</mml:mo><mml:mn>70</mml:mn></mml:mrow></mml:msup></mml:math> Zn + <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mrow><mml:mn>64</mml:mn><mml:mo>,</mml:mo><mml:mn>70</mml:mn></mml:mrow></mml:msup></mml:math> Zn and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup></mml:math> Zn, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup></mml:math> Ni + <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup></mml:math> Zn, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup Neutron-proton equilibration in 35 MeV/ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>u</mml:mi></mml:math> collisions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mrow><mml:mn>64</mml:mn><mml:mo>

2018 American Physical Society. Previous work has quantified the degree of neutron-proton equilibration in heavy-ion nuclear collisions by observing the convergence of isospin observables (such as the isoscaling parameter ) to an expected value based on similar symmetric reaction systems. We present a new signature of equilibration: the convergence of the isospin asymmetry (as quantified by three isoscaling metrics) of two mirror asymmetric reaction systems toward each other rather than a predefined point. For the reactions of 35 MeV/u Zn64,70+Zn64,70 and Zn64,Ni64+Zn64,Ni64 the neutron-proton equilibration was found to be approximately 80%, and this result is compared directly to previous work.

May, L. W., Wakhle, A., McIntosh, A. B., Kohley, Z., Behling, S., Bonasera, A., ... Yennello, S. J.

Neutron-proton equilibration in 35 MeV/ u collisions of 64,70 Zn + 64,70 Zn and 64 Zn, 64 Ni + 64 Zn, 64Academic Article