Interferometric measurements of the dipole polarizability α of molecules between 300 K and 1100 K

Hohm, Uwe; Kerl, K.

doi:10.1080/00268979000100611

Cited by 117 publications

(44 citation statements)

References 46 publications

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“…Our pseudostate yielded a dipole polarizability of 17.3 a 3 0 , where a 0 = 0.529 × 10 −10 m is the Bohr radius. This is in very good agreement with the most recent recommended value of 17.075 a 3 0 [11,12]. We then used the recently developed DBSR program [13] to solve the (N +1)-electron collision problem.…”

Section: Theorysupporting

confidence: 60%

High-resolution experiments andB-splineR-matrix calculations for elastic electron scattering from krypton

2011

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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 about 13 meV at scattering angles between 0 • and 180 • . Excellent agreement is obtained between our experimental data and predictions from a fully relativistic Dirac B-spline R-matrix (close-coupling) model that accounts for the atomic dipole polarizability through a specially designed pseudostate.

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Section: Theorysupporting

confidence: 60%

High-resolution experiments andB-splineR-matrix calculations for elastic electron scattering from krypton

2011

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“…The expression (6) becomes simpler for Xenon taking into account the fact that this gas has no permanent dipole moment. It can be shown [16] that this reflects into an A R (ω, T ) → A R (ω), no longer depending on temperature and:…”

Section: Properties Of Lxe Of Interest For a Scintillation Calorimetermentioning

confidence: 99%

“…While experimental measurements of the λ's and n in LXe are scanty and suffer from problems, better information is available for gaseous Xe at various pressures both for visible and VUV light [16,17,18,19].…”

Section: Properties Of Lxe Of Interest For a Scintillation Calorimetermentioning

confidence: 99%

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Liquid xenon scintillation calorimetry and Xe optical properties

Baldini

Bemporad

Cei

et al. 2006

IEEE Trans. Dielect. Electr. Insul.

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The optical properties of LXe in the vacuum ultra violet (VUV), determining the performance of a scintillation calorimeter, are discussed in detail. The available data, measured in a wider spectral region from visible to UV light, and in a large range of Xe densities, from gas to liquid, are examined. It is shown that this information can be used for deriving the LXe optical properties in the VUV. A comparison is made with the few direct measurements in LXe for VUV light resulting from the LXe excitation by ionizing particles. A useful relation is obtained which connects the Rayleigh scattering length to the refractive index in LXe.

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“…Our state-of-the-art calculations show that the electron-gaslike outer shell of Og, resulting in α ¼ 57.98 a:u:, is much easier to polarize as compared to xenon (α ¼ 27.815 a:u: [59]) or radon (α ¼ 33.18 a:u: [60] Nucleon localization.-For the nuclear calculations, we employ the nuclear density functional theory (DFT) [62] with carefully optimized global Skyrme energy density functionals UNEDF1 [63] and SV-min [64]. Pairing is of minor importance in the closed-shell nuclei considered.…”

mentioning

confidence: 99%

Heaviest Element Has Unusual Shell Structure

Wilson

2018

Physics

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Fermion localization functions are used to discuss electronic and nucleonic shell structure effects in the superheavy element oganesson, the heaviest element discovered to date. Spin-orbit splitting in the 7p electronic shell becomes so large (∼10 eV) that Og is expected to show uniform-gas-like behavior in the valence region with a rather large dipole polarizability compared to the lighter rare gas elements. The nucleon localization in Og is also predicted to undergo a transition to the Thomas-Fermi gas behavior in the valence region. This effect, particularly strong for neutrons, is due to the high density of single-particle orbitals. 118 Og, 0.89 þ1.07 −0.31 ms, is too short for chemical "oneatom-at-a-time" studies; hence, its chemical properties must be inferred from advanced atomic calculations based on relativistic quantum theory [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. According to these, Og has a closed-shell ½Rn 5f 14 6d 10 7s 2 7p 6 configuration [13,20,21], with a very large spin-orbit splitting of the 7p shell (9.920 eV at the Dirac-Breit-Hartree-Fock and 10.125 eV at the Fock-space coupled-cluster level; see below). In contrast to its electronic configuration (Og completes the seventh period of the periodic table), it is not expected to behave like a typical rare gas of group 18. For example, the relativistic 7p 3=2 expansion and the relativistic 8s contraction make Og the first rare gas element with a positive electron affinity of 0.064 eV [10,16,22]. This result includes a substantial quantum electrodynamic correction of 0.006 eV [16].Nuclear structure calculations predict 294 Og to be a deformed nucleus [23][24][25][26], eight neutrons away from the next neutron shell closure at 302 Og (N ¼ 184) [27][28][29][30][31][32]. A new factor impacting properties of superheavy nuclei is the strong electrostatic repulsion: The Coulomb force in superheavy nuclei cannot be treated as a small perturbation atop the dominating nuclear interaction; the resulting polarization effects due to Coulomb frustration are expected to influence significantly the proton and neutron

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Interferometric measurements of the dipole polarizability α of molecules between 300 K and 1100 K

Cited by 117 publications

References 46 publications

High-resolution experiments andB-splineR-matrix calculations for elastic electron scattering from krypton

High-resolution experiments andB-splineR-matrix calculations for elastic electron scattering from krypton

Liquid xenon scintillation calorimetry and Xe optical properties

Heaviest Element Has Unusual Shell Structure

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