Formation and decay of toroidal and bubble nuclei and the nuclear equation of state
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Multifragmentation, following the formation of toroidal and bubble nuclei, is observed with an improved Boltzmann-Uehling-Uhlenbeck model for central Mo92+92Mo collisions. With a stiff equation of state, simultaneous explosion into several nearly equal fragments in a ringlike manner occurs due to the formation of metastable toroidal nuclei. In contrast, with a soft equation of state, simultaneous explosion into several nearly equal fragments in a volumelike manner occurs due to the formation of metastable bubble nuclei. Experimental signatures for the formation of these exotic shapes are discussed. © 1993 The American Physical Society.
author list (cited authors)
Xu, H. M., Natowitz, J. B., Gagliardi, C. A., Tribble, R. E., Wong, C. Y., & Lynch, W. G.