Predictions of the masses of highly neutron-rich light nuclei

Use of the Four-Neutron Transfer ReactionO18(OHickey1, Weisser2, Cerny3 et al. 1976Phys. Rev. Lett.Self Cite17020View full textAdd to dashboardCite

“…Such a recoil counter was sufficiently thick to detect the low-energy oxygen recoils (which had energy less than 10 MeV) yet permitted higher-energy events to be vetoed. It was placed at an angle that corresponded to the expected recoil angle if 22 0 had a mass excess of 9.35 MeV; this is the predicted value of Jelley et al 6 The 2-msr solid angle subtended by the recoil detector ensured that even if this predicted value was in error by up to ± 1.5 MeV, the 22 0 recoil would still be observed. Fast timing techniques were used to establish a coincidence between an 14 0 event and its associated recoil, with a time resolution better than 3 nsec.…”

“…However, the value obtained here is in excellent agreement with three recent theoretical predictions. An updated calculation 6 of the transverse relation of Garvey et al 5 based on an independent-particle model of the nucleus predicts a mass excess for 22 0 of 9.42 MeV, while the modified-shell-model mass equations of Jelley et al 6 predict 9.35 MeV. Of particular interest is the result from the untruncated shell-model calculations in the 2sld shell by Cole, Watt, and Whitehead 7 ; when employing the more successful Preedom-Wildenthal two-body interaction, they predict an 22 0 mass excess of 9.47 MeV.…”