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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 39.

A simple all-solid tellurite microstructured optical fiber
which has only one layer of high-index rods in the cladding is proposed and fabricated in the paper. The core and the cladding with the low index are made from the TeO_2–ZnO–Na_2O–La_2O_3 glass, and the high-index rods ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Tonglei ChengZhongchao DuanMeisong LiaoWeiqing GaoDinghuan DengTakenobu SuzukiYasutake Ohishi Source Type: research

Extension and validation of the GN model for non-linear interference to uncompensated links using Raman amplification
We show the extension of the Gaussian Noise model, which describes non-linear propagation in uncompensated links of multilevel modulation formats, to systems using Raman amplification. We successfully validate the analytical results by comparison with numerical simulations of Nyquist-WDM PM-16QAM ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Vittorio CurriAndrea CarenaPierluigi PoggioliniGabriella BoscoFabrizio Forghieri Source Type: research

Simultaneous detection of 10-Gbit/s QPSK × 2-ch. Fourier-encoded synchronous OCDM signals with digital coherent receiver
Abstract: We experimentally demonstrate the simultaneous detection of 10-Gbit/s quadrature phase shift keying (QPSK) × 2-channel Fourier-encoded synchronous optical code division multiplexing (FE-SOCDM) signals using a digital coherent receiver, for the first time. First, we analytically ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Yasuhiro OkamuraOsamu IijimaSatoshi ShimizuNaoya WadaMasanori Hanawa Source Type: research

Tunable emission from blue to white light in single-phase Na_0.34Ca_(0.66-x_-y_)Al_1.66Si_2.34O_8: xEu^2+,yMn^2+ (x = 0.07) phosphor for white-light UV LEDs
A series of single-phased emission-tunable Na_0.34Ca_0.66Al_1.66Si_2.34O_8:Eu^2+,Mn^2+ phosphors were successfully synthesized by a wet-chemical synthesis method. Photoluminescence excitation (PLE) spectra indicate that the phosphor can be efficiently excited by UV radiation from 250 to 420 nm. ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Ga-yeon LeeWon Bin ImArtavazd KirakosyanSang Hoon CheongJi Yeon HanDuk Young Jeon Source Type: research

Optical isolation with epsilon-near-zero metamaterials
We suggest a principle for isolation of circularly polarized waves in magnetically active extreme-parameter metamaterials. Using theoretical analysis and numerical simulations, we show that metamaterials with extreme parameters, such as epsilon-near-zero materials (ENZ), when merged with ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Arthur R. DavoyanAhmed M. MahmoudNader Engheta Source Type: research

Fabrication of arrayed metallic nano-particles on a flexible substrate for inducing localized surface plasmon resonance
This paper presents a new method for fabricating periodic arrays of metallic nano-particles on flexible substrates. This method is based on metallic film contact transfer method and high-power pulsed laser annealing. Experiments have been carried out to produce arrayed metallic nano-particles ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Chun-Hung Chen Yung-Chun Lee Source Type: research

Enhanced narrow-bandwidth emission during high-order harmonic generation from aligned molecules
We theoretically investigate the selective enhancement of high-harmonic generation (HHG) in a small spectral range when an orthogonal-polarized two-color laser field interacts with aligned O_2 molecules. It is shown clearly that the enhanced narrow-bandwidth emission near the cutoff of the HHG ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Chaojin ZhangJinping YaoFadhil A. UmranJielei NiBin ZengGuihua LiDi Lin Source Type: research

Silica-coated and annealed CdS nanowires with enhanced photoluminescence
The CdS/SiO_2 core/shell nanowires (NWs) with controlled shell thickness were successfully synthesized and subsequently heat-treated at 500 °C. The influences of silica shell coating and annealing processes on their optical properties have been investigated. Compared with original CdS NWs, ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Shan LiangMin LiJia-Hong WangXiao-Li LiuZhong-Hua HaoLi ZhouXue-Feng YuQu-Quan Wang Source Type: research

Modeling and experimental investigations of Fano resonances in free-standing LiNbO_3 photonic crystal slabs
We present a numerical analysis and experimental measurements with free space illumination where the dependence of slab thickness, radius of air holes and lattice types are investigated. The unique ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Jun DengSajid HussainVanga Sudheer KumarWei JiaChing Eng PngLim Soon ThorAndrew A. BettiolAaron J. Danner Source Type: research

Interplay between transparency and efficiency in dye sensitized solar cells
In this paper we analyze the interplay between transparency and efficiency in dye sensitized solar cells by varying fabrication parameters such as the thickness of the nano-crystalline TiO_2 layer, the dye loading and the dye type. Both transparency and efficiency show a saturation trend when ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Roberto TagliaferroDaniele ColonnaThomas M. BrownAndrea RealeAldo Di Carlo Source Type: research

Speckle statistics and transverse coherence of an x-ray laser with fluctuations in its active medium
It is shown that the statistics of the intensity distribution in the output beam of a collisional X-ray laser, analysed in terms of the degree of freedom or equivalently the number of the coherence modes in the beam cross-section, has non-Gaussian character. The non-Gaussian character seems to be ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: K. A. JanulewiczC. M. KimH. Stiel Source Type: research

Textile integrated sensors and actuators for near-infrared spectroscopy
Being the closest layer to our body, textiles provide an ideal platform for integrating sensors and actuators to monitor physiological signals. We used a woven textile to integrate photodiodes and light emitting diodes. LEDs and photodiodes enable near-infrared spectroscopy (NIRS) systems to ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Christoph ZyssetNassim NasseriLars BütheNiko MünzenriederThomas KinkeldeiLuisa PettiStefan KleiserGiovanni A. SalvatoreMartin WolfGerhard Tröster Source Type: research

Rectangular illumination using a secondary optics with cylindrical lens for LED street light
The illumination pattern of an LED street light is required to have a rectangular distribution at a divergence-angle ratio of 7:3 for economical illumination. Hence, research supplying a secondary optics with two cylindrical lenses was different from free-form curvature for rectangular ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Hsi-Chao ChenJun-Yu LinHsuan-Yi Chiu Source Type: research

Compact micro-displacement sensor with high sensitivity based on a long-period fiber grating with an air-cavity
We proposed and experimentally demonstrated a compact micro-displacement sensor with high sensitivity based on a long-period fiber grating (LPG) with an air-cavity. The sensor head is obtained by composing an air-cavity with the ends of a LPG and a single mode fiber (SMF). The wavelength shift of ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Liang QiChun-Liu ZhaoYunpeng WangJuan KangZaixuan ZhangShangzhong Jin Source Type: research

Polarimetric method for liquid crystal displays characterization in presence of phase fluctuations
A polarimetry based method able to characterize optical properties of linear Liquid Crystal Displays (LCDs), even in presence of time-fluctuations of the phase, is proposed in this work. In particular, mean linear retardance, Liquid Crystal (LC) fast axis orientation and phase fluctuation amplitude ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: C. RamirezB. KarakusA. LizanaJ. Campos Source Type: research

Mode resolved bend loss in few-mode optical fibers
We present a novel approach to directly measure the bend loss of individual modes in few-mode fibers based on the correlation filter technique. This technique benefits from a computer-generated hologram performing a modal decomposition, yielding the optical power of all propagating modes in the ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Christian SchulzeAdrian LorenzDaniel FlammAlexander HartungSiegmund SchröterHartmut BarteltMichael Duparré Source Type: research

UV-Vis-NIR luminescence properties and energy transfer mechanism of LiSrPO_4:Eu^2+, Pr^3+ suitable for solar spectral convertor
An efficient near-infrared (NIR) phosphor LiSrPO_4:Eu^2+, Pr^3+ is synthesized by solid-state reaction and systematically investigated using x-ray diffraction, diffuse reflection spectrum, photoluminescence spectra at room temperature and 3 K, and the decay curves. The UV-Vis-NIR energy transfer ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Yan ChenJing WangChunmeng LiuJinke TangXiaojun KuangMingmei WuQiang Su Source Type: research

Forward error correction supported 150 Gbit/s error-free wavelength conversion based on cross phase modulation in silicon
We build a forward error correction (FEC) module and implement it in an optical signal processing experiment. The experiment consists of two cascaded nonlinear optical signal processes, 160 Gbit/s all optical wavelength conversion based on the cross phase modulation (XPM) in a silicon nanowire and ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: H. HuJ. Dahl AndersenA. RasmussenB.M. SørensenK. DalgaardM. GaliliM. PuK. YvindK.J. LarsenS. ForchhammerL.K. Oxenløwe Source Type: research

Grain size dependence of surface plasmon enhanced photoluminescence
Photoluminescence (PL) in the InGaN quantum well based light-emitting diodes (LED) is greatly mediated through the coupling with the Surface Plasmons (SPs) at the interface of the sputtered Ag film. SPs coupled PL is independently tuned through controlling the grain size of the sputtered Ag films. ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Xiaoying XuMitsuru FunatoYoichi KawakamiKoichi OkamotoKaoru Tamada Source Type: research

Localized surface plasmon-enhanced near-ultraviolet emission from InGaN/GaN light-emitting diodes using silver and platinum nanoparticles
We demonstrate localized surface plasmon (LSP)-enhanced near-ultraviolet light-emitting diodes (NUV-LEDs) using silver (Ag) and platinum (Pt) nanoparticles (NPs). The optical output power of NUV-LEDs with metal NPs is higher by 20.1% for NUV-LEDs with Ag NPs and 57.9% for NUV-LEDs with Pt NPs at 20 ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Sang-Hyun HongChu-Young ChoSang-Jun LeeSang-Youp YimWantae LimSung-Tae KimSeong-Ju Park Source Type: research

A 340-nm-band ultraviolet laser diode composed of GaN well layers
We have demonstrated the laser operation of a short-wavelength ultraviolet laser diode with multiple-quantum-wells composed of GaN well layers. The laser action has been achieved in 340-nm-band far from the wavelength corresponding to GaN band gap under the pulsed current mode at room temperature. ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Yoji YamashitaMasakazu KuwabaraKousuke ToriiHarumasa Yoshida Source Type: research

Experimental and theoretical study of wide hysteresis cycles in 1550 nm VCSELs under optical injection
We present experimental results of output power bistability in a vertical-cavity surface-emitting laser under optical injection induced by frequency detuning or power variation of the master laser. An ultra-wide hysteresis cycle of 3.7 nm (473.3 GHz) is achieved through frequency detuning, which is ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Peng GuoWeijian YangDevang ParekhConnie J. Chang-HasnainAnshi XuZhangyuan Chen Source Type: research

Novel wideband microwave polarization network using a fully-reconfigurable photonic waveguide interleaver with a two-ring resonator-assisted asymmetric Mach-Zehnder structure
We propose and demonstrate a novel wideband microwave photonic polarization network for dual linear-polarized antennas. The polarization network is based on a waveguide-implemented fully-reconfigurable optical interleaver using a two-ring resonator-assisted asymmetric Mach-Zehnder structure. For ...
Source: Optics Express - February 1, 2013 Category: Physics Authors: Leimeng ZhuangWillem BeekerArne LeinseRené HeidemanPaulus van DijkChris Roeloffzen Source Type: research

Weak gratings in silicon-on-insulator for spectral filters based on volume holography
We demonstrate integrated holographic grating filters, that can be designed toward any desired target spectrum. A straightforward design method transforms this target spectrum into a weak effective refractive index variation. The filters are implemented in high-contrast silicon-on-insulator by ...
Source: Optics Letters - February 1, 2013 Category: Physics Authors: Marie VerbistDries Van ThourhoutWim Bogaerts Source Type: research

Helico-conical optical beams self-heal
An optical beam is said to be self-healing when, distorted by an obstacle, the beam corrects itself upon propagation. In this Letter we show, through experiments supported by numerical simulations, that Helico-conical optical beams self-heal. We observe the strong resilience of these beams with ...
Source: Optics Letters - February 1, 2013 Category: Physics Authors: N. HermosaC. Rosales-GuzmánJ. P. Torres Source Type: research

Spectrum to distance mapping via nonlinear Airy pulses
We theoretically and experimentally study the phenomena related to self-phase modulation of Airy pulses in fibers. During nonlinear evolution, most spectral components of the Airy pulses concentrate into one or two peaks for normal and anomalous dispersion, respectively. The resulting peaks ...
Source: Optics Letters - February 1, 2013 Category: Physics Authors: Yi HuMing LiDomenico BongiovanniMatteo ClericiJianping YaoZhigang ChenJosé AzañaRoberto Morandotti Source Type: research

Imaging unveils temperature distribution inside living cells
(American Institute of Physics) A new breakthrough marks the first time anyone has been able to show the actual temperature distribution inside living cells. This work will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Biology - February 1, 2013 Category: Biology Source Type: news

Listening to cells: Scientists probe human cells with high-frequency sound
(American Institute of Physics) Researchers have developed a new non-contact, non-invasive tool to measure the mechanical properties of cells at the sub-cell scale. Their work will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Biology - February 1, 2013 Category: Biology Source Type: news

Cooperators can coexist with cheaters, as long as there is room to grow
(American Institute of Physics) When a population is a mixture of exploiters and exploited, the natural outcome is perpetual war. A new model reveals that even with never-ending battles, these two groups can survive, but only if they have room to expand and grow. The findings will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Biology - February 1, 2013 Category: Biology Source Type: news

Beware the Mask
The turn of the 20th century witnessed the introduction of x-ray imaging, which contributed significantly to the increase in longevity from 47 to 77 years of age during the past century []. The National Academy of Engineering [] listed medical imaging as number 14 on its list of the top 20 advances of the 20th century, and it may be even higher, considering the advances in diagnostic imaging modalities of the last quarter of the 20th century: CT, MRI, single-photon emission computed tomography, and PET. The turn of the 21st century witnessed another significant advance in x-ray imaging: digital radiography (DR), both compu...
Source: Journal of the American College of Radiology : JACR - February 1, 2013 Category: Radiology Authors: Elizabeth Shields, Stewart Carlyle Bushong Tags: The Medical Physics Consult Source Type: research

Autism speaks through gene expression
(American Institute of Physics) Autism spectrum disorders affect nearly 1 in 88 children, with symptoms ranging from mild personality traits to severe intellectual disability and seizures. New work to examine which genes are responsible for autism disorders will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Medicine and Health - February 1, 2013 Category: Global & Universal Source Type: news

Group Therapy: New approach to psychosis treatment could target multiple nervous system receptors
(American Institute of Physics) A new understanding of how the brain's G-protein receptors work may soon enable a way to better customize and target antipsychotic drugs to treat specific symptoms. Researchers will present their findings at the 57th Annual Meeting of the Biophysical Society (BPS), held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Medicine and Health - February 1, 2013 Category: Global & Universal Source Type: news

The nanomechanical signature of breast cancer
(American Institute of Physics) Differences in the stiffness of cancerous versus healthy tissue may aid in diagnosis and therapy, researchers say. The work will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Medicine and Health - February 1, 2013 Category: Global & Universal Source Type: news

Type II diabetes and the Alzheimer's connection
(American Institute of Physics) A research team in Israel has devised a novel approach to identifying the molecular basis for designing a drug that might one day decrease the risk diabetes patients face of developing Alzheimer's disease. The team will present its work at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Medicine and Health - February 1, 2013 Category: Global & Universal Source Type: news

Tracking the evolution of antibiotic resistance
(American Institute of Physics) An automated device is yielding a new understanding of how antibiotic resistance evolves at the genetic level. This work will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Medicine and Health - February 1, 2013 Category: Global & Universal Source Type: news

Propping open the door to the blood brain barrier
(American Institute of Physics) A new approach to delivering therapeutics could lead to better treatment of central nervous system disorders. The work will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Medicine and Health - February 1, 2013 Category: Global & Universal Source Type: news

Quantum dots deliver Vitamin D to tumors for possible inflammatory breast cancer treatment
(American Institute of Physics) Quantum dots can be used to rapidly move high concentrations of the active form of Vitamin D to targeted tumor sites where cancer cells accumulate. The research will be presented at the 57th Annual Meeting of the Biophysical Society, held Feb. 2-6, 2013, in Philadelphia, Pa.
Source: EurekAlert! - Medicine and Health - February 1, 2013 Category: Global & Universal Source Type: news

Elimination of ghosting artifacts from wavelength-shifting fiber neutron detectors
C. L. Wang, L. G. Clonts, Y. Diawara, B. W. Hannan, and J. P. Hodges Misassignment of neutron position (ghosting) produces artifacts which have been observed in wavelength-shifting (WLS) fiber detectors developed for time-of-flight (TOF) neutron powder diffraction. In position-sensitive detectors (PSDs) with WLS fiber encoding, thermal and cold neutrons interact with ... [Rev. Sci. Instrum. 84, 013308 (2013)] published Thu Jan 31, 2013.
Source: Review of Scientific Instruments - January 31, 2013 Category: Physics Source Type: research

A novel rheo-optical device for studying complex fluids in a double shear plate geometry
Jean-Baptiste Boitte, Claude Vizcaino, Lazhar Benyahia, Jean-Marie Herry, Camille Michon et al. A new rheo-optical shearing device was designed to investigate the structural evolution of complex material under shear flow. Seeking to keep the area under study constantly within the field of vision, it was conceived to produce shear flow by relying on the uniaxial translation of two parallel plat ... [Rev. Sci. Instrum. 84, 013709 (2013)] published Thu Jan 31, 2013.
Source: Review of Scientific Instruments - January 31, 2013 Category: Physics Source Type: research

Optical tweezers with fluorescence detection for temperature-dependent microrheological measurements
Atsuomi Shundo, Koichiro Hori, David P. Penaloza, Jr., and Keiji Tanaka We introduce a setup of optical tweezers, capable of carrying out temperature-dependent rheological measurements of soft materials. In our setup, the particle displacement is detected by imaging a bright spot due to fluorescence emitted from a dye-labeled particle against a dark background onto a qu ... [Rev. Sci. Instrum. 84, 014103 (2013)] published Thu Jan 31, 2013.
Source: Review of Scientific Instruments - January 31, 2013 Category: Physics Source Type: research

Theory of magnetic field line random walk in noisy reduced magnetohydrodynamic turbulence
D. Ruffolo and W. H. Matthaeus When a magnetic field consists of a mean part and fluctuations, the stochastic wandering of its field lines is often treated as a diffusive process. Under suitable conditions, a stable value is found for the mean square transverse displacement per unit parallel displacement relative to the mean fiel ... [Phys. Plasmas 20, 012308 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Dynamics of laser ablated colliding plumes
We report the dynamics of single and two collinearly colliding laser ablated plumes of ZnO studied using fast imaging and the spectroscopic measurements. Two dimensional imaging of expanding plume and temporal evolution of various species in interacting zones of plumes are used to calculate plume fr ... [Phys. Plasmas 20, 013511 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Doubly excited states of the hydrogen negative ion and helium atom in astrophysical plasmas
Pinghui Jiang, Sabyasachi Kar, and Y. Zhou The nonthermal effects on the doubly excited resonance states of the hydrogen negative ion and helium atom are investigated in Lorentzian astrophysical plasma environments using highly correlated Hylleraas-type wave functions in the framework of the stabilization method. Resonance parameters (resona ... [Phys. Plasmas 20, 012126 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Comment on Supersonic regime of the Hall-magnetohydrodynamics resistive tearing instability [Phys. Plasmas 19, 072519 (2012)]
G. Vekstein and K. Kusano Ahedo and Ramos [Phys. Plasmas 19, 072519 (2012)] revisited what they called the supersonic regime of the Hall-mediated resistive tearing instability and arrived to results that disagree with the previously known ones (Fruchtman and Strauss [Phys. Fluids B 5, 1408 (1993)], Bian and Vekstein [Phys. P ... [Phys. Plasmas 20, 014703 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Discrete kinetic eigenmode spectra of electron plasma oscillations in weakly collisional plasma: A numerical study
Carrie Black, Kai Germaschewski, Amitava Bhattacharjee, and C. S. Ng It has been demonstrated that in the presence of weak collisions, described by the Lenard-Bernstein (LB) collision operator, the Landau-damped solutions become true eigenmodes of the system and constitute a complete set [C.-S. Ng et al., Phys. Rev. Lett. 83, 1974 (1999) and C. S. Ng et al., Phys. Re ... [Phys. Plasmas 20, 012125 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Response to Comment on `Supersonic regime of the Hall-magnetohydrodynamics resistive tearing instability' [Phys. Plasmas 20, 014703 (2013)]
J. J. Ramos and E. Ahedo The Comment by Vekstein and Kusano repeats conclusions of Bian and Vekstein [Phys. Plasmas 14, 072107 (2007)] which were inferred from order of magnitude estimates and missed crucial fine details of the problem. The Comment does not show any actual solution to substantiate them, therefore we do not ... [Phys. Plasmas 20, 014704 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Emittance of positron beams produced in intense laser plasma interaction
Hui Chen, J. C. Sheppard, D. D. Meyerhofer, A. Hazi, A. Link et al. The first measurement of the emittance of intense laser-produced positron beams has been made. The emittance values were derived through measurements of positron beam divergence and source size for different peak positron energies under various laser conditions. For one of these laser conditions, we ... [Phys. Plasmas 20, 013111 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Experimental observation of left polarized wave absorption near electron cyclotron resonance frequency in helicon antenna produced plasma
Kshitish K. Barada, P. K. Chattopadhyay, J. Ghosh, Sunil Kumar, and Y. C. Saxena Asymmetry in density peaks on either side of an m = +1 half helical antenna is observed both in terms of peak position and its magnitude with respect to magnetic field variation in a linear helicon plasma device [Barada et al., Rev. Sci. Instrum. 83, 063501 (2012)]. The plasma is produced by powerin ... [Phys. Plasmas 20, 012123 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Magnetic stochasticity and transport due to nonlinearly excited subdominant microtearing modes
D. R. Hatch, M. J. Pueschel, F. Jenko, W. M. Nevins, P. W. Terry et al. Subdominant, linearly stable microtearing modes are identified as the main mechanism for the development of magnetic stochasticity and transport in gyrokinetic simulations of electromagnetic ion temperature gradient driven plasma microturbulence. The linear eigenmode spectrum is examined in order to ... [Phys. Plasmas 20, 012307 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research

Manipulation of the magnetron orbit of a positron cloud in a Penning trap
We describe a simple and versatile method to manipulate the amplitude of the magnetron orbit of ions stored in a Penning trap, applied here to a cloud of low energy positrons. By applying a pulsed voltage to a split electrode in the trap, which is normally used for rotating wall compression of the p ... [Phys. Plasmas 20, 012124 (2013)] published Thu Jan 31, 2013.
Source: Physics of Plasmas - January 31, 2013 Category: Physics Source Type: research