CERN Accelerating science

Preprints

Последно добавени:
2015-04-24
07:49
Scheme for Low Energy Beam Transport with a non-neutralized section / Shemyakin, A ; Prost, L
A typical Low Energy Beam Transport (LEBT) design relies on dynamics with nearly complete beam space charge neutralization over the entire length of the LEBT. [...]
arXiv:1504.06302.
- 2015.
Preprint

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2015-04-24
07:49
Intensity correlations between reflected and transmitted speckle patterns / Fayard, N ; Cazé, A ; Pierrat, R ; Carminati, R
We study theoretically the spatial correlations between the intensities measured at the input and output planes of a disordered scattering medium. [...]
arXiv:1504.06267.
- 2015.
Preprint

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2015-04-24
07:49
Configuration Interaction with Antisymmetrized Geminal Powers / Uemura, Wataru ; Kasamatsu, Shusuke ; Sugino, Osamu
To avoid the combinatorial computational cost of configuration interaction (CI), we have previously introduced the symmetric tensor decomposition CI (STD-CI) method, where we take advantage of the antisymmetric nature of the electronic wave function and express the CI coefficients compactly as a series of Kronecker product states (STD series) [W. [...]
arXiv:1504.06250.
- 2015. - 14 p.
Preprint

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2015-04-24
07:49
Mathematical Modeling and Stability of Predator-Prey Systems / Sobrinho, Altair Santos de Oliveira ; de Oliveira, Camila Fogaça ; Kita, Carolina Massae ; Natti, Érica Regina Takano ; Natti, Paulo Laerte
This work investigated the stability of some Lotka-Volterra type models. [...]
arXiv:1504.06244.
- 2015. - 15 p.
Preprint

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2015-04-24
07:49
Improving detection of influential nodes in complex networks / Sheikhahmadi, Amir ; Nematbakhsh, Mohammad A ; Shokrollahi, Arman
Recently an increasing amount of research is devoted to the question of how the most influential nodes (seeds) can be found effectively in a complex network. [...]
arXiv:1504.06236.
- 2015. - 17 p.
Preprint

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2015-04-24
07:49
The Side-Effects of the Space Charge Field Introduced by Hollow Electron Beam in the Electron Cooler of CSRm / Tang, Mei-Tang ; Yang, Xiao-Dong ; Mao, Li-Jun ; Li, Jie ; Ma, Xiao-Ming ; Yan, Tai-Lai ; Zheng, Wen-Heng ; Zhao, He ; Wu, Bo ; Wang, Geng et al.
Electron cooler is used to improve the quality of the beam in synchrotron, however it also introduces nonlinear electromagnetic field, which cause tuneshift, tunespread and may drive resonances leading to beam loss. [...]
arXiv:1504.06233.
- 2015.
Preprint

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2015-04-24
07:49
Centrifugal instability of Stokes layers in crossflow: the case of a forced cylinder wake / D'Adamo, Juan ; Godoy-Diana, Ramiro ; Wesfreid, José Eduardo
The wake flow around a circular cylinder at $Re\approx100$ performing rotatory oscillations has been thoroughly discussed in the literature, mostly focusing on the modifications to the natural B\'enard-von K\'arm\'an vortex street that result from the forced shedding modes locked to the rotatory oscillation frequency. [...]
arXiv:1504.06229.
- 2015. - 18 p.
Preprint

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2015-04-24
07:49
A quantum cascade laser-based mid-IR frequency metrology system with ultra-narrow linewidth and $1\times 10^{-13}$-level absolute frequency stability / Hansen, Michael G ; Magoulakis, Evangelos ; Chen, Qun-Feng ; Ernsting, Ingo ; Schiller, Stephan
We demonstrate a powerful tool for high-resolution mid-IR spectroscopy and frequency metrology with quantum cascade lasers (QCLs). [...]
arXiv:1504.06216.
- 2015.
Preprint

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2015-04-24
07:49
Octonacci Photonic Quasicrystals / Brand, E R ; Costa, C H ; Vasconcelos, M S ; Anselmo, D H A L ; Mello, V D
We study theoretically the transmission spectra in one-dimensional photonic quasicrystals, made up of SiO$_2$($A$) and TiO$_2$($B$) materials, organized following the Octonacci sequence, where the $n$th-stage of the multilayer $S_{n}$ is given by the rule $S_{n}=S_{n-1}S_{n-2}S_{n-1}$, for $n\geq 3$ and with $S_{1}=A$ and $S_{2}=B$ [...]
arXiv:1504.06214.
- 2015.
Preprint

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2015-04-24
07:49
Order Reduction of the Radiative Heat Transfer Model for the Simulation of Plasma Arcs / Fagiano, Lorenzo ; Gati, Rudolf
An approach to derive low-complexity models describing thermal radiation for the sake of simulating the behavior of electric arcs in switchgear systems is presented. [...]
arXiv:1504.06204.
- 2015.
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