A phenomenological model of a system of antiferromagnetically correlated spins is shown to give a good quantitative description of NMR, nuclear-quadrupole-resonance, and Knight-shift measurements on yttrium, planar copper, and planar oxygen sites in YBa2Cu307. The antiferromagnetic correlation length is estimated to be-2. 5 lattice constants at T =100 K. The temperature dependence of the correl...

We derive large-amplitude collective equations of motion from the variational principle for the time-dependent Schrödinger equation. These equations reduce to the well-known diabatic formulas for vibrational frequencies in the small amplitude limit. The finite amplitude expression allows departures from harmonic behavior of giant resonances to be simply estimated. The relative shift of the seco...

Gravitational-wave tails are linear waves that backscatter on the curvature of space-time generated by total mass-energy source. The non-linear memory effect arises from gravitational sourced stress-energy distribution themselves. These two effects due to quadratic multipolar interactions (mass-quadrupole and quadrupole-quadrupole) well known. Also known themselves (cubic "tails-of-tails") tail...

We report 121 Sb nuclear quadrupole resonance (NQR) measurements on kagome superconductor CsV 3 5 with T c = 2.5 K. NQR spectra split after a charge density wave (CDW) transition at 94 K, which demonstrates commensurate CDW state. The coexistence of the high temperature phase and between 91 K manifests that it is first order transition. exhibits tri-hexagonal deformation lateral shift adjacent ...

theoretical investigations on the characteristics of the nuclear quadrupole resonance and the influence of the magnetic effect on it have been carried out. the magnetic dipole effect on the quadrupole resonance for the two spins i and i with different values oft) and e has been studied. the energy levels and their transition probabilities are presented with their corresponding spectra. the firs...

Mass analysis with islands of stability has been investigated with three linear quadrupole mass filters: two with 4% added hexapole fields constructed with equal diameter (quadrupole 4A) and unequal diameter (quadrupole 4B) rods, and a conventional round-rod quadrupole that has apparently been slightly damaged. Islands are formed by applying auxiliary quadrupole excitation. With the Mathieu par...

Abstract Understanding acoustic field characteristics in the cased hole accompanied by stress is important for acoustical logging. This study investigates behavior of multipole wavefields a with perfect combination casing, cement, and formation under borehole-axial stress. The can be equivalent to transversely isotropic medium when uniaxial acts on based nonlinear elasticity theory. effect axia...