• Thumbnail for Hyperfine structure
    In atomic physics, hyperfine structure is defined by small shifts in otherwise degenerate electronic energy levels and the resulting splittings in those...
    28 KB (4,377 words) - 02:23, 18 July 2024
  • Thumbnail for Fine-structure constant
    What is the meaning of the fine structure constant? — Wolfgang Pauli Dimensionless physical constant Hyperfine structure In quantum electrodynamics, α is...
    62 KB (7,093 words) - 09:00, 12 August 2024
  • Thumbnail for Energy level
    Pauli exclusion principle, the Aufbau principle, and Hund's rule. Fine structure arises from relativistic kinetic energy corrections, spin–orbit coupling...
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  • nucleus is a slighter correction to the energy levels known as the hyperfine structure. This section presents a relatively simple and quantitative description...
    28 KB (4,302 words) - 23:55, 25 June 2024
  • Thumbnail for Doppler cooling
    atom with a simple two level structure, whereas most atomic species which are laser cooled have complicated hyperfine structure. Mechanisms such as Sisyphus...
    19 KB (2,463 words) - 19:47, 7 August 2023
  • Thumbnail for Fine structure
    perturbation theory. However, this equation does not contain the hyperfine structure corrections, which are due to interactions with the nuclear spin...
    18 KB (3,083 words) - 21:46, 25 May 2024
  • Thumbnail for Hydrogen atom
    hydrogen, including fine structure (excluding Lamb shift and hyperfine structure), are given by the Sommerfeld fine-structure expression: E j n = − μ c...
    39 KB (5,976 words) - 10:29, 16 August 2024
  • Thumbnail for Zeeman effect
    example, the fine-structure corrections are ignored. In the magnetic dipole approximation, the Hamiltonian which includes both the hyperfine and Zeeman interactions...
    34 KB (5,064 words) - 14:13, 9 June 2024
  • Thumbnail for Robert Bacher
    under the supervision of Samuel Goudsmit on the Zeeman effect of the hyperfine structure of atomic levels. After graduate work at the California Institute...
    30 KB (3,883 words) - 05:18, 29 February 2024
  • moment; the quadrupole moment does cause some small shifts in the hyperfine structure as well. All nuclei that have nonzero spin also possess a nonzero...
    14 KB (1,883 words) - 11:51, 2 June 2024
  • Thumbnail for Magneto-optical trap
    below the photon recoil limit. However, for atoms with an unresolved hyperfine structure, such as 7Li, the temperature achieved in a MOT will be higher than...
    22 KB (3,162 words) - 04:35, 22 April 2024
  • Thumbnail for Rotational spectroscopy
    applying extra terms to account for centrifugal distortion, fine structure, hyperfine structure and Coriolis coupling. Fitting the spectra to the theoretical...
    51 KB (7,154 words) - 19:22, 3 May 2024
  • Thumbnail for Optical pumping
    of the linewidth of a transition and undesirable effects such as hyperfine structure trapping and radiation trapping. Therefore the orientation of the...
    3 KB (364 words) - 04:59, 5 June 2021
  • Thumbnail for Robert A. Frosch
    from NASA. "List of Fellows". Frosch, Robert Alan (1952). Magnetic hyperfine structure in diatomic molecules (Ph.D.). Columbia University. OCLC 35805315...
    8 KB (675 words) - 05:27, 4 April 2024
  • Thumbnail for Positronium
    orbital state of positronium is 1S, and like with hydrogen, it has a hyperfine structure arising from the relative orientations of the spins of the electron...
    22 KB (2,616 words) - 19:22, 11 August 2024
  • complicated by spin and quantum vacuum effects to produce fine structure and hyperfine structure. Nevertheless, the Bohr radius formula remains central in...
    7 KB (1,014 words) - 21:51, 31 March 2024
  • Thumbnail for Derek Jackson
    a nuclear magnetic spin using atomic spectroscopy to measure the hyperfine structure of caesium. His scientific research at Oxford did not, however, interfere...
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  • Thumbnail for Discovery of the neutron
    1926 that the observed hyperfine structure of atomic spectra was inconsistent with the proton–electron hypothesis. This structure is caused by the influence...
    74 KB (8,527 words) - 23:22, 19 February 2024
  • atomic physics experiments on atomic species with poorly-resolved hyperfine structure, like isotopes of lithium and potassium, often utilize gray molasses...
    22 KB (2,409 words) - 16:28, 28 May 2024
  • Thumbnail for Vern Ehlers
    Vernon; Kabasakal, Yurdanur; Shugart, Howard; Tezer, Orhan (1968). "Hyperfine Structure of 67Ga and 72Ga". Physical Review. 176 (1): 25–42. Bibcode:1968PhRv...
    17 KB (1,189 words) - 11:47, 3 July 2024
  • magnetic dipole moment Electron electric dipole moment Fine structure Hyperfine structure "2022 CODATA Value: electron magnetic moment". The NIST Reference...
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  • Thumbnail for Hydrogen spectral series
    lines correspond to much rarer atomic events such as hyperfine transitions. The fine structure also results in single spectral lines appearing as two...
    19 KB (1,910 words) - 00:34, 16 July 2024
  • and S. A. Altshuler in the Soviet Union (1934) from studies of the hyperfine structure of atomic spectra. Although Tamm and Altshuler's estimate had the...
    52 KB (5,958 words) - 21:24, 1 June 2024
  • Thumbnail for Nuclear clock
    probe the successful laser excitation of the nuclear state via the hyperfine-structure shift induced into the electronic shell due to the different nuclear...
    50 KB (5,362 words) - 17:48, 15 August 2024
  • Thumbnail for Sodium
    Sodium (category Chemical elements with body-centered cubic structure)
    the 3p orbital split the D line into two, at 589.0 and 589.6 nm; hyperfine structures involving both orbitals cause many more lines. Twenty isotopes of...
    70 KB (8,195 words) - 18:55, 18 August 2024
  • as the magnetic dipole moment of leptons, the Lamb shift, and the hyperfine structure of bound lepton pairs, such as muonium and positronium. Since photons...
    107 KB (11,683 words) - 10:54, 17 August 2024
  • Schrödinger equation". Atomic spectroscopy. Introduction of theory to Hyperfine Structure. p. 274. ISBN 978-0-387-25573-6. Tennyson, Jonathan (2005). Astronomical...
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  • in chemistry Hydrogen forward scattering, in materials science Hyperfine structure, in physics French Frigate Shoals Airport, in Hawaii, United States...
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  • Thumbnail for Rainer Weiss
    1016/0031-9163(62)90420-1. Weiss, Rainer (1963). "Stark Effect and Hyperfine Structure of Hydrogen Fluoride". Phys. Rev. 131 (2): 659–665. Bibcode:1963PhRv...
    28 KB (2,482 words) - 14:53, 24 June 2024
  • Thumbnail for Antihydrogen
    the presence of a magnetic field the 1s–2s transition splits into two hyperfine transitions with slightly different frequencies. The team calculated the...
    21 KB (2,219 words) - 20:17, 14 August 2024