Experimental Observation of a Predicted Exchange Resonance in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> + <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>4</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> Elastic Scattering

Ronald E. Brown; E. E. Gross; A. van der Woude

doi:10.1103/PhysRevLett.25.1346

Experimental Observation of a Predicted Exchange Resonance in ${}^{3}{He}$ + ${}^{4}{He}$ Elastic Scattering

Ronald E. Brown, E. E. Gross, and A. van der Woude

Phys. Rev. Lett. 25, 1346 – Published 9 November 1970; Erratum Phys. Rev. Lett. 25, 1686 (1970)

Abstract

Resonating-group calculations predict a backward-peaked, exchange resonance in the ${}^{3}{He}$ + ${}^{4}{He}$ elastic-scattering cross section. We have measured the energy dependence of the elastic-scattering differential cross section at 173.2° (c.m.) and have observed a resonance structure which has many of the predicted characteristics.