Measurement of the relative longitudinal spin-dependent total cross-section difference in n(vector sign)-d(vector sign) scattering

Journal Article · Wed Mar 15 00:00:00 EST 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.034002· OSTI ID:20771319

Foster, R D; Gould, C R; Haase, D G; Kelley, J M; Markoff, D M ^[1]; Tornow, W ^[1]

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1. Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308 (United States)

We report relative measurements of the n(vector sign)-d(vector sign) longitudinal spin-dependent total cross-section difference ({delta}{sigma}{sub L}){sub d}, at E{sub n}(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 ({delta}{sigma}{sub L}){sub d} measurement at E{sub n}(lab) = 1.18 MeV. The polarized neutron beams were produced through the {sup 3}H(p(vector sign),n(vector sign)){sup 3}He and {sup 2}H(d(vector sign),n(vector sign)){sup 3}He reactions. The neutron polarizations were determined either by direct measurement or from known or calculated polarization-transfer coefficients. The results for ({delta}{sigma}{sub L}){sub 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.

• OSTI ID: 20771319
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 73, Issue 3; Other Information: DOI: 10.1103/PhysRevC.73.034002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEUTERIUM
DEUTERIUM TARGET
DEUTERON BEAMS
DEUTERON REACTIONS
HELIUM 3
MAGNETIC FIELDS
MEV RANGE
NEUTRON BEAMS
NEUTRON REACTIONS
NEUTRONS
NUCLEAR MAGNETIC RESONANCE
NUCLEON-NUCLEON POTENTIAL
POLARIZATION
POLARIZED BEAMS
SCATTERING
SPIN
TOTAL CROSS SECTIONS
TRITIUM