about nuclear structure parameters with utmost precision. Considering the current status of the determination of corrections to the hyperfine splitting of the ground state in hydrogen, this thesis provides further improved calculations by taking into …
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Orbital Polarization in Relativistic Density Functional Theory
… of screening of valence electrons from the nuclear charge by inner-shell electrons. One can ask that how relativistic effects come into play in ordinary density functional theory. Of course ordinary density functional theory does not include those effect. Four-current density functional …