Results 61 to 70 of about 2,267,299 (343)

Layer-dependent magnetic phase diagram in Fe n GeTe2 (3 ≤ n ≤ 7) ultrathin films

open access: yesCommunications Physics, 2022
2D magnetism offers the prospect of ordered and controllable magnetic states at reduced dimensions and there is a desire to obtain materials which can realise these properties at room temperature.
Qinxi Liu   +6 more
doaj   +1 more source

Characterization of vector diffraction-free beams

open access: yes, 2011
It is observed that a constant unit vector denoted by $\mathbf I$ is needed to characterize a complete orthonormal set of vector diffraction-free beams. The previously found diffraction-free beams are shown to be included as special cases. The $\mathbf I$
Bouchal   +14 more
core   +1 more source

Airy-Gauss beams and their transformation by paraxial optical systems [PDF]

open access: yes, 2007
We introduce the generalized Airy-Gauss (AiG) beams and analyze their propagation through optical systems described by ABCD matrices with complex elements in general. The transverse mathematical structure of the AiG beams is form-invariant under paraxial
Bandres, Miguel A.   +1 more
core   +1 more source

Anomalous beam diffusion near beam-beam synchrobetatron resonances [PDF]

open access: yesPhysical Review Special Topics - Accelerators and Beams, 2012
23 pages, 12 ...
openaire   +3 more sources

Instabilities of Internal Gravity Wave Beams [PDF]

open access: yes, 2017
Internal gravity waves play a primary role in geophysical fluids: They contribute significantly to mixing in the ocean, and they redistribute energy and momentum in the middle atmosphere. Until recently, most studies were focused on plane wave solutions.
T. Dauxois   +3 more
semanticscholar   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Enhanced production of 60Fe in massive stars

open access: yesNature Communications
Massive stars are a major source of chemical elements in the cosmos, ejecting freshly produced nuclei through winds and core-collapse supernova explosions into the interstellar medium.
A. Spyrou   +25 more
doaj   +1 more source

Experimental and Numerical Study of Strengthening Prestressed Reinforced Concrete Beams Using Different Techniques

open access: yesBuildings, 2023
This study aimed to evaluate the static response of prestressed reinforced concrete beams strengthened in their flexure and shear properties using different strengthening techniques, steel plates, and externally bonded woven carbon fiber fabric (WCFF ...
Ahmed S. Eisa   +4 more
doaj   +1 more source

Nonparaxial Mathieu and Weber accelerating beams

open access: yes, 2012
We demonstrate both theoretically and experimentally nonparaxial Mathieu and Weber accelerating beams, generalizing the concept of previously found accelerating beams. We show that such beams bend into large angles along circular, elliptical or parabolic
Cannan, Drake   +7 more
core   +1 more source

Beam-Beam Interactions [PDF]

open access: yes, 2003
At the interaction point of a particle accelerator, various phenomena occur which are known as beam-beam effects. Incident bunches of electrons (or positrons) experience strong electromagnetic fields from the opposing bunches, which leads to electron deflection, beamstrahlung and the creation of electron/positron pairs and hadrons due to two-photon ...
openaire   +1 more source

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