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Measurement of the neutron-proton spin correlation coefficient Ayy at 90° c.m. by elastic scattering of 13.7 MeV polarized neutrons from a polarized proton target

Publication ,  Journal Article
Schöberl, M; Kuiper, H; Schmelzer, R; Mertens, G; Tornow, W
Published in: Nuclear Physics, Section A
November 21, 1988

The neutron-proton spin correlation coefficient Ayy was measured at 90° c.m. by elastic scattering of 13.7 MeV polarized neutrons from a polarized proton target. The target polarization of about 60% was produced in a LMN single crystal by dynamic nuclear orientation using 70 GHz microwaves. The target was thin enough to allow the detection of the recoil protons in coincidence with the associated scattered neutrons. Our result for Ayy is the first experimental determination of a neutron-proton spin correlation parameter at such a low energy. To determine the influence of Ayy on the 3S1-3D1 mixing parameter ε1, a single-energy n-p phase shift analysis was performed using the experimentally determined value of Ayy= 0.078 ± 0.014 along with analyzing power and cross section data. As expected, the result for ε1 changes drastically upon the inclusion of Ayy. An unexpectedly small value of ε1 = -0.16°±0.54° has been obtained in the present analysis. © 1988.

Duke Scholars

Published In

Nuclear Physics, Section A

DOI

ISSN

0375-9474

Publication Date

November 21, 1988

Volume

489

Issue

2

Start / End Page

284 / 302

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

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Schöberl, M., Kuiper, H., Schmelzer, R., Mertens, G., & Tornow, W. (1988). Measurement of the neutron-proton spin correlation coefficient Ayy at 90° c.m. by elastic scattering of 13.7 MeV polarized neutrons from a polarized proton target. Nuclear Physics, Section A, 489(2), 284–302. https://doi.org/10.1016/0375-9474(88)90154-6
Schöberl, M., H. Kuiper, R. Schmelzer, G. Mertens, and W. Tornow. “Measurement of the neutron-proton spin correlation coefficient Ayy at 90° c.m. by elastic scattering of 13.7 MeV polarized neutrons from a polarized proton target.” Nuclear Physics, Section A 489, no. 2 (November 21, 1988): 284–302. https://doi.org/10.1016/0375-9474(88)90154-6.
Schöberl M, Kuiper H, Schmelzer R, Mertens G, Tornow W. Measurement of the neutron-proton spin correlation coefficient Ayy at 90° c.m. by elastic scattering of 13.7 MeV polarized neutrons from a polarized proton target. Nuclear Physics, Section A. 1988 Nov 21;489(2):284–302.
Schöberl, M., et al. “Measurement of the neutron-proton spin correlation coefficient Ayy at 90° c.m. by elastic scattering of 13.7 MeV polarized neutrons from a polarized proton target.” Nuclear Physics, Section A, vol. 489, no. 2, Nov. 1988, pp. 284–302. Scopus, doi:10.1016/0375-9474(88)90154-6.
Schöberl M, Kuiper H, Schmelzer R, Mertens G, Tornow W. Measurement of the neutron-proton spin correlation coefficient Ayy at 90° c.m. by elastic scattering of 13.7 MeV polarized neutrons from a polarized proton target. Nuclear Physics, Section A. 1988 Nov 21;489(2):284–302.
Journal cover image

Published In

Nuclear Physics, Section A

DOI

ISSN

0375-9474

Publication Date

November 21, 1988

Volume

489

Issue

2

Start / End Page

284 / 302

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences