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133,642 research outcomes, page 1 of 2,673
  • publication . Article . 2011
    Closed Access
    Authors:
    Zatsarinny Oleg; Bartschat K.; Allan M.;
    Project: SNSF | Chemical and Physical Pro... (200020_131962)

    In a joint experimental and theoretical effort we carried out a detailed study of elastic electron scattering from Kr atoms. Absolute angle differential cross sections for elastic electron scattering were measured over the energy range 0.3 9.8 eV with an energy width of...

  • publication . Other literature type . 2019
    English
    Authors:
    Hernandez, Oscar;
    Persistent Identifiers
    Publisher: University of British Columbia

    The discovery of the proton and deuteron radius puzzles from Lamb shift measurements of muonic atoms has initiated experimental efforts to probe heavier muonic systems and casts doubt on earlier analysis based on ordinary atoms. For muonic atoms, the large muon mass res...

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  • publication . Doctoral thesis . 2017
    Open Access English
    Authors:
    Wiesel, Marco;

    The ARTEMIS experiment aims at measuring magnetic moments of electrons bound in highly charged ions that are stored in a Penning trap. It will provide access to effects of quantum electrodynamics (QED) in the extreme fields close to an ionic nucleus. Additionally, due t...

  • publication . Thesis . 1982
    Open Access English
    Authors:
    Hearn, David Brian;
    Publisher: University of Southampton

    Stimulated electronic Raman scattering, SERS, is a simple method of efficiently generating widely tunable infrared radiation. This work describes techniques by which the tuning capability of this process may be extended. To this end several schemes in Caesium and Barium...

  • publication . Preprint . 2020
    Open Access
    Authors:
    sajeev Y;
    Publisher: American Chemical Society (ACS)

    We present an efficient ab initio non-Hermitian Floquet method for computing the photoionization resonances of an electronic system interacting with linearly polarizedmonochromatic laser light. Unlike the direct "brute force" diagonalization method, which has been used ...

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  • publication . Article . 2019
    Open Access
    Authors:
    Atalay, B.; Brage, T.; Jonsson, P.; Hartman, H.;
    Publisher: Aperta

    We present extensive multiconfiguration Dirac-Hartree-Fock and relativistic configuration interaction calculations including 106 states in doubly ionized silicon (Si III) and 45 states in triply ionized silicon (Si IV), which are important for astrophysical determinatio...

  • publication . Article . 2011
    Open Access English
    Authors:
    Ürer, Güldem; Özdemir, Leyla;
    Publisher: PHYSICAL SOC REPUBLIC CHINA

    We report on a relativistic multiconfiguration Dirac-Fock calculation including the transverse Breit and quantum electrodynamic contribution on the low-lying level structure of doubly ionized actinium (Z = 89). Excitation energies and the electric dipole (E1) and quadru...

  • publication . Article . 2010
    Open Access
    Authors:
    Klimin S.; Pytalev D.; Popova M.; Malkin B.; Vanyunin M.; Korableva S.;

    High-resolution optical Fourier spectroscopy was used to study the energies and widths of the crystal-field (CF) levels, hyperfine and deformation level splittings, and isotopic effects in the LiYF4: Tm3+ single crystals. We present the corrected sets of the CF levels a...

  • publication . Other literature type . 1965
    English
    Authors:
    Irwin, Timothy Alexander Ready;
    Persistent Identifiers
    Publisher: University of British Columbia

    The value of the dipole moment ,μ, of NH in the A³π state was found to be 1.31 ± .03 Debye. This value was determined from data on the Stark effect measured from spectrograms of the A³π- X³Σ-, 3360 Å, band taken on a 3.4 meter grating spectrograph in third order giving ...

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  • publication . Conference object . 2013
    Open Access
    Authors:
    Grahn, T; Watkins, H; Joss, DT; Page, RD; Carroll, RJ; Dewald, A; Greenlees, PT; Hackstein, M; Herzberg, RD; Jakobsson, U; ...
    Persistent Identifiers

    Transition probabilities have been measured between the low-lying yrast states in 175Au by employing the recoil distance Doppler-shift method combined with the selective recoil-decay tagging technique. Reduced transition probabilities and magnitudes of transition quadru...

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  • publication . Thesis . 2010
    Open Access
    Authors:
    Ejtemaee, Sara;

    Trapped ions are one of the most promising candidates for quantum information applications. We describe an experimental setup using a linear rf Paul trap for confining 171Yb+ ions. In particular, the required lasers and lock setups are described. One of the key requirem...

  • other research product . Other ORP type . 2007
    Open Access German
    Authors:
    Herrwerth, O.;
    Publisher: Ruprecht-Karls Universität

    We studied ionization of several nobel gases and molekular nitrogen by linear polarized intense femtosecond laser pulses at different wavelengths (800 nm and 1300 nm) and peak intensities. By measuring the vector momentum distributions of ions and electrons we are able ...

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  • other research product . Lecture . 2006
    Closed Access English
    Authors:
    Grosse, E.;

    Dipole strength below and above particle thresholds - new data and new ideas

  • publication . Article . 2011
    Open Access English
    Authors:
    Loh, Huanqian; Wang, Jia; Grau, Matt; Yahn, Tyler S.; Field, Robert W.; Greene, Chris H.; Cornell, Eric A.;
    Publisher: American Institute of Physics (AIP)

    National Science Foundation (U.S.).

  • publication . Preprint . 2021
    Open Access
    Authors:
    Xiaoen Wang;
    Publisher: Research Square Platform LLC

    Abstract Only Coulomb force is considered in Bohr model. It is found that electron in ground state hydrogen atom is also affected by Lorentz force of the same magnitude. Under the combined action of Coulomb force and Lorentz force, the radius of hydrogen atom is twice t...

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  • publication . Article . 2009
    Open Access English
    Authors:
    Kobayashi, Hirokazu; Yamauchi, Miho; Ikeda, Ryuichi; Kitagawa, Hiroshi;
    Persistent Identifiers
    Publisher: Royal Society of Chemistry

    Size-controlled atomic-level Pd-Au alloy nanoparticles have been synthesized with a wide range of atomic ratios by a facile method using H 2 gas, and their controllable hydrogen-absorption properties have been studied from hydrogen pressure-composition isotherms and sol...

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  • publication . Doctoral thesis . 2013
    Open Access English
    Authors:
    Trappe, Martin-Isbj��rn;
    Persistent Identifiers

    In the present thesis Berry phases for metastable states of hydrogen and helium exposed to external electromagnetic fields are investigated. One main goal is the derivation of a parity-violating observable incorporating the electroweak mixing angle. The study is done in...

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  • publication . Patent . 2002
    Open Access English
    Authors:
    Stowers, M.A.; Wuijckhuijse, A.L.; Marijnissen, J.C.; Kientz, C.E.;
    Publisher: European Patent Office

    In a method for detecting and identifying bioaerosol particles in the air, the bioaerosol particles in a particle stream are selected in an ATOFMS (aerosol time-of-flight mass spectrometer) by means of fluorescence techniques, and only the selected bioaerosol particles ...

  • publication . Article . Part of book or chapter of book . 2012
    Closed Access English
    Authors:
    G. Soff; I. Bednyakov; T. Beier; F. Erler; I. A. Goidenko; U. D. Jentschura; L. N. Labzowsky; A. V. Nefiodov; G. Plunien; R. Schützhold; ...
    Persistent Identifiers

    Atomic binding energies are calculated at utmost precision. A report on the current status of Lamb-shift predictions for hydrogenlike ions, including all quantum electrodynamical corrections to first and second order in the fine structure constant alpha is presented. Al...

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  • publication . Conference object . 2016
    Open Access English
    Authors:
    van der Weerden, T.H.P.; Kokkelmans, S.J.J.M.F.; Vredenbregt, E.J.D.;

    Rydberg atoms have experimentally interestingproperties such as strong long-range Van der Waals interactions and the dipole blockade effect. In optical lattices the blockade effect ensures that only one Rydberg excitation per site is allowed, effectively creating a Rydb...

  • publication . Part of book or chapter of book . 2009
    Open Access English
    Authors:
    Wolf, A.L.; van den Berg, S.A.; Gohle, C.; Salumbides, E.J.; Ubachs, W.M.G.; Eikema, K.S.E.; Corkum, P.; Silvestri, S.; Nelson, K.A.; Riedle, E.; ...
    Publisher: Springer
  • publication . Article . 2000
    Restricted English
    Authors:
    Geithner, W.; Hilligsøe, Karen Marie; Kappertz, S.; Katko, G.; Keim, M.; Kloos, S.; Kotrotsios, G.; Lievens, P.; Marinova, K.; Neugart, R.; ...

    We report on fast-beam collinear laser spectroscopy measurements that demonstrate the feasibility of accurate isotope shift measurements for short-lived Ne isotopes including the proton-halo candidate 17Ne. Ultra-high sensitivity is achieved by the application of an eff...

  • publication . Doctoral thesis . 2008
    Open Access
    Authors:
    Deissler, Benjamin;
    Persistent Identifiers
    Publisher: University of Virginia

    An atom interferometer using Bose - Einstein condensates has been implemented and is used to measure the dynamic polarizability of 87Rb. An off - resonant standing - wave laser beam is used to manipulate the motion of atomic wavepackets in order to implement splitting a...

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  • publication . Article . 2016
    Open Access English
    Authors:
    Lora da Silva, E.; Marinopoulos, A. G.; Vieira, R. B. L.; Vilão, R. C.; Alberto, H. V.; Gil, J. M.; Lichti, R. L.; Mengyan, P. W.; Baker, B. B.;
    Persistent Identifiers
    Publisher: American Physical Society
    Project: FCT | PEst-OE/FIS/UI0036/2014 (136051), FCT | SFRH/BD/87343/2012 (SFRH/BD/87343/2012), FCT | PTDC/FIS/102722/2008 (102722)
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  • publication . Conference object . 2010
    Closed Access English
    Authors:
    Engelen, W.J.; van der Heijden, M.A.; Smakman, E.P.; Debernardi, N.; Vredenbregt, E.J.D.; Luiten, O.J.;

    We report on the development of ultracold electron beams, which are created from a cloud of laser-cooled atoms by near-threshold photoionization or field ionization of Rydberg atoms. The electron beams that are created from this source will be used to perform single-sho...

  • publication . Conference object . 2014
    Open Access English
    Authors:
    Mey, Sebastian; Gebel, Ralf;
    Persistent Identifiers

    The JEDI Collaboration (Jülich Electric Dipole Moment Investigations) investigates means to measure permanent electric dipole moments (EDMs) of charged, light hadrons in dedicated storage rings. While the standard model prediction for the EDM gives unobservably small ma...

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  • publication . Research . 1991
    Open Access English
    Authors:
    Kobayashi, Takayuki; Fukumura, Kazuko;
    Persistent Identifiers
    Publisher: 滋賀医科大学

    Integral and time-differential Moessbauer spectra taking account of hetastable atomic states are calculated properly. The results are consistent with the calculations by Hamermesh which are applicable to a system having no metastable atomic state.

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  • publication . Article . 2001
    Closed Access English
    Authors:
    ÖNEM, Şaban Coşkun; KIŞ, Mehmet;

    Firstly the equation of motion were obtained for the relativistic two-body system interacting electromagnetically. Then the orbit equations were find for three special cases (the positronium, the hydrogen atom and the m(2) > m(1) case) and finally the orbit drawing were...

  • publication . Research . 1950
    Open Access English
    Authors:
    FUKUROI, Tadao; TANUMA, Seiichi; TOBISAWA, Shotaro;
    Persistent Identifiers
    Publisher: Tohoku University

    The Ettingshausen-Nernst effect of a single crystal of highly purified tellurium has been measured over the temperatures ranging from -160 to +300℃. In the intrinsic semiconductor range of temperature, it was found that the value of coefficient of this effect is roughly...

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  • publication . Master thesis . 2013
    Open Access
    Authors:
    Schönleber, D.;
    Publisher: Ruprecht-Karls-Universität

    Inevitably present in many current experiments with ultracold Rydberg atoms, dissipative effects such as dephasing and decay modify the dynamics of the examined system. In this thesis, the dynamics of many-body Rydberg systems in the incoherent regime is studied numeric...

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  • publication . Master thesis . 2019
    Open Access
    Authors:
    Rosner, M.;
    Publisher: Ruprecht-Karls-Universität

    Certain highly charged ions (HCIs) exhibit enhanced sensitivity to fundamental interactions due to the specifics of their level structure, enabling improvement in atomic clocks and frequency metrology. This allows more precise tests of fundamental physics than achievabl...

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  • publication . Article . 2021
    Authors:
    Jae Hoon LEE; Hyojun SEOK;
    Persistent Identifiers
    Publisher: Korean Physical Society

    Quantum measurements with atoms have been at the forefront of quantum technology and provide crucial information for a better understanding of quantum physics ever since their conception over a century ago. The universality of the quantized energy states of atoms makes ...

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  • publication . Doctoral thesis . 2010
    Authors:
    Burke, Brian Gregory;
    Persistent Identifiers
    Publisher: University of Virginia

    This work addresses economical alternatives to electron beam lithography (EBL) by deep ultra-violet (UV) photolithography and proposes surface enhanced transmission techniques for direct-write lithography, investigates surface doping in silicon by Raman spectroscopy for...

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  • publication . Preprint . Article . 2020
    Open Access
    Authors:
    Tianyu Zhu; Troy Van Voorhis;
    Publisher: American Chemical Society (ACS)

    <p>The dipole moment of a single water molecule in liquid water has been a critical concept for understanding water’s dielectric properties. In this work, we investigate the dipole moment of liquid water through a self-attractive Hartree (SAH) decomposition of tot...

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  • publication . Research . 1985
    Open Access Japanese
    Persistent Identifiers
    Publisher: 九州大学大学院総合理工学研究科

    The necessary laser power in laser fluorescence spectroscopy for light impurity detection at the periphery of high temperature plasmas is evaluated for cases of direct excitation and multi-photon excitation. The results show that the direct excitation is more promising ...

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  • We compare fluctuation electron microscopy data to simulations from phenomenological atomic models and demonstrate a strong correspondence between some features in the experimental data and certain atomic configurations. This allows the nature of atomic clustering in a ...

  • The possibility to use phasic effect to turn off a coherent population trapping for creating a switcher of the light propagation direction in an electromagnetically induced gratings in the medium with Λ-atoms is studied theoretically in this paper. The allowable scope ...

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  • publication . Doctoral thesis . Other literature type . 2018
    Open Access
    Authors:
    Joshi, Manoj;
    Persistent Identifiers
    Publisher: Physics, Imperial College London

    From subatomic particles to macromolecules, quantum mechanics has a deep impact in understanding the interactions and nature of such constituents of matter. The paradoxical observations of entanglement in quantum systems is used in quantum computations. Ion traps are am...

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  • publication . Other literature type . 1993
    English
    Authors:
    Duty, Timothy Lee;
    Persistent Identifiers
    Publisher: The University of British Columbia

    μSR studies of crystalline C₆₀ reveal the existence of two distinct paramagnetic states. The experiments described in this thesis confirm that one is an exohedrally bonded muonium radical, while the other is endohedral muonium with a hyperfine parameter Aμ, close to tha...

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  • Cold atom samples, at temperatures of the order 100 µK, are useful for a wide reaching array of new and exciting technological and scientific endeavours. Atoms are conventionally cooled by Doppler cooling, which relies on the continuous absorption and re-emission of pho...

  • publication . Thesis . 2005
    Open Access English
    Authors:
    Minns, R. S.;
    Publisher: University of London

    New experiments and theory contributing to the understanding of the dynamics and control of molecular Rydberg wave packets are presented. An intuitive scheme for controlling the rotational quantum state of a Rydberg molecule is demonstrated experimentally. We determine ...

  • publication . Doctoral thesis . 2019
    Open Access
    Authors:
    Arias Suarez, Alda Lisseth;
    Persistent Identifiers
    Publisher: Heidelberg University Library

    This thesis describes studies on a Rydberg-dressed ultracold atom system as a versatile platform for non-equilibrium physics research, atom-light interactions analysis and atomic sensing applications. This work includes a description of the experimental system, an ultra...

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  • publication . Article . 1973
    Open Access English
    Authors:
    STONEHAM, A. M.; FLYNN, C. P.;
    Publisher: IOP PUBLISHING LTD

    The electromigration and thermomigration of light interstitials, such as hydrogen in metals, have been examined in terms of the quantum theory of diffusion of Flynn and Stoneham. The pronounced isotope effect observed in the effective charge Z* is shown to come from the...

  • publication . Article . 1990
    Open Access English
    Authors:
    Maan, A.C.; Tiesinga, E.; Stoof, H.T.C.; Verhaar, B.J.;
    Persistent Identifiers

    We study the spin-exchange frequency shift of the cryogenic hydrogen maser for B≠0. A general expression is derived in terms of populations of ground-state hyperfine levels. The coefficients in this expression are calculated in the degenerate-internal-states approximati...

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  • publication . Research . 1989
    Open Access English
    Authors:
    ABE, T.; SATO, S.; NAKAJIMA, K.; TOKI, K.; KURIKI, K.;
    Publisher: 宇宙科学研究所

    資料番号: SA0035091000

  • publication . Article . 2017
    English
    Authors:
    Hayakawa, Takehito; Hideyuki, Kotaki; Masaki, Kando; Tatsufumi, Nakamura; Toshitaka, Kajino;

    Progress in laser physics enabled us to produce various quantum beams from high field plasma generated from the interaction between high peak power laser and materials. We have proposed the nuclear astrophysics experiments using gamma-ray pulses generated by the high pe...

  • publication . Doctoral thesis . 2011
    English
    Authors:
    Rodewald, Jonas;
    Persistent Identifiers
    Publisher: (:none)

    In this thesis the setup of an optical time-domain ionizing matter wave Talbot-Lau interferometer (OTIMA-TLI) is discussed. The experiment aims at demonstrating the quantum wave nature of increasingly heavy particles. The mass limit of the current version lies around 25...

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  • publication . Article . 2000
    Closed Access English
    Authors:
    Hoang A.H.; Labelle P.; Zebarjad S.M.;

    A detailed presentation is given of the analytic calculation of the single-photon annihilation contributions to the positronium ground-state hyperfine splitting, to order [Formula Presented] in the framework of nonrelativistic effective theories. The current status of t...

  • publication . Article . 2014
    Open Access English
    Authors:
    Czarnota, M.; Banaś, D.; Berset, Michel; Chmielewska, D.; Dousse, Jean-Claude; Hoszowska, Joanna; Maillard, Yves-Patrick; Mauron, Olivier; Pajek, M.; Polasik, M.; ...
    Project: SNSF | Colloque international su... (1000-001286)

    A detailed investigation of the Lα1,2 (L3→M4,5) and Lβ1 (L2→M4) x-ray satellite and hypersatellite structures in zirconium, molybdenum, and palladium atoms multiply ionized by impact with 278.6-MeV oxygen ions is reported. The x-ray spectra were measured with a high-res...

  • publication . Conference object . 2010
    Open Access English
    Authors:
    Shi, Jindan; Ibsen, M.;

    We show that p phase-shifted Distributed Feedback (DFB) Raman fibre lasers of 30cm length are resilient against phase and amplitude errors up to ~5%, with negligible deterioration of the threshold and slope-efficiency of the lasers.

133,642 research outcomes, page 1 of 2,673