BACKWARD np SCATTERING WITH A POLARIZED TARGET

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The authors have measured the polarization parameter P in neutron-proton elastic scattering near the backward direction, using a polarized proton target. Measurements covered the range of incident neutron moment from 1.0 to 5.5 GeV/c and of four-momentum transfer squared u from -0.005 to -0.5 (GeV/c){sup 2}. Forward going protons were detected by means of a wire-spark-chamber spectrometer. Slow neutrons near 90 deg lab angle were detected in coincidence by means of an array of plastic scintillation counters. P was determined from the change in counting rate I of scattered particles upon reversal of the target polarization P{sub T} according to ... continued below

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11 p.

Creation Information

Robrish, Peter R.; Chamberlain, Owen; Field Jr., Richard D.; Fuzesy, Raymond Z.; Gom, W.; Morehouse, Charles C. et al. January 1, 1970.

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Description

The authors have measured the polarization parameter P in neutron-proton elastic scattering near the backward direction, using a polarized proton target. Measurements covered the range of incident neutron moment from 1.0 to 5.5 GeV/c and of four-momentum transfer squared u from -0.005 to -0.5 (GeV/c){sup 2}. Forward going protons were detected by means of a wire-spark-chamber spectrometer. Slow neutrons near 90 deg lab angle were detected in coincidence by means of an array of plastic scintillation counters. P was determined from the change in counting rate I of scattered particles upon reversal of the target polarization P{sub T} according to I = I{sub 0}[l + P(P{sub T} {center_dot} k incident neutron x k final neutron/sin {theta} final neutron)]. They find that P is consistently negative and shows no marked structure as a function of u and of incident momentum. The data roughly follow the simple form P = -0.5 {radical}-u/m{sub p}.

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11 p.

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  • Report No.: UCRL--19365
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.2172/926760 | External Link
  • Office of Scientific & Technical Information Report Number: 926760
  • Archival Resource Key: ark:/67531/metadc893910

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • January 1, 1970

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 3, 2016, 7:46 p.m.

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Robrish, Peter R.; Chamberlain, Owen; Field Jr., Richard D.; Fuzesy, Raymond Z.; Gom, W.; Morehouse, Charles C. et al. BACKWARD np SCATTERING WITH A POLARIZED TARGET, report, January 1, 1970; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc893910/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.