Spreading Widths of Isoscalar Giant Quadrupole Resonances in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">O</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>16</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Ca</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>40</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

T. Hoshino; A. Arima

doi:10.1103/PhysRevLett.37.266

Spreading Widths of Isoscalar Giant Quadrupole Resonances in ${}^{16}O$ and ${}^{40}{Ca}$

T. Hoshino and A. Arima

Phys. Rev. Lett. 37, 266 – Published 2 August 1976

Abstract

Isoscalar giant quadrupole resonances are theoretically studied for ${}^{16}O$ and ${}^{40}{Ca}$ . A remarkable difference in the widths of these resonances observed in ( $α, α^{'}$ ) experiments is explained. Both one-particle, one-hole and two-particle, two-hole correlations are found to be responsible for producing the difference.