Measurements of {Delta}{sigma}{sub {ital T}} in polarized-neutron--polarized-proton scattering

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.52.2351· OSTI ID:122369

Wilburn, W S; Gould, C R; Haase, D G; Huffman, P R; Keith, C D; Roberson, N R; Tornow, W ^[1]

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1. Physics Department, Duke University, Durham, North Carolina 27708 (United States)

The spin-dependent total cross-section difference {Delta}{sigma}{sub {ital T}} has been measured at energies of 7.43, 9.57, and 11.60 MeV for neutrons, polarized transverse to the beam momentum, transmitted through a transversely polarized proton target. In addition, the energy at which {Delta}{sigma}{sub {ital T}} crosses through zero has been determined in the energy range 3.65--6.25 MeV. The measurements were carried out with a polarized TiH{sub 2} target and polarized neutrons from the {sup 3}H(p,n){sup 3}He and {sup 2}H(d,n){sup 3}He reactions. The cross-section differences {Delta}{sigma}{sub {ital T}} are sensitive to the strength of the {sup 3}{ital S}{sub 1}--{sup 3}{ital D}{sub 1} mixing parameter {epsilon}{sub 1}. Phase-shift analyses are used to determine {epsilon}{sub 1} values from the data. The values are in good in agreement with {ital NN} potential models and do not support the low {epsilon}{sub 1} values found in previous studies around 15--20 MeV.

• DOE Contract Number: FG05-88ER40441; FG05-91ER40619
• OSTI ID: 122369
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 52; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
MEV RANGE 01-10
MEV RANGE 10-100
NUCLEON-NUCLEON POTENTIAL
PHASE SHIFT
POLARIZED BEAMS
POLARIZED TARGETS
PROTON-NEUTRON INTERACTIONS
TOTAL CROSS SECTIONS