We demonstrate that the form and location (not the size or spacing) of the energetically preferred geometrical structure of the crystalline quark-hadron mixed phase in a neutron star are very sensitive to finite size terms beyond the surface term. We consider two independent approaches of including further finite size terms, namely, the multiple reflection expansion of the bag model and an effective surface tension description. Thus care should be taken in any model requiring detailed knowledge of these crystalline structures.

The ${\beta }^{-}$ decay of ${}^{136}$Sb has been studied for the first time, giving new information on the excited states in ${}^{136}$Te having low angular momenta. Apart from the “ground state band,” only about nine states with angular momenta in the range 0–2 units are expected below the excitation energy of 2.5 MeV. A majority of them has been found in the present measurements. The $J^{\pi }$ of the ground state of ${}^{136}$Sb was identified as $1^{-}$. No evidence was found for the presence of high spin isomers in neither ${}^{136}$Sb nor in ${}^{136}$Te.

High-spin states in ${}^{70}\mathrm{As}$ were populated using the ${}^{58}\mathrm{Ni}$ (${}^{16}\mathrm{O},$ $3pn$) reaction at 70 MeV energy. Lifetime measurements of the ${11}^{\mathrm{}(+)\mathrm{}}\to 9^{\mathrm{}(+)\mathrm{}}$ 980.7 keV and ${(13\mathrm{}}^{+})\to {11}^{\mathrm{}(+)\mathrm{}}1342.7\mathrm{keV}$ transitions using the Doppler-shift attenuation method determined that both are enhanced $E2\mathrm{}$ transitions. This measurement indicates the onset of deformation with increasing spin in ${}^{70}\mathrm{As},$ as has been seen in neighboring nuclei.

It is shown that a sampling algorithm, recently proposed in conjunction with a lattice-gas model of nuclear fragmentation, samples the canonical ensemble only in an approximate fashion. A residual weight factor has to be taken into account to calculate correct thermodynamic averages. Then, however, the algorithm is numerically inefficient.

Recent studies show that successful relativistic mean-field models of nuclei are consistent with naive dimensional analysis and naturalness, as expected in low-energy effective field theories of quantum chromodynamics. The nonrelativistic Skyrme energy functional is found to have similar characteristics.

The rapidity gap probability in the ${}^{24}\mathrm{M}\mathrm{g}-\mathrm{A}\mathrm{g}\mathrm{B}\mathrm{r}$ interaction at $4.5\mathrm{GeV}/c/\mathrm{nucleon}$ has been studied in detail. The data reveal scaling behavior of the void probability in the central rapidity domain which confirms the validity of the linked-pair approximation for the $N$-particle cumulant correlation functions. This scaling behavior appears to be similar to the void probability in the Perseus-Pisces supercluster region of galaxies.

The role of noncentral forces is brought out in elastic scattering involving particles with arbitrary spins using a formalism employing projection operator techniques. The particular case of $N\Delta \to N\Delta$ is considered explicitly.

Low lying resonances in the unbound nuclei ${}^{11}\mathrm{N}$ and ${}^{15}\mathrm{F}$ have been calculated using a conventional Woods-Saxon potential plus a surface term deduced from the mirror nuclei ${}^{11}\mathrm{Be}$ and ${}^{15}\mathrm{C},$ respectively. Calculations for ${}^{11}\mathrm{N}$ are in good agreement with experimental results showing that both a halo nucleus and its unbound mirror nucleus can be described simultaneously. For the ${}^{13}\mathrm{C}$ and ${}^{13}\mathrm{N}$ mirror nuclei where the surface term is weaker we have checked that our results are similar to what was previously obtained with pure Woods-Saxon potentials. Within the same approach, two ${1/2}^{+}$ and ${5/2}^{+}$ narrow resonances are predicted in ${}^{15}\mathrm{F},$ mirror of ${}^{15}\mathrm{C},$ at 1.2 and 2.35 MeV, also in agreement with measurements.

We comment on a paper by Huang Xiang Zhong, concerning the final analytical formula [Eq. (16)] for evaluating the scattering amplitude for collision between two composite nuclei “$A$” and “$B$.”

High-spin states in ${}^{92}\mathrm{Ru}$ were populated via the reaction ${}^{58}\mathrm{Ni}{(}^{40}\mathrm{Ca},\alpha 2p)$ at 145 MeV beam energy. Using six EUROBALL cluster detectors we measured lifetimes by means of the recoil distance Doppler shift method and are able to propose several significant changes in the published level scheme of ${}^{92}\mathrm{Ru}.$ While the observed spin dependence of $M1-$ and moderately enhanced $E2\mathrm{}$-strengths is well reproduced by the shell model in the parametrization by Gross and Frenkel, the use of a surface delta residual force leads to less satisfactory results.

Excited states in ${}^{128}$Xe have been populated in the fusion reaction ${}^{125}\mathrm{Te}(\alpha {,n)}^{128}\mathrm{Xe}$ with the aim of searching for mixed symmetry states at energies around 2 MeV. The $2_4^{+}$ state at 2.127 MeV decays to the 2${}_1^{+}$ state with a transition of 99.4% $M1\mathrm{}$ character. The lifetime of this state was measured by the Doppler attenuation technique. The $B\left(M1\mathrm{}\right)\mathrm{}$ value of the γ transition indicates the mixed symmetry character of the 2${}_4^{+}$ state. The experimental results are in good agreement with interacting boson model ($IBM-2\mathrm{}$) calculations. The decay selection rules of the 2${}^{+}$ mixed-symmetry states are discussed on the basis of the $\tau$ quantum numbers and the $d$ parity.

Rotational states at high spins have been identified in the doubly odd nucleus ${}^{80}$Rb. A striking feature of the level scheme is that the transition energies in the $\alpha =1\mathrm{}$ signature component of the positive parity band are quite similar to those of the yrast band in ${}^{78}$Kr. This is the only instance of identical bands at high spin, with a difference in seniority $\Delta \nu =2\mathrm{}$, in this mass region.

Prompt $\gamma$-ray cascades in $N=83\mathrm{}$ fission product nuclei near ${}^{132}$Sn have been studied at Eurogam II using a ${}^{248}$Cm source. Cross coincidences observed between $\gamma$ rays from complementary light and heavy fission fragments were vital for isotopic assignments. Yrast states in the $N=83\mathrm{}$ isotones ${}^{134}$Sb, ${}^{135}$Te, and ${}^{136}$I are reported. The interpretation of the level schemes is based mainly on results of shell model calculations using empirical proton-proton interaction energies from ${}^{134}$Te, and proton-neutron interactions estimated from the well-known ${}^{210}$Bi level spectrum.

Exclusive and inclusive $({\nu }_{\mu },{\mu }^{-})$, $\left({\nu }_e{,e}^{-}\right)$ cross sections and ${\mu }^{-}$-capture rates are calculated for ${}^{12}$C and ${}^{16}$O using the consistent random phase approximation (RPA) and pairing model. After a pairing correction is introduced to the RPA results, the flux-averaged theoretical $({\nu }_{\mu },{\mu }^{-})$, $\left({\nu }_e{,e}^{-}\right)$ cross sections and ${\mu }^{-}$-capture rates in ${}^{12}$C are in good agreement with experiment. Predictions of $({\nu }_{\mu },{\mu }^{-})$ and $\left({\nu }_e{,e}^{-}\right)$ cross sections in ${}^{16}$O are also presented.

We calculate the corrections to the strange matrix elements of the nucleon resulting from the breaking of rotational invariance on the light-cone. In the meson cloud model, the strange magnetic moment ${\mu }_S$ is seen to change sign once the spurious form factors arising from this violation are subtracted. The resulting ${\mu }_S$ is small and slightly positive, in agreement with the trend of the recent data from the SAMPLE experiment. The value of the strange magnetic form factor is predicted to be largely $Q^2$ independent over the range accessible in upcoming experiments.

The parametric region in the plane defined by the ratios of the energies of the subsystems and the three-body ground state, in which Efimov states can exist, is determined. We use a renormalizable model that guarantees the general validity of our results in the context of short-range interactions. The experimental data for one- and two-neutron separation energies, implies that among the halo nuclei candidates, only ${}^{20}\mathrm{C}$ has a possible Efimov state, with an estimated energy less than 14 KeV below the scattering threshold.

Absolute differential cross sections for the threshold electrodisintegration of the deuteron with good resolution were measured at a laboratory scattering angle of 160° for five values of $Q^2$ ranging from 8.66 to $42.4{\mathrm{fm}}^{\mathrm{-}2}.$ Comparisons of the data averaged over $E_{\mathrm{np}}$ from 0 to 3 MeV and from 0 to10 MeV are made with nonrelativistic meson exchange calculations. These calculations are sensitive to the nucleon electromagnetic form factors, nucleon-nucleon potential, and relativistic effects. The data are also compared with a hybrid quark-hadron model calculation that describes the deuteron as a six-quark cluster for the short range part of the interaction. Some of these calculations can describe the data reasonably well over certain ranges of $Q^2;$ however, none of these calculations can accurately describe the data over the entire measured $Q^2$ range.

We present a systematic study of the leading twist structure functions of the deuteron, $F_2^D,$ $b_{1,2}^D$, and $g_1^D$ in a fully relativistic approach. Our study is based on a realistic Bethe-Salpeter amplitude for the deuteron, which is obtained as a solution to the homogeneous Bethe-Salpeter equation with a realistic $\mathrm{NN}$ kernel. Particular effort is made to connect the structure functions to the densities of the appropriate charges and currents. This allows for a systematic comparison between relativistic and nonrelativistic calculations by analyzing the same densities in both approaches. Thus, the sources of the relativistic effects in the structure functions are understood and clearly distinguished from variations caused by the differences in the model parameters. We present both the formalism and extensive numerical calculations for all steps of our analysis. We find that the nonrelativistic and relativistic calculations are qualitatively very much alike. However, three main features systematically distinguish a consistent relativistic approach from the nonrelativistic one: (i) the binding effects are larger, (ii) the effect of Fermi motion at high $x$ is stronger, and (iii) the relativistic description of the structure functions $b_{1,2}^D$ is fully consistent, unlike the nonrelativistic approach, which is internally inconsistent and violates the fundamental sum rules.