2018 Table of static dipole polarizabilities of the neutral elements in the periodic table

Schwerdtfeger, Peter; Nagle, Jeffrey K.

doi:10.1080/00268976.2018.1535143

Cited by 271 publications

(199 citation statements)

References 227 publications

Supporting

Mentioning

191

Contrasting

Order By: Relevance

“…The interaction constant W S for the effective T,Pviolating interaction in molecules is defined by the fol- a Recommended values from Ref. [78] lowing expression:…”

Section: Molecular Tp-violating Spin-axis Interaction Constantsmentioning

confidence: 99%

Electric dipole moments of atoms and molecules produced by enhanced nuclear Schiff moments

Flambaum

Dzuba

2020

Phys. Rev. A

View full text Add to dashboard Cite

We perform calculations of the CP-violating atomic and molecular electric dipole moments (EDM) induced by the interaction of the nuclear Schiff moments with electrons. EDM of atoms Eu, Dy, Gd, Ac, Th, Pa, U, Np and Pu are of special interest since they have isotopes with strongly enhanced nuclear Schiff moments caused by the octupole nuclear deformation or soft octupole vibration mode.These atoms have open 4f or 5f shells making the calculations complicated. We use our special version of the configuration interaction method combined with the many-body perturbation theory method adopted for open f -shell case. To validate the method we perform similar calculations for simpler atoms (Xe, Hg, Tl + , Pb, Pb ++ , Rn, Ra) where some earlier results are available. In addition we present the estimates of the CP-violating nuclear spin -molecular axis interaction constants for molecules which may be of experimental interest including AcF, AcN, AcO + , EuN, EuO + , ThO, PbO and TlF. We also present updated values of the nuclear Schiff moments and atomic and molecular EDM expressed in terms of the CP-violating π-meson -nucleon interaction constantsḡ0, g1,ḡ2, QCD parameterθ and quark chromo-EDMs. The results may be used to test CP-violation theories and search for axion dark matter in atomic, molecular and solid state experiments.1 Nuclear EDM and magnetic quadrupole produced by the T,Podd nuclear forces are also enhanced due to an opposite parity level with the same spin close to the ground state [9,15]. Collective enhancement of the magnetic quadrupole moments in deformed nuclei have been demonstrated in [16].9 Some older molecular calculations presented constant X = W S /6. Table I to the energy shift W T,P = W S S J J · n gives for the fully polarised molecule the energy difference between the J z = J and J z = −J states: Substitution of the Schiff moment from

show abstract

“…The interaction constant W S for the effective T,Pviolating interaction in molecules is defined by the fol- a Recommended values from Ref. [78] lowing expression:…”

Section: Molecular Tp-violating Spin-axis Interaction Constantsmentioning

confidence: 99%

Electric dipole moments of atoms and molecules produced by enhanced nuclear Schiff moments

Flambaum

Dzuba

2020

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…By analogy with the socalled survival factor introduced for dissociative recombination studies by Strömholm et al (1995), we can then write where a and f are adjustable parameters. Putting together everything so far, we have Here, α D is the static dipole polarizability of D. This is given by Schwerdtfeger & Nagle (2019) as  a p = ( ) a 9 8 D 0 3 0 , where a 0 is the Bohr radius and ò 0 is the vacuum permittivity.…”

Section: Cross-section Model For the Experimental Resultsmentioning

confidence: 99%

One-colour (∼220 nm) resonance-enhanced (S₁ − S₀) multi-photon dissociation of acetylene: probe of the C₂ A¹ Π_u − X¹ Σ⁺_g band by frequency-modulation spectroscopy

Jiang

Liévin

et al. 2020

Molecular Physics

View full text Add to dashboard Cite

Deuterated molecules are important chemical tracers of prestellar and protostellar cores. Up to now, the titular reaction has been assumed to contribute to the generation of these deuterated molecules. We have measured the merged-beams rate coefficient for this reaction as a function of the relative collision energy in the range of about 10 meV-10 eV. By varying the internal temperature of the reacting + H 3 molecules, we found indications for the existence of a reaction barrier. We have performed detailed theoretical calculations for the zero-point-corrected energy profile of the reaction and determined a new value for the barrier height of ≈68 meV. Furthermore, we have calculated the tunneling probability through the barrier. Our experimental and theoretical results show that the reaction is essentially closed at astrochemically relevant temperatures. We derive a thermal rate coefficient of <1×10 −12 cm 3 s −1 for temperatures below 75 K with tunneling effects included and below 155 K without tunneling.

show abstract

“…The sensitivity of the schlieren method can be estimated by setting the deflection angle of the rays on the optical inhomogeneity a = l (dn/dx) (where dn/dx is the gradient of the refractive index in the perpendicular direction; l is the optical path in the phase inhomogeneity, l = 3 cm (target's width)) equal to half the angular size of the diaphragm: ad = d/F (where d = 1.2 mm is the diameter of the aperture opening; F = 400 mm is the focal length of the lens in front of the diaphragm) and using the ratio [19] n -1 = 2paaN, which relates the gas concentration to its refractive index (aa is the atomic polarizability, with [27]). Then, the minimum transverse gradient of the gas component concentration recorded by the Schlieren method is ~ 2×10 20 cm -4 for neon and 0.5×10 20 cm -4 for argon.…”

Section: Fig2 Experimental Setupmentioning

confidence: 99%

Laser holographic interferometry of short ultraviolet radiation with high power density interaction with condensed metters

Pavlov¹,

Protasov²,

Telekh³

et al. 2019

View full text Add to dashboard Cite

The dynamics and macrostructure of near-surface vapor-plasma fluxes arising from condensed substances evaporation in the field of broadband radiation of the UV-VUV spectrum range are studied using double-exposure laser holographic interferometry and schlieren photography (the Toepler scheme in the light field mode). The experimental setup was created on the basis of the unique scientific facility "Beam-M". Broadband UV and VUV radiation was generated by a plasma-dynamic emitting discharge of an end geometry coaxial erosion-type magnetoplasma compressor with an ablating fluoroplastic plasma-forming insulating sleeve in a gas. To control the emission spectrum of the discharge, gas filters were used (Ar, Ne, air, Ne mixture with 5% air). The emitter operated in the following mode: U = 20 kV, the stored energy W = 3.6 kJ, the energy input to the discharge was up to 3.2 kJ, with 30% in the first half-cycle of current, the maximum current is 160 kA, the half-cycle of discharge is 6 μs; the total radiation energy from the discharge was 1.0-1.2 kJ; the fraction of radiation in the VUV range of the spectrum was about 50% in Ne (hν ≤ 20 eV) and about 45% in Ar (hν ≤ 16 eV). It was shown that the implemented scheme of electromagnetic compatibility and protection ensures reliable synchronization of the electric discharge circuit and optical diagnostics components in the whole range of discharge characteristics. Optical diagnostics of near-surface gas-plasma flows was implemented on the basis of a second harmonic (532 nm) of a solid-state Nd:YAG laser (Solar LQ-115), its versatility was shown for studying various pulsed plasma processes with characteristic changes in gas concentrations of about 10 17-10 18 cm-3 and gradients of 10 19-10 20 cm-3. On the schlieren-pictures and interferograms, the zones characteristic of the studied type of radiation effects on materials were recorded: the gas-dynamic evaporation mode was realized (plasma piston mode), there was a shock wave in the gas, the contact boundary between the shock-compressed gas and the vapor plasma. The analysis of interferograms indicates that the regime of developed evaporation was preceded by a regime of diffusion evaporation. The use of extended samples allowed us to observe successive stages in the development of gas-dynamic perturbations during evaporation (due to the different distances between the target areas and the discharge). On the interferograms above the target, at different distances from the source of irradiation, 3 types of gas-dynamic perturbations were observed: acoustic wave, simple wave (Riemann wave), and shock wave. The effect of the energy characteristics of the discharge and the spectral composition of the radiation on the evaporation pattern was experimentally shown.

show abstract

2018 Table of static dipole polarizabilities of the neutral elements in the periodic table

Abstract: A 2018 update of the most accurate calculated and experimental static dipole polarizabilities of the neutral atoms in the Periodic Table from nuclear charge Z = 1 to 120 is given. Periodic trends are analyzed and discussed.

Cited by 271 publications

References 227 publications

Electric dipole moments of atoms and molecules produced by enhanced nuclear Schiff moments

Electric dipole moments of atoms and molecules produced by enhanced nuclear Schiff moments

One-colour (∼220 nm) resonance-enhanced (S₁ − S₀) multi-photon dissociation of acetylene: probe of the C₂ A¹ Π_u − X¹ Σ⁺_g band by frequency-modulation spectroscopy

Laser holographic interferometry of short ultraviolet radiation with high power density interaction with condensed metters

Contact Info

Product

Resources

About

2018 Table of static dipole polarizabilities of the neutral elements in the periodic table

Abstract: A 2018 update of the most accurate calculated and experimental static dipole polarizabilities of the neutral atoms in the Periodic Table from nuclear charge Z = 1 to 120 is given. Periodic trends are analyzed and discussed.

Cited by 271 publications

References 227 publications

Electric dipole moments of atoms and molecules produced by enhanced nuclear Schiff moments

Electric dipole moments of atoms and molecules produced by enhanced nuclear Schiff moments

One-colour (∼220 nm) resonance-enhanced (S1 − S0) multi-photon dissociation of acetylene: probe of the C2 A1 Πu − X1 Σ+g band by frequency-modulation spectroscopy

Laser holographic interferometry of short ultraviolet radiation with high power density interaction with condensed metters

Contact Info

Product

Resources

About

One-colour (∼220 nm) resonance-enhanced (S₁ − S₀) multi-photon dissociation of acetylene: probe of the C₂ A¹ Π_u − X¹ Σ⁺_g band by frequency-modulation spectroscopy