Fortune, H Terry
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Publication Properties of 3.89/3.96-MeV states in 11Be(2012-09-18) Fortune, H TerryI have reanalyzed previous data from the 9Be(t,p) reaction to extract energies and widths for the two states near 3.9 MeV. Results are energies of 3889.27 ± 1.03 and 3954.53 ± 1.16 and widths of 3.2(8) and 7.9(7), all in keV, for the 5/2− and 3/2− states, respectively.Publication Energy and Width of the Excited 0+ stat in 12O(2010-01-01) Fortune, H Terry; Sherr, RubbyWe review predictions for the energy of the excited 0+state of 12O and present new calculations of its width. Results are compared with those of a recent experiment.Publication Branching Ratio of 18Ne(7.06 MeV, 4+)(2012-12-13) Fortune, H TerryThe recently reported branching ratio (BR) for the 4+ state in 18Ne at Ex = 7.06 MeV strongly disagrees with the BR computed using the known properties of this state.Publication Update on alpha-particle and Nucleon Widths in 19F and 19Ne(2010-01-01) Fortune, H. Terry; Lacaze, A G; Sherr, RubbyThis short article concerns α-particle and/or nucleon widths for several states in 19F and 19Ne. It addresses questions arising from new experiments or calculations. Many of the states involved are of interest in connection with reaction-rate calculations in astrophysics. For each state, or set of states, we discuss the new information in the context of what was previously known. Our recent article concerned states above 6.5 MeV in 19F. Except for one of those states, the present article primarily involves only states below 6.5 MeV. Unless otherwise noted, our energies and Jπ values are from the latest compilation.Publication Consistent Description of 11Be and 12Be and of the 11Be(d,p)12Be Reaction(2012-05-22) Fortune, H Terry; Sherr, RubbySimple wave functions for 11,12Be have been around for a long time. They have been tested against many independent processes involving (and properties of) these nuclei. All are consistent, except 11Be(d,p), where the discrepancy is a 4.7σ effect for the 2+ state and 15σ for the ground state. Here, we propose a resolution to this dilemma.Publication Mass of 18Mg(g.s.)(2013-04-11) Fortune, H Terry; Sherr, R.We use a potential model, together with spectroscopic factors from a combination of weak coupling and a shell-model calculation, to compute the mass of the ground state of 18Mg, considered as a mirror of 18C. The result is E2p=3.87(10)MeV.Publication Two-Proton Decay Energy and Width of 19Mg(g.s.)(2007-07-30) Fortune, H. Terry; Sherr, RubbyWe use a weak-coupling procedure and results of a shell-model calculation to compute the two-proton separation energy of 19Mg. Our result is at the upper end of the previous range, but 19Mg is still bound for single proton decay to 18Na. We also calculate the 2p decay width.Publication B(E2) Values in 12Be and Core Excitation(2012-04-11) Fortune, H TerryI have examined the B(E2)’s in 12Be connecting the first 2+ state to the first two 0+ states. I find that they can be understood in the simple model that has been successful for a variety of other observables in this nucleus, but only if the 2+ state has an excited-core component.Publication Comment on ‘‘Predicting Narrow States in the Spectrum of a Nucleus beyond the Proton Drip Line’’(2007-08-27) Fortune, H Terry; Sherr, RubbyPublication Excited states of 19Mg(2013-01-15) Fortune, H Terry; Sherr, R.We have calculated energies of the first two excited states of 19Mg by using a model that was previously successful for the ground state. Computed excitation energies are 1.12 and 1.54 MeV for (3/2−) and (5/2−), respectively—somewhat in disagreement with values of 1.38 and 2.14 MeV from a recent experiment.