Abstract
Direct mass measurements of up to 6 isotopes for each of the elements chlorine through iron (over 35 masses) have been performed using the Time-of-Flight Isochronous (TOFI) spectrometer. We have used these measurements to: (1) investigate the local dependence of neutron and proton pairing energies on neutron excess, (2) find a new region of enhanced binding centered around53Sc, and (3) evaluate the predictive capabilities of several mass models.
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It is a pleasure to acknowledge the technical help of Larry Ulibarri and the LAMPF engineering, electronics, and operations groups. We wish to also thank G.W. Butler, P. Möller, and J.R. Nix for many valuable discussions and K.E.G. Löbner for the continued use of the Bragg peak gas ionization counter. This work was performed under the auspices of the US Department of Energy.
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Tu, X.L., Zhou, X.G., Vieira, D.J. et al. Direct mass measurements of the neutron-rich isotopes of chlorine through iron. Z. Physik A - Atomic Nuclei 337, 361–366 (1990). https://doi.org/10.1007/BF01294971
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DOI: https://doi.org/10.1007/BF01294971