This paper analyses the effect of the mean flow field, source wavelength and array length on the focal-resolution characteristics of an idealised lateral quadrupole source obtained using aeroacoustic Time-Reversal (TR). The TR simulations were implemented by numerically solving the 2-D Linearised Euler Equations (LEE) and enforcing the time-reversed acoustic pressure (stored during forward simu...

We have measured the pt-integrated quadrupole component of two-particle azimuth correlations (related to quantity v2, denoted in this case by v2{2D}) via two-dimensional (2D) angular autocorrelations on (η, φ) for unidentified hadrons in Au-Au collisions at 62 and 200 GeV. The 2D autocorrelation provides a method to remove non-quadrupole contributions to v2 (conventionally termed “nonflow”) und...

In view of the adopted modi ed design for the 1.3 GeV compatible accumulator ring of the SNS [1], complementary studies have been undertaken, in order to justify the need of higheld chromatic sextupoles for chromaticity correction. Furthermore, as these chromatic sextupoles introduce a rst order quadrupole \feed-down" e ect, the trim quadrupole elements speci cations had to be reviewed in order...

in many signal processing applications, an appropriate measure to comparetwo signals plays a fundamental role in both implementing the algorithm andevaluating its performance. several techniques have been introduced in literature assimilarity measures. however, the existing measures are often either impractical forsome applications or they have unsatisfactory results in some other applications....

It is shown that the "two-libron" lines in the Raman spectrum of solid hydrogen result from the large cubic anharmonicity of the quadrupole-quadrupole Hamiltonian. A localized picture is used to describe the interaction of two librational excitations on neighboring molecules, and dynamic interactions with other molecules are treated perturbatively. In this approximation the average single-libro...

Abstract Pulsar timing arrays (PTAs) are searching for nanohertz-frequency gravitational waves (GWs) through cross-correlation of pulse arrival times from a set radio pulsars. PTAs have relied on frequency-shift formula the pulse, where planar GWs usually assumed. Phase corrections due to wave front curvature been recently discussed. In this paper, and timing-residual formulae derived with full...

We report $^{121/123}$Sb nuclear quadrupole resonance (NQR) and $^{51}$V magnetic (NMR) measurements on kagome metal CsV$_3$Sb$_5$ with $T_{\rm c}=2.5$ K. Both NMR spectra NQR split after a charge density wave (CDW) transition, which demonstrates commensurate CDW state. The coexistence of the high temperature phase between $91$ K $94$ manifests that it is first order transition. At low temperat...

From a consideration of odd-even intramolecular electron transfer processes in octahedrally co-ordinated transition metal complexes, two relationships have been derived. The first correlation describes 71 —> y3 optical electron transfer bands of the complexes K20sC l6 , K2IrCl6 , K2PtCl6 , K2PtCl4 as a function of the respective 35C1 nuclear quadrupole coupling constants. The second rela­ tions...

Atomic quadrupole moments and hyperfine constants of the metastable D3/2,5/2 states of Ca +, Sr+, Ba+, Yb+, and Hg+ are calculated by the multiconfiguration Dirac-Hartree-Fock and relativistic configuration-interaction methods. For Hg+, the configuration is 5d96s2. For the other ions, the configuration consists of a single d-electron outside a set of closed shells. Current interest in the quadr...

An interaction −χQ ·Q(1+B~τ(1) · ~τ(2)) is used in a shell model calculation for 10Be. Whereas for B = 0 the 21 state is two-fold degenerate, introducing a negative B causes an ‘isovector’ 2+ state to come down to zero energy at B = −0.67 and an S = 1 L = 1 triplet (J = 0+, 1+, 2+) to come down to zero energy at B = −0.73. These are undesirable properties, but a large negative B is apparently n...