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Review on TNSA diagnostics and recent developments at SPARC LAB

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High Power Laser Science and Engineering 2019年第3期7卷 228-239页

作者： Fabrizio Bisesto Mario Galletti Maria Pia Anania Massimo Ferraro Riccardo Pompili Mordechai Botton Elad Schleifer arie zigler INFN-LNF Via Enrico Fermi 4000044 FrascatiItaly Central Laser Facility Science and Technology Facilities CouncilRutherford Appleton LaboratoryHarwell Science and Innovation CampusDidcot 0X11 OQXUK GoLP Instituto de Plasmas e Fusao Nuclear Instituto Superior TecnicoUniversidade de LisboaAv.Rovisco Pais 1049-001 LisbonPortugal Racah Institute of Physics Hebrew University91904 JerusalemIsrael

Interaction between high-intensity lasers with solid targets is the key process in a wide range of novel laser-based particle accelerator schemes,as well as electromagnetic radiation *** to all the processes is the generation of femtosecond pulses of relativistic electrons emitted from the targets as forerunners of the later-time principal products of the interaction *** this paper,some diagnostics employed in laser–solid matter interaction experiments related to electrons,protons,ions,electromagnetic pulses(EMPs)and X-rays are ***,we present our experimental study regarding fast electrons and EMPs utilizing a femtosecond-resolution detector previously adopted only in accelerator facilities.

关键词： high power laser laser-plasma interaction pulsed electric field diagnostic ultra-short high-intensity laser pulses

Simultaneous observation of ultrafast electron and proton beams in TNSA

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High Power Laser Science and Engineering 2020年第2期8卷 147-152页

作者： Fabrizio Bisesto Mario Galletti Maria Pia Anania Gemma Costa Massimo Ferrario Riccardo Pompili arie zigler Fabrizio Consoli Mattia Cipriani Martina Salvadori Claudio Verona INFN-LNF Via Enrico Fermi 5400044 FrascatiItaly Central Laser Facility Science and Technology Facilities CouncilRutherford Appleton LaboratoryHarwell Science and Innovation CampusDidcot OX110QXEngland GoLP Instituto de Plasmas e Fusao Nuclear Instituto Superior TecnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisbonPortugal Racah Institute of Physics Hebrew University91904 JerusalemIsrael ENEA Fusion and Technologies for Nuclear Safety and Security Department C.R.FrascatiVia E.Fermi 4500044 FrascatiItaly Universita’di Roma La Sapienza Piazzale Aldo Moro 500185 RomaItaly INRS-EMT VarennesQuebecCanada University of Rome“Tor Vergata” Industrial Engineering DepartmentVia Cracovia 5000133 RomaItaly

The interaction of ultra-intense high-power lasers with solid-state targets has been largely studied for the past 20 years as a future compact proton and ion ***,the huge potential established on the target surface by the escaping electrons provides accelerating gradients of TV/*** process,called target normal sheath acceleration,involves a large number of phenomena and is very difficult to study because of the picosecond scale *** the SPARC LAB Test Facility,the high-power laser FLAME is employed in experiments with solid targets,aiming to study possible correlations between ballistic fast electrons and accelerated *** detail,we have installed in the interaction chamber two different diagnostics,each one devoted to characterizing one *** first relies on electro-optic sampling,and it has been adopted to completely characterize the ultrafast electron *** the other hand,a time-of-flight detector,based on chemical-vapour-deposited diamond,has allowed us to retrieve the proton energy *** this work,we report preliminary studies about simultaneous temporal resolved measurements of both the first forerunner escaping electrons and the accelerated protons for different laser parameters.

关键词： electro-optic sampling diagnostics high-power laser laser-plasma interaction time-of-flight diagnostics target normal sheath acceleration ultrashort high-intensity laser pulses

Storing and retrieving multiple images in 3D nonlinear photonic crystals

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Light(Science & Applications) 2021年第11期10卷 2019-2021页

作者： Ady arie School of Electrical Engineering Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv69978Israel

A nonlinear hologram enables to record the amplitude and phase of a waveform by spatially modulating the second order nonlinear coefficient,so that when a pump laser illuminates it,this waveform is reconstructed at the second harmonic *** concept was now extended to enable the generation of multiple waveforms from a single hologram,with potential applications in high density storage,quantum optics,and optical microscopy.

关键词： nonlinear enable optics

The geometric phase in nonlinear frequency conversion

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Frontiers of physics 2022年第1期17卷 7-37页

作者： Aviv Karnieli Yongyao Li Ady arie Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv UniversityRamat Aviv69978Tel AvivIsrael School of Physics and Optoelectronic Engineering Foshan UniversityFoshan528000China School of Electrical Engineering Fleischman Faculty of EngineeringTel Aviv UniversityTel AvivIsrael

The geometric phase of light has been demonstrated in various platforms of the linear optical regime, raising interest both for fundamental science as well as applications, such as flat optical elements. Recently, the concept of geometric phases has been extended to nonlinear optics, following advances in engineering both bulk nonlinear photonic crystals and nonlinear metasurfaces. These new technologies offer a great promise of applications for nonlinear manipulation of light. In this review, we cover the recent theoretical and experimental advances in the field of geometric phases accompanying nonlinear frequency conversion. We first consider the case of bulk nonlinear photonic crystals, in which the interaction between propagating waves is quasi-phase-matched, with an engineerable geometric phase accumulated by the light. Nonlinear photonic crystals can offer efficient and robust frequency conversion in both the linearized and fully-nonlinear regimes of interaction, and allow for several applications including adiabatic mode conversion, electromagnetic nonreciprocity and novel topological effects for light. We then cover the rapidly-growing field of nonlinear Pancharatnam-Berry metasurfaces, which allow the simultaneous nonlinear generation and shaping of light by using ultrathin optical elements with subwavelength phase and amplitude resolution. We discuss the macroscopic selection rules that depend on the rotational symmetry of the constituent meta-atoms, the order of the harmonic generations, and the change in circular polarization. Continuous geometric phase gradients allow the steering of light beams and shaping of their spatial modes. More complex designs perform nonlinear imaging and multiplex nonlinear holograms, where the functionality is varied according to the generated harmonic order and polarization. Recent advancements in the fabrication of three dimensional nonlinear photonic crystals, as well as the pursuit of quantum light sources based on nonlin

关键词： nonlinear optics quasi phase matching holography geometric phase nonlinear metasurfaces Pancharatnam-Berry phase frequency conversion

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Nonlinear optical holograms for spatial and spectral shaping of light waves

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Science Bulletin 2015年第16期60卷 1403-1415页

作者： Asia Shapira Liran Naor Ady arie Department of Physical Electronics School of Electrical Engineering Tel Aviv University

Shaping either the spatial or the spectral output of a nonlinear interaction is accomplished by introducing basic concepts of computer-generated holography into the nonlinear optics regime. The possibilities of arbitrarily spatially shaping the result of a nonlinear interaction are presented for different phase-matching schemes allowing for both one- and two-dimensional shaping. Shaping the spectrum of a beam in nonlinear interaction is also possible by utilizing similar holographic techniques. The novel and complete control of the output of a nonlinear interaction opens exciting options in the fields of particle manipulation, optical communications, spectroscopy and quantum information.

关键词： Nonlinear optics Beam shaping Spectral shaping Computer-generated holograms

Abandoned corrals: colonization and vegetation recovery of ephemeral habitats in silvo-pastoral systems

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Journal of Plant Ecology 2020年第6期13卷 722-731页

作者： arie Vinograd Eli Zaady Jaime Kigel Institute of Plant Science and Genetics in Agriculture Robert H.Smith Faculty of AgricultureFood and EnvironmentHebrew University of JerusalemRehovot 76100Israel Department of Natural Resources Gilat Research CenterAROMobile Post Negev 85280Israel

Aims Management of silvo-pastoral systems in planted and natural forests in semi-arid Mediterranean regions often employs seasonal night corrals for animal *** management system changes the spatial distribution of animal excreta,resulting in a net transfer of soil mineral resources and their accumulation in the *** abandonment,corrals are colonized by ruderal species,becoming focal sources for their spread in the *** aimed to implement a rational management of seasonal sheep corrals based on a better understanding of the vegetation processes occurring in abandoned corrals,in order to alleviate their negative impact in the *** Relationships between temporal changes in the vegetation,the soil seed-bank and levels of soil nutrients were studied in a chronosequence of abandoned sheep corrals and compared with nearby reference plots in planted Eucalyptus forests grazed by sheep in the semi-arid North-Western Negev,*** region has a bi-seasonal Mediterranean climate,with high dominance of annual species in the grazing *** Findings Abandoned sheep corrals were colonized by seeds of ruderals originating in older abandoned *** successional changes occur at a slow rate,driven by the depletion of soil resources in the abandoned corrals,and were still in progress 20 years after *** were gradually replaced,first by taller grasses and followed by short grasses,but most forbs and particularly geophytes did not recover during this *** of the original herbaceous vegetation in the corrals was through seed dispersal from the surrounding vegetation,not from the original soil seed-bank remaining in the corrals after *** species in the grazed,planted forests behave as patch-tracking *** persistency depends on constant creation of new corrals compensating for the gradually dwindling populations in older abandoned corrals,and on the availability of dispersa

关键词： metapopulation ruderals seasonal grazing seed-bank sheep succession

An efficient method to measure reliability of underwater acoustic communication links

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Journal of Ocean Engineering and Science 2016年第2期1卷 129-134页

作者： Roee Diamant Yaakov Bucris arie Feuer Department of Marine Technology University of HaifaHaifaIsrael Department of Electrical Engineering TechnionHaifaIsrael

We consider the problem of evaluating the reliability of underwater acoustic communication(UWAC)*** is a requirement for any communication system and is often defined as the probability to achieve a target bit error *** of system reliability is often performed empirically by conducting a large number of ***,for UWAC,where experiments are expensive and time-consuming,not much data is available to perform such a reliability *** on the assumption that the long delay spread is the dominant characteristic of the underwater acoustic channel and for a given channel model,we offer a relaxed practical approach to evaluate the reliability of an UWAC *** a test case,we show reliability results for the multiple input multiple output(MIMO)code division multiple access(CDMA)communication system.

关键词： Underwater acoustic communication(UWAC) Reliability Signal-to-interference-plus-noise ratio(SINR)

Identification of chemical compounds in agarwood-producing species Aquilaria malaccensis and Gyrinops versteegii

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Journal of Forestry Research 2020年第4期31卷 1371-1380页

作者： arie Aqmarina Nasution Ulfah Juniarti Siregar Miftahudin Maman Turjaman Graduate School of Tropical Silviculture Bogor Agricultural University(IPB)Bogor 16680Indonesia Department of Silviculture Faculty of ForestryBogor Agricultural University(IPB)Bogor 16680Indonesia Department of Biology Faculty of Mathematics and NaturalSciencesBogor Agricultural University(IPB)Bogor 16680Indonesia Forest Research and Development Center Environment and Forestry ResearchDevelopmentand Innovation Agency(FORDA)Ministry of Environment and ForestryBogorIndonesia

Agarwood is a non-timber forest product found in tropical rain *** is a black and fragrant resin valued for the perfume industry and demand continues to ***,the Indonesian agarwood-producing species,Aquilaria malaccensis and Gyrinops versteegii do not automatically produce such quality ***-induction technology or inoculation using Fusarium solani is usually applied to these species to trigger resin *** research aims to identify agarwood compounds formed in seedlings and trees of *** and *** after these species were inoculated with the fungus *** chemical compounds were identified by comparing the patterns of mass spectra fragmentation in the sample and in previous *** groups of agarwood compounds were identified:(1)sesquiterpen group-cisjasmone and aromadendrenepoxide;(2)chromones group-8-methoxy-2-(2-phenylethyl)chromen-4-one and newly-discovered chromone derivative,7-(benzyloxy)-5-hydroxy-2-methylchromone found only in ***;(3)aromatic group-benzylacetone,guaiacol,p-ethylguaiacol,phenol,syringaldehyde,vanilin,furfuryl alcohol,and furfural;(4)fatty acid group-palmitic acid,oleic acid,and lauric acid;and,(5)triterpen group-squalene.

关键词： Agarwood constituent Aquilaria malaccensis Fusarium solani Gyrinops versteegii

SEPRAN: A Versatile Finite-Element Package for a Wide Variety of Problems in Geosciences

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Journal of Earth Science 2015年第1期26卷 89-95页

作者： arie van den Berg Guus Segal David A.Yuen Department of Theoretical Geophysics Institute of Earth SciencesUtrecht University3508 TC UtrechtThe Netherlands Faculty of Electrical Engineering Mathematics and Computer ScienceTU DelftThe Netherlands Department of Earth Sciences and Minnesota Supercomputing Institute University of MinnesotaMinneapolis MN 55455USA School of Environmental Studies China University of Geosciences

Numerical modelling of geological processes, such as mantle convection, flow in porous media, and geothermal heat transfer, has become quite common with the increase in computing and the availability of usable software. Today modelling these dynamical processes entails the solving of the governing equations involving the mass, momentum, energy and chemical transport. These equations represent partial differential equations and must be solved on powerful enough computers because they require sufficient spatial and temporal resolution to be useful. We describe here the salient and outstanding features of the SEPRAN software package, developed in the Netherlands, as a case study for a robust and user-friendly soft- ware, which the geological community can utilize in handling many thermal-mechanical-chemical problems found in geology, which will include geothermal situations, where many types of partial differential equations must be solved at the same time with thermodynamical input parameters.

关键词： SEPRAN finite element package geodynamic and planetary modelling geothermal groundwater flow.