Results 21 to 30 of about 120,508 (261)
Quadrupole-quadrupole gravitational waves [PDF]
Classical and Quantum Gravity, 1998 This paper investigates the non-linear self-interaction of quadrupole gravitational waves generated by an isolated system. The vacuum Einstein field equations are integrated in the region exterior to the system by means of a post-Minkowskian algorithm. Specializing in the quadrupole-quadrupole interaction (at the quadratic non-linear order), we recover
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New Journal of Physics, 2020 Multipole interferences have attracted a lot of interests in last decade due to extraordinary performance on beam control and scattering shaping. However, most of previous works focused on the dipole-based interferences while the quadrupole modes and ...
Chang Liu +8 more
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Accretion disks around a mass with quadrupole QUADRUPOLE
Bulletin of Kazakh Leading Academy of Architecture and Construction, 2021 In this work, we consider the exterior static axisymmetric gravitational of compact objects. We investigate the properties of the q-metric which is the simplest generalization of the Schwarzschild solution that contains a quadrupole parameter. The geodesic line equation is derived from the field equations and the orbits of the test particle are ...
S. Toktarbay +3 more
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AIP Advances, 2022 A quadrupole mass filter consists of four equidistant parallel rods. Each opposing rod pair is connected electrically, and direct current (DC) and radio frequency alternating current (AC) potentials are applied between one pair of rods and the other. For
Kyu-Ha Jang +5 more
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The quadrupole-quadrupole interaction and the inverted pairing
Physics Letters B, 1996 Abstract We present evidence that excitations induced by the quadrupole-quadrupole interaction are equivalent to an inverted surace-delta interaction whose largest multipole-pairing component is attractive and has maximum spin. This technical recognition led one to isolate the system's intrinsic energies from the rest in the laboratory frame, trace ...
Hsi-Tseng Chen +3 more
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Calculation of electron-optical characteristics of a quadrupole-cylindrical field
Қарағанды университетінің хабаршысы. Физика сериясы, 2019 The article is devoted to the calculation and analysis of electron-optical characteristics of a electrostatic quadrupole-cylindrical field. The object of the research is the development of an energy analyzer based on a quadrupole-cylindrical field.
A.O. Saulebekov +2 more
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Electron-scale nested quadrupole Hall field in Cluster observations of magnetic reconnection [PDF]
Annales Geophysicae, 2015 This paper presents the first evidence of a new and unique feature of spontaneous reconnection at multiple sites in electron current sheet, viz. a "nested quadrupole" structure of the Hall field at electron scales, in Cluster observations.
N. Jain, A. S. Sharma
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Meikuang Anquan, 2023 In order to study the feasibility of mine DC quadrupole device in advance detection of tunneling roadway, a 3D geoelectric model of roadway advance detection is established, and ANSYS is used to simulate quadrupole device for data acquisition; the ratio
GAO Weifu +4 more
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Boundary conditions for quadrupolar metamaterials
New Journal of Physics, 2014 One of the long-standing problems in effective medium theories is using the knowledge of the bulk material response to predict the behavior of the electromagnetic fields at the material boundaries.
Mário G Silveirinha
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Computation, 2018 The program diagonalizes the Geometric Collective Model (Bohr Hamiltonian) with generalized Gneuss–Greiner potential with terms up to the sixth power in β . In nuclear physics, the Bohr–Mottelson model with later extensions into the
Fabrizio Ferrari-Ruffino +1 more
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