https://doi.org/10.1140/epja/i2019-12762-x
Regular Article - Experimental Physics
Where we stand on structure dependence of ISGMR in the Zr-Mo region: Implications on K∞
1
Department of Physics, University of Notre Dame, 46556, Notre Dame, IN, USA
2
Nuclear Physics Division, Bhabha Atomic Research Centre, 400085, Mumbai, India
3
KVI-CART, University of Groningen, 9747 AA, Groningen, The Netherlands
* e-mail: m.n.harakeh@kvi.nl
Received:
2
April
2019
Accepted:
26
April
2019
Published online:
2
December
2019
Isoscalar giant resonances, being the archetypal forms of collective nuclear behavior, have been studied extensively for decades with the goal of constraining bulk nuclear properties of the equation of state, as well as for modeling dynamical behaviors within stellar environments. An important such mode is the isoscalar electric giant monopole resonance (ISGMR) that can be understood as a radially symmetric density vibration within the saturated nuclear volume. The field has a few key open questions, which have been proposed and remain unresolved. One of the more prov-ocative questions is the extra high-energy strength in the 
region, which manifested in large percentages of the E0 sum rule in 92Zr and 92Mo above the main ISGMR peak. The purpose of this article is to introduce these questions within the context of experimental investigations into the phenomena in the zirconium and molybdenum isotopic chains, and to address, via a discussion of previously published and preliminary results, the implications of recent experimental efforts on extraction of the nuclear incompressibility from this data.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
