Measurement of the relative longitudinal spin-dependent total cross-section difference in n→-d→ scattering

R. D. Foster, C. R. Gould, D. G. Haase, J. M. Kelley, D. M. Markoff, W. Tornow

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Abstract

We report relative measurements of the n→-d→ longitudinal spin-dependent total cross-section difference (ΔσL)d, at En(lab) = 5.0, 6.88, and 9.0 MeV. The deuteron target was polarized via dynamic nuclear polarization at 250 mK in a 2.5-T external magnetic field. The target polarization was monitored by nuclear magnetic resonance and was calibrated by a (ΔσL)d measurement at En(lab) = 1.18 MeV. The polarized neutron beams were produced through the H3(p→,n→)He3 and H2(d→,n→) He3 reactions. The neutron polarizations were determined either by direct measurement or from known or calculated polarization-transfer coefficients. The results for (ΔσL)d show agreement with theoretical calculations based on nucleon-nucleon potential models but are not of sufficient precision to distinguish the presence or absence of three-nucleon force contributions to the cross sections.

Original languageEnglish (US)
Article number034002
JournalPhysical Review C - Nuclear Physics
Volume73
Issue number3
DOIs
Publication statusPublished - 2006

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

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