Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Pedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaPedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie
Zmień bibliotekę

Wyszukujesz frazę "Roth, R." wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-10 z 99
Tytuł:
Low-energy neutron-deuteron reactions with N^{3}LO chiral forces
Autorzy:
Skibiński, Roman
Vary, J.
Binder, S.
Topolnicki, Kacper
Kamada, Hiroyuki
Langhammer, J.
Calci, A.
Witała, Henryk
Minossi, D.
Golak, Jacek
Bernard, V.
Nogga, Andreas
Maris, P.
Meißner, Ulf-G.
Hebeler, K.
Roth, R.
Epelbaum, E.
Krebs, H.
Liebig, S.
Opis:
We solve three-nucleon Faddeev equations with nucleon-nucleon and three-nucleon forces derived consistently in the framework of chiral perturbation theory at next-to-next-to-next-to-leading order in the chiral expansion. In this first investigation we include only matrix elements of the three-nucleon force for partial waves with the total two-nucleon (three-nucleon) angular momenta up to 3 (5/2). Low-energy neutron-deuteron elastic scattering and deuteron breakup reaction are studied. Emphasis is put on A _{y} puzzle in elastic scattering and cross sections in symmetric-space-star and neutron-neutron quasi-free-scattering breakup configurations, for which large discrepancies between data and theory have been reported.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Few-nucleon systems with state-of-the-art chiral nucleon-nucleon forces
Autorzy:
Vary, J. P.
Epelbaum, E.
Potter, H.
Langhammer, J.
Golak, Jacek
Hebeler, K.
Topolnicki, Kacper
Meißner, Ulf-G.
Maris, P.
Minossi, D.
Furnstahl, R. J.
Krebs, H.
Calci, A.
Nogga, A.
Witała, Henryk
Skibiński, Roman
Kamada, H.
Liebig, S.
Roth, R.
Binder, S.
Opis:
We apply improved nucleon-nucleon potentials up to fifth order in chiral effective field theory, along with a new analysis of the theoretical truncation errors to study nucleon-deuteron (Nd) scattering and selected low-energy observables in H3,He4, and Li6. Calculations beyond second order differ from experiment well outside the range of quantified uncertainties, providing truly unambiguous evidence for missing three-nucleon forces within the employed framework. The sizes of the required three-nucleon-force contributions agree well with expectations based on Weinberg's power counting. We identify the energy range in elastic Nd scattering best suited to study three-nucleon-force effects and estimate the achievable accuracy of theoretical predictions for various observables.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
The LOFAR Two-Metre Sky Survey : VI. Optical identifications for the second data release
Autorzy:
Hanset, M.
Dickinson, H.
Gürkan, G.
Terentev, I. A.
Hale, C. L.
Horton, M. A.
Mostert, R. I. J.
Best, P. N.
Croston, J. H.
Osinga, E.
Kurtz, W.
Siewert, T. M.
Pierce, J. C. S.
Mielle, L.
Kondapally, R.
Tang, H.
Goyal, Arti
Pajdosz-Śmierciak, Urszula
Stott, J. P.
Schwarz, D. J.
O'Sullivan, S. P.
Bailey, T.
Smith, D. J. B.
Brüggen, M.
Gonano, V.
Jamrozy, Marek
Sabater, J.
Duncan, K. J.
Prandoni, I.
Lim, S. M.
Röttgering, H. J. A.
Alegre, L.
Hajduk, M.
Desbled, S.
Williams, W. L.
Kunert-Bajraszewska, M.
Magliocchetti, M.
Vaccari, M.
Torres, M.
Zheng, X.
Petley, J.
de Gasperin, F.
Shimwell, T. W.
Hoeft, M.
Mahatma, V. H.
Hardcastle, M. J.
Shulewski, A.
Roth, R.
Barkus, B.
Molloy, C. S.
Botteon, A.
Drabent, A.
Opis:
The second data release of the LOFAR Two-Metre Sky Survey (LoTSS) covers 27% of the northern sky, with a total area of ~5700 deg$^{1}$. The high angular resolution of LOFAR with Dutch baselines (6 arcsec) allows us to carry out optical identifications of a large fraction of the detected radio sources without further radio followup; however, the process is made more challenging by the many extended radio sources found in LOFAR images as a result of its excellent sensitivity to extended structure. In this paper we present source associations and identifications for sources in the second data release based on optical and near-infrared data, using a combination of a likelihood-ratio cross-match method developed for our first data release, our citizen science project Radio Galaxy Zoo: LOFAR, and new approaches to algorithmic optical identification, together with extensive visual inspection by astronomers. We also present spectroscopic or photometric redshifts for a large fraction of the optical identifications. In total 4 116 934 radio sources lie in the area with good optical data, of which 85% have an optical or infrared identification and 58% have a good redshift estimate. We demonstrate the quality of the dataset by comparing it with earlier optically identified radio surveys. This is by far the largest ever optically identified radio catalogue, and will permit robust statistical studies of star-forming and radio-loud active galaxies.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Influence of Oxygen Impurities on Electrical Properties of Fullerene C$\text{}_{60}$
Autorzy:
Rabenau, T.
Roth, S.
Kremer, R. K.
Tematy:
72.20.Jv
72.80.Le
72.20.-i
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1933397.pdf  Link otwiera się w nowym oknie
Opis:
We present high temperature dc, ac and contactless microwave conductivity results on solid-state C$\text{}_{60}$ (films and crystals) from room temperature up to 850 K. Heating pristine samples, which were exposed to the ambient atmosphere, under dynamic vacuum at first leads to a reduction of the electrical resistance and finally, above ≈700 K, to an increase in the resistance. The decrease is ascribed to oxygen desorption and the increase to the chemical reactivity of residual chemisorbed oxygen with the C$\text{}_{60}$ host molecules, respectively. Samples, annealed above 800 K, display a reversible temperature dependence of the resistance. The high temperature regime of their resistance exhibits an activated behaviour with an universal activation energy of 2E$\text{}_{a}$ = 1.85 ± 0.04 eV for crystals and films, which is identical to the HOMO-LUMO splitting of the C$\text{}_{60}$-molecules.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication and Characterization of Hybrid Tunnel Magnetoresistance Structures with Embedded Self-Assembled Nanoparticle Templates
Autorzy:
Siffalovic, P.
Majkova, E.
Chitu, L.
Halahovets, Y.
Jergel, M.
Senderak, R.
Luby, S.
Weis, M.
Satka, A.
Szymański, B.
Stobiecki, F.
Timmann, A.
Roth, S.
Tematy:
61.05.cf
61.46.Df
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1810565.pdf  Link otwiera się w nowym oknie
Opis:
We report on an incorporation of self-assembled templates of superparamagnetic Fe-O nanoparticles into tunnel magnetoresistance devices. We fabricated a multilayer stack composed of the following layer sequence: Cr/Au/Co/NP/Co/Cu on Si(100) substrate where NP stands for a self-assembled layer of nanoparticles deposited by the Langmuir-Blodgett technique. The X-ray reflectivity and grazing-incidence small angle X-ray scattering were employed to study the layers thicknesses and interface morphology in each preparation step. In particular, the grazing-incidence small angle X-ray scattering was measured before and after the nanoparticle incorporation as well as on the complete tunnel magnetoresistance stack. In this way, in-depth morphology profile during subsequent preparation steps was obtained. We demonstrate that X-ray analysis of the deposited tunnel magnetoresistance stack is essential for successful fabrication of novel hybrid devices consisting of self-assembled nanoparticles.
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 99

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies