Widths and Spectroscopic Factors in ²¹O

A recent 20O(d,p)21O experiment, in reverse kinematics, discovered two new states in 21O at 4.77(10) and 6.17(11) MeV, with Jπ assignments of 3/2+ and of 3/2+ or 7/2−, respectively. Both widths and spectroscopic factors were reported, along with the branching ratio for the upper state to decay to the 2+ state of 20O. We have computed single-particle widths for all the relevant decays and have used them to extract additional information for these two states, including the spectroscopic factors for 2+ decay of the upper state with the two possible Jπ values. Our analysis prefers 7/2− for Jπ

Reexamining \u3csup\u3e18\u3c/sup\u3eNa and \u3csup\u3e19\u3c/sup\u3eMg

New results for energies of resonances in 18Na have led us to reexamine the problems of 18Na and 19Mg. We have calculated the effect of the new data on energy and decay width of 19Mg (ground state)

Matter Radii of \u3csup\u3e29-35\u3c/sup\u3eMg

We have computed matter radii for the ground states of 29–35Mg for a variety of reasonable assumptions about the structure of the relevant states. For cases in which the dominant configuration is generally agreed, our computed radii are in good agreement with experimental ones. For cases in which the dominant configuration is unknown or ambiguous, comparisons between the calculated and experimental Rm do not allow a decision as to the preferred configuration

Structure of 2\u3csup\u3e+\u3c/sup\u3e, \u3cem\u3eT\u3c/em\u3e = 2 States in \u3cem\u3eA\u3c/em\u3e = 12 Nuclei

Using a reasonable but simple model, properties of 2+ states in 12Be and 12O are calculated and compared with results of experiments

(\u3cem\u3esd\u3c/em\u3e)\u3csup\u3e2\u3c/sup\u3e States or Superclusters in \u3csup\u3e10\u3c/sup\u3eBe

A set of states in 10Be have very large α widths and very small neutron strengths. We review the data and investigate whether they are (sd)2 states and/or α clusters

Excited states of \u3csup\u3e19\u3c/sup\u3eMg

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

Coulomb Energies in \u3csup\u3e16\u3c/sup\u3eNe and Low-lying levels of \u3csup\u3e17\u3c/sup\u3eNa

We have computed energies of 16Ne levels in a core plus two-nucleon space, using known 16C energies and existing wave functions. We have then used these energies to compute properties of the first three levels of 17Na. Significant differences are found with results of a recent microscopic-cluster-model formulation

Mass of \u3csup\u3e18\u3c/sup\u3eMg(g.s.)

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

Energy and Width of the Excited 0\u3csup\u3e+\u3c/sup\u3e stat in \u3csup\u3e12\u3c/sup\u3eO

We 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

Predictions for the first two positive-parity states of \u3csup\u3e13\u3c/sup\u3eF

We have used a potential model, together with information from 13Be, to compute expected energies and widths for the first two positive-parity states of 13F. Results are (all in MeV) Ep = 2.30 and 4.94 (or 5.26), width ∼0.6 and 0.3 (or 0.4), for 1/2+ and 5/2+, respectively