The spectroscopic factor of ${}_{}{}^9{}_{}{}^{}\mathrm{Be}(d, n){}_{}{}^{10}{}_{}{}^{}\mathrm{B}$ leading to the $T=1\mathrm{}$ state is increased by about a factor of 2 by considering the $t·T$ interaction, and becomes consistent with shell-model predictions.

The formalism of Siemens and Bethe concerning the stability of ${}_{}{}^{298}{}_{}{}^{}114$ gives different conclusions depending on the mass formula used in obtaining the fissionability parameter.

We discuss the suitability of natural media to serve as objects of analysis for quark abudance, including the effects of momentum distribution at production, concentration or dilution in collection, effective length of irradiation by cosmic radiation, and target shape. The resulting concentrations may vary by ten orders of magnitude, the lowest being for sea water, the highest for stratospheric aerosols and selected iron meteorites.

A new approach to higher symmetries is suggested, particularly to the particle spectrum associated with them, based on a generalized partial-wave analysis of the conventional $S$ matrix.

An alignment of a nucleus in the ${}_{}{}^1{}_{}{}^{}S_0^{}{}_{}{}^{}$ ground state of ${}_{}{}^{131}{}_{}{}^{}\mathrm{Xe}$ was achieved through exchange collisions with atoms in the metastable state formed and aligned by electron impact. It was observed by monitoring the change of linearly polarized resonance radiation by the $\mathrm{Xe}\left({}_{}{}^3{}_{}{}^{}P_2^{}{}_{}{}^{}\right)$ metastable state as we caused a nuclear magnetic resonance.

An experimental observation of the onset of quantized vortex lines in a rotating annulus of He II has been made. The results agree with the predictions of Donnelly and Fetter which were based on a free-energy approach, provided care is taken to ensure equilibrium.

We demonstrate for the first time a rotational Meissner effect for liquid helium, analogous to the magnetic Meissner effect in superconductors. Liquid helium in a rotating cylinder is cooled through the lambda temperature. At sufficiently slow rotational speeds, the superfluid forms in a state of 0 total angular momentum, causing the container to rotate faster.

It is shown that if a longitudinal wave is excited in a collision-free plasma and Landaudamps away, and a second wave is excited and also damps away, then a third wave (i.e., the echo) will spontaneously appear in the plasma.

Recent photoemission studies of noble and transition metals show a predominance of "nondirect" electronic excitations and indicate an anomalous density-of-states peak below the expected $d$-band. We attribute these observations to second-order (and higher) processes involving secondary phonon- and electron-pair excitations.

Phonon dispersion relations of BaTi${\mathrm{O}}_3$ have been measured in the cubic phase by the inelastic neutron scattering technique. The energy of the soft mode, consistent with Cochran's theory, decreases with temperature to 0.8 meV at 230°C.

Sharp oscillations have been observed in the magnetopiezotransmission spectrum of the indirect transition in germanium at $T\sim 20°$K. From the energy spacing of the observed transitions, we have deduced the nonparabolicity of the $L_1$ conduction band.