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Träfflista för sökning "WFRF:(Kovash M.) srt2:(2010-2014)"

Sökning: WFRF:(Kovash M.) > (2010-2014)

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1.
  • Myers, L. S., et al. (författare)
  • Compton scattering from C-12 using tagged photons in the energy range 65-115 MeV
  • 2014
  • Ingår i: Physical Review C (Nuclear Physics). - 0556-2813. ; 89:3
  • Tidskriftsartikel (refereegranskat)abstract
    • Elastic scattering of photons from C-12 has been investigated using quasimonoenergetic tagged photons with energies in the range 65-115 MeV at laboratory angles of 60 degrees, 120 degrees, and 150 degrees. at the Tagged-Photon Facility at the MAX IV Laboratory in Lund, Sweden. A phenomenological model was employed to provide an estimate of the sensitivity of the C-12(gamma,gamma)C-12 cross section to the bound- nucleon polarizabilities.
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2.
  • Myers, L S, et al. (författare)
  • Measurement of compton scattering from the deuteron and an improved extraction of the neutron electromagnetic polarizabilities.
  • 2014
  • Ingår i: Physical Review Letters. - 1079-7114. ; 113:26
  • Tidskriftsartikel (refereegranskat)abstract
    • The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data-and have been, with good accuracy, in the case of the proton. In contradistinction, information for the neutron requires the use of Compton scattering from nuclear targets. Here, we report a new measurement of elastic photon scattering from deuterium using quasimonoenergetic tagged photons at the MAX IV Laboratory in Lund, Sweden. These first new data in more than a decade effectively double the world data set. Their energy range overlaps with previous experiments and extends it by 20 MeV to higher energies. An analysis using chiral effective field theory with dynamical Δ(1232) degrees of freedom shows the data are consistent with and within the world data set. After demonstrating that the fit is consistent with the Baldin sum rule, extracting values for the isoscalar nucleon polarizabilities, and combining them with a recent result for the proton, we obtain the neutron polarizabilities as α_{n}=[11.55±1.25(stat)±0.2(BSR)±0.8(th)]×10^{-4} fm^{3} and β_{n}=[3.65∓1.25(stat)±0.2(BSR)∓0.8(th)]×10^{-4} fm^{3}, with χ^{2}=45.2 for 44 degrees of freedom.
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3.
  • Adler, Jan-Olof, et al. (författare)
  • The upgraded photon tagging facility at the MAX IV Laboratory
  • 2013
  • Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 715, s. 1-10
  • Tidskriftsartikel (refereegranskat)abstract
    • A description is given of the upgraded photon tagging facility at the MAX IV Laboratory. Two magnetic spectrometers are used to momentum analyze post-bremsstrahlung electrons. The tagged photon range extends from 10 to 180 MeV with an energy resolution of about 300 keV. The system has been operated at rates up to 4 x 10(6) photons s(-1) MeV (-1). Different diagnostic tools are described as well as the experimental program.
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4.
  • Myers, L. S., et al. (författare)
  • Monte Carlo simulation of the photon-tagger focal-plane electronics at the MAX IV laboratory
  • 2013
  • Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 729, s. 707-717
  • Tidskriftsartikel (refereegranskat)abstract
    • Rate-dependent effects in the electronics used to instrument the tagger focal plane at the MAX IV Laboratory have been investigated using the novel approach of Monte Carlo simulation. Results are compared to analytical calculations as well as experimental data for both specialized testing and production running to demonstrate a thorough understanding of the behavior of the detector system.(C) 2013 Elsevier By. All rights reserved.
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  • Resultat 1-4 av 4

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