4.8 Article

High-Resolution Measurements of e+ + H2O Total Cross Section

Journal

PHYSICAL REVIEW LETTERS
Volume 117, Issue 25, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.253401

Keywords

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Funding

  1. Engineering and Physical Sciences Research Council (EPRSC) [EP/E053521/1, EP/P009395/1]
  2. Hungarian Scientific Research Foundation (OTKA) [K104409]
  3. EPSRC [EP/E053521/1, EP/P009395/1] Funding Source: UKRI
  4. Engineering and Physical Sciences Research Council [EP/P009395/1, EP/E053521/1, 1265013] Funding Source: researchfish

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Using a purely electrostatic positron beam, the total cross section of positrons scattering from H2O has been measured for the first time with a high angular discrimination (similar or equal to 1 degrees) against forward scattered projectiles. Results are presented in the energy range (10-300) eV. Significant deviations from previous measurements are found which are, if ascribed entirely to the angular acceptances of various experimental systems, in quantitative accord with ab initio theoretical predictions of the differential elastic scattering cross section.

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