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Journal articles on the topic 'Polarised-nuclei'

Author: Grafiati

Published: 11 March 2023

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1

Kudryavtsev, I. N., and A. P. Soznik. "Elastic intermediate-energy proton scattering by polarised nuclei." Journal of Physics G: Nuclear and Particle Physics 15, no. 9 (1989): 1377–95. http://dx.doi.org/10.1088/0954-3899/15/9/008.

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2

Glättli, Hans. "Polarised nuclei for neutron science: recent applications and perspectives." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 529, no. 1-3 (2004): 194–98. http://dx.doi.org/10.1016/j.nima.2004.04.156.

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3

Lampard, GJ, HH Bolotin, AE Stuchbery, CE Doran, and AP Byrne. "Systematics of Gyromagnetic Ratios of the 21+ States in Even Ge Isotopes." Australian Journal of Physics 40, no. 2 (1987): 117. http://dx.doi.org/10.1071/ph870117.

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The relative gyromagnetic ratios of the 2t states in 70,72,74,76Ge were measured simultaneously by me ns of the thin-foil, perturbed y-r yngular distribution technique utilising the transient hyperfine field manifest t nuclei of Ge ions rapidly traversing polarised Fe. The states of interest were Coulomb excited using 75-MeV 34S projectiles incident upon natural element l Ge t rget. The present results re comp red with previously reported measurements and collective model expectations.

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4

Court, G. R., and W. G. Heyes. "The polarisation of 14N and 15N nuclei in polarised proton targets using irradiated ammonia." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 243, no. 1 (1986): 37–40. http://dx.doi.org/10.1016/0168-9002(86)90818-1.

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5

O’Connor, Eoin G. P., Andrew Shearer, Christian Gouiffes, and Philippe Laurent. "High Time Resolution Astronomical Polarimetry with GASP." Proceedings of the International Astronomical Union 13, S337 (2017): 384–85. http://dx.doi.org/10.1017/s1743921317010626.

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AbstractThe Galway Astronomical Stokes Polarimeter (GASP) is a high time resolution, full-Stokes imaging polarimeter which utilises a Fresnel rhomb prism as a beam-splitter and quarter wave retarder. The ability to perform optical photometry and polarimetry at high frame rates enables more detailed studies of a multitude of compact objects including; optical pulsars, magnetars and Active Galactic Nuclei (AGN). We present a brief discussion of the instruments’ current capabilities and hardware design. GASP is currently configured with two Electron Multiplying Charge-Coupled Devices (EMCCDs), wh

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6

Shehu, D., G. Marsicano, J. E. Fléchon, and C. Galli. "Developmentally regulated markers of in vitro-produced preimplantation bovine embroys." Zygote 4, no. 2 (1996): 109–21. http://dx.doi.org/10.1017/s0967199400002987.

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SummaryExpression of various developmentally regulated markers was screened throughout the preimplantation stages of in vitro-derived bovine embryos. This was done by investigating the distribution of several nuclear, cytoplasmic and extracellular proteins by means of immunofluorescence microscopy. While lamin B appeared as a constitutive component of nuclei of all preimplantation stages, lamins A/C had a stage-related distribution. The early cleavage stage nuclei contained lamins A/C which generally disappeared in the following stages, with the possible exception of a few positive nuclei in t

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7

KISELEV, J. F., A. F. PRUDKOGLYAD, A. S. SHUMOVSKY, and V. I. YUKALOV. "DISCOVERY OF DICKE SUPERRADIATION BY SYSTEM OF NUCLEAR MAGNETIC MOMENTS." Modern Physics Letters B 01, no. 11n12 (1988): 409–16. http://dx.doi.org/10.1142/s021798498800148x.

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Spontaneous generation of the Dicke superradiation (SR) state has been found in the system of inversely polarised proton spins with “frozen” polarisation. SR is observed at the moment when the Larmor frequency crosses the resonance frequency of the passive oscillatory circuit. SR arises from incoherent maser generation of spins. The frequency of a SR generator can be retuned from several hundreds of kilohertz to hundreds of megahertz at very low temperatures. Dependence of incoherent and coherent radiation on the initial polarisation has been investigated. A radio frequency analogue of the opt

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8

Adebahr, B., M. Brienza, and R. Morganti. "Polarised structures in the radio lobes of B2 0258+35." Astronomy & Astrophysics 622 (February 2019): A209. http://dx.doi.org/10.1051/0004-6361/201833988.

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Context. The contribution of active galactic nuclei to the magnetisation of the Universe can be constrained by knowing their duty cycles, jet and magnetic field morphologies, and the physical processes dominating their interaction with the surrounding environment. Aims. The magnetic field morphology and strength of radio lobes of AGN has an influence on the mechanisms for the propagation of cosmic rays into intergalactic space. Using the source B2 0258+35 we want to investigate the interaction of its radio lobes with the surrounding environment and examine the underlying physical effects. Meth

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9

Catoira, R., A. C. Timmers, F. Maillet, et al. "The HCL gene of Medicago truncatula controls Rhizobium-induced root hair curling." Development 128, no. 9 (2001): 1507–18. http://dx.doi.org/10.1242/dev.128.9.1507.

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The symbiotic infection of the model legume Medicago truncatula by Sinorhizobium meliloti involves marked root hair curling, a stage where entrapment of the microsymbiont occurs in a chamber from which infection thread formation is initiated within the root hair. We have genetically dissected these early symbiotic interactions using both plant and rhizobial mutants and have identified a M. truncatula gene, HCL, which controls root hair curling. S. meliloti Nod factors, which are required for the infection process, induced wild-type epidermal nodulin gene expression and root hair deformation in

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10

Pisano, G., A. Ritacco, A. Monfardini, et al. "Development and application of metamaterial-based half-wave plates for the NIKA and NIKA2 polarimeters." Astronomy & Astrophysics 658 (January 27, 2022): A24. http://dx.doi.org/10.1051/0004-6361/202038643.

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Context. Large field-of-view imaging and polarimetry instruments operating at millimetre and sub-millimetre wavelengths are fundamental tools to understand the role of magnetic fields in channelling filament material into prestellar cores, providing unique insight in the physics of galactic star-forming regions. Among other topics, at extra-galactic scales, polarisation observations of Active Galactic Nuclei (AGNs) will allow us to constrain the possible physical conditions of the emitting plasma from the jets and/or explore the physics of dust inside supernova remnants. The kilo-pixel New IRA

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11

Dunin, V., A. Gribowsky, E. Kokoulina, et al. "Collective phenomena in hadron and nuclear interactions at high multiplicity." EPJ Web of Conferences 206 (2019): 03001. http://dx.doi.org/10.1051/epjconf/201920603001.

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Multiparticle production is described in the language of quarks and gluons. In the experiment the real hadrons are registered. For transfer from quarks and gluons to observed hadrons, various phenomenological models are used. In order to describe the high multiplicity region, we have developed a gluon dominance model. It represents a convolution of two stages. First stage is described by QCD. For second one (hadronisation), the phenomenological model is used. The description of topological cross sections in p $ \bar p $ collisions within of our model testifies that in hadron collisions the mec

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12

Pötzl, F. M., A. P. Lobanov, E. Ros, et al. "Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron." Astronomy & Astrophysics 648 (April 2021): A82. http://dx.doi.org/10.1051/0004-6361/202039493.

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Context. Supermassive black holes in the centres of radio-loud active galactic nuclei (AGN) can produce collimated relativistic outflows (jets). Magnetic fields are thought to play a key role in the formation and collimation of these jets, but the details are much debated. Aims. We study the innermost jet morphology and magnetic field strength in the AGN 3C 345 with an unprecedented resolution using images obtained within the framework of the key science programme on AGN polarisation of the Space VLBI mission RadioAstron. Methods. We observed the flat spectrum radio quasar 3C 345 at 1.6 GHz on

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13

Grosset, L., D. Rouan, F. Marin, et al. "High angular resolution polarimetric imaging of the nucleus of NGC 1068." Astronomy & Astrophysics 648 (April 2021): A42. http://dx.doi.org/10.1051/0004-6361/202038260.

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Context. Polarisation is a decisive method to study the inner region of active galactic nuclei (AGNs) since, unlike classical imaging, it is not affected by contrast issues. When coupled with high angular resolution (HAR), polarisation can help to disentangle the location of the different polarising mechanisms and then give insight into the physics taking place in the core of AGNs. Aims. We obtained a new data set of HAR polarimetric images of the archetypal Seyfert 2 nucleus of NGC 1068 observed with SPHERE/VLT. We aim in this paper to present the polarisation maps and to spatially separate t

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14

Lico, R., J. Liu, M. Giroletti, et al. "A parsec-scale wobbling jet in the high-synchrotron peaked blazar PG 1553+113." Astronomy & Astrophysics 634 (February 2020): A87. http://dx.doi.org/10.1051/0004-6361/201936564.

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Context. The detection of quasi-periodic variability in active galactic nuclei in general, and in blazars in particular, is key to our understanding of the origin and nature of these objects as well as their cosmological evolution. PG 1553+113 is the first blazar showing an approximately two-year quasi-periodic pattern in its γ-ray light curve, which is also revealed at optical frequencies. Aims. Such quasi-periodicity might have a geometrical origin, possibly related to the precessing nature of the jet, or could be intrinsic to the source and related to pulsational accretion flow instabilitie

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15

Prior, Christopher, and Konstantinos N. Gourgouliatos. "Observational signatures of magnetic field structure in relativistic AGN jets." Astronomy & Astrophysics 622 (February 2019): A122. http://dx.doi.org/10.1051/0004-6361/201834469.

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Context. Active galactic nuclei (AGN) launch highly energetic jets sometimes outshining their host galaxy. These jets are collimated outflows that have been accelerated near a supermassive black hole located at the centre of the galaxy. Their, virtually indispensable, energy reservoir is either due to gravitational energy released from accretion or due to the extraction of kinetic energy from the rotating supermassive black hole itself. In order to channel part of this energy to the jet, though, the presence of magnetic fields is necessary. The extent to which these magnetic fields survive in

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16

GLATTLI, H. "Polarised nuclei for neutron science: recent applications and perspectives." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, May 2004. http://dx.doi.org/10.1016/s0168-9002(04)00894-0.

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