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  • Near-threshold measurement ...
    Nilsson, Björn; Adler, Jan-Olof; Andersson, BE; Annand, JRM; Akkurt, I; Boland, Mark; Crawford, GI; Fissum, Kevin; Hansen, Kurt; Harty, PD; Ireland, DG; Isaksson, Lennart; Karlsson, Martin; Lundin, Magnus; McGeorge, JC; Miller, GJ; Ruijter, H; Sandell, Anders; Schröder, Bent; Sims, DA; Watts, D

    Physics letters. B, 10/2005, Letnik: 626, Številka: 1-4
    Journal Article

    A near-threshold He-4(gamma, n) cross-section measurement has been performed at MAX-lab. Tagged photons from 23 < Ey < 42 MeV were directed toward a liquid He-4 target, and neutrons were detected by time-of-flight in two liquid-scintillator arrays. Seven-point angular distributions were measured for eight photon energies. The results are compared to experimental data measured at comparable energies and Recoil-Corrected Continuum Shell Model, Resonating Group Method, and recent Hyperspherical-Harmonic Expansion calculations. The angle-integrated cross-section data are peaked at a photon energy of about 28 MeV, in disagreement with the value recommended by Calarco, Berman, and Donnelly in 1983.