The currents induced in the inner electronic shells by a nuclear Mössbauer $\gamma$ transition gives an $E(L+1\mathrm{})\mathrm{}-M\left(L\right)\mathrm{}$ phase difference on the order of ${10}^{-2\mathrm{}}$-${10}^{-3\mathrm{}}$ rad which must be taken into account in the interpretation of experiments designed to detect such phase differences arising from possible failure of $T$ invariance in nuclear interactions.

An unexpected rise in the constant-volume heat capacity of bcc ${\mathrm{He}}^4$ is observed in the 0.02°K interval below the discontinuity at melting, giving thermodynamic evidence for the appearance of new modes of motion associated with the break up of the crystal. The appearance of slipping motion in molecular-dynamics computer experiments with hard-particle systems allows the nature of these instabilities to be examined.

Enhancement of the third-harmonic generation has been observed in InSb in the presence of a magnetic field. The magnetic field values corresponding to maximum third-harmonic generation are found to be 7% lower than those corresponding to the interband magnetoabsorption resonances in InSb.

The triple-point pressure of four grades of graphite was determined to be 103 atm (absolute). The triple-point temperature varied from one grade to another with values ranging from 4183 ± 10 to 4299 ± 25°K. The solidus-liquidus temperature measured for one grade increased with increasing pressure from 4247°K at 103 atm to 4306°K at 1000 atm.

Arguments are developed to show that the Dzialoshinskii vector $\overrightarrow{\mathrm{D}}$ should be calculated according to statistical mechanics.

The magnetic field and angular dependence of the surface impedance of superconducting niobium near $H_{c2}$ is measured and compared with predictions based on the theory of Caroli and Maki.

Measurements of the low-temperature impurity resistance of dilute Al:Mn and Al:Cr alloys indicate a form $\rho \mathrm{}\left(T\right)={\rho }_0[1-{\left(\frac{T}{\theta }\right)}^2]$ where $\theta \approx 530$°K for Mn and 1200°K for Cr, and this behavior can be correlated with the high-temperature enhanced Pauli susceptibility of these alloys using the localized spin-fluctuation concept.

A series of curves of $P$ vs $E$ at various temperatures close to the transition temperature of triglycine sulfate have been used for determining the behavior of $P$ ${\left(\frac{\partial P}{\partial E}\right)}_T\simeq T_c$, and ${\left(\frac{\partial P}{\partial T}\right)}_E=0\mathrm{}$ with respect to field and temperature in the critical region. Log-log plots of the polarization and its derivatives versus $E$ and $T$ allow the direct experimental determination of six critical exponents. All of these experimental values are consistent with predictions of the mean-field theory.

High-field galvanomagnetic measurements are carried out on $n$- and $p$-type silicon in the concentration range corresponding to the metal-nonmetal transition. Abnormally large positive magnetoresistance is accompanied by a corresponding increase in the Hall coefficient with magnetic field. Expressions for resistivity and Hall coefficient are derived, and the predicted value of $\frac{\left[\frac{\Delta \rho \mathrm{}\left(H\right)\mathrm{}}{\rho \mathrm{}\left(0\right)\mathrm{}}\right]}{\left[\frac{\Delta R\left(H\right)\mathrm{}}{R\left(0\right)\mathrm{}}\right]}$ is consistent with experimental results.

The effects of electron-optical-phonon coupling on the combined resonance of both free and localized electrons have been studied in InSb. The results do not confirm the existence of a strong electron-TO-phonon interaction. Additional magneto-optical structure in the case of localized electrons appears to be due to discrete impurity excitations. The influence of conduction-band nonparabolicity on the impurity state binding energies has been observed.

The $p-p$ polarization corresponding to Y-IV fits is compared with recent Saclay measurements and values in the Saclay paper obtained from recent Livermore fits. Agreement of the Saclay measurements with Y-IV is freer of systematic deviations than in the Saclay paper with Livermore, accentuating doubts expressed by the Livermore group concerning compatibility of Berkeley polarized-target results with other scattering measurements.

A comprehensive study of the properties of "source-free" wave fields (i.e., diffracted wave fields expressible by plane-wave expansions containing only homogeneous waves) is summarized. The theorems proved in the study are stated. A new series mode expansion for "source-free" wave fields in included.

It is shown that one conventional interpretation of the success of current-algebra results requires the pion Regge trajectory to choose the Toller quantum number $M=0\mathrm{}$ at zero energy.

By measuring the branching ratio of $K_{\mu 3}^{}{}_{}{}^{+}$ relative to $K_{e3\mathrm{}}^{}{}_{}{}^{+}$ we have arrived at a value of $\xi \mathrm{}\left(0\right)=\frac{f_{-}\mathrm{}\left(0\right)\mathrm{}}{f_{+}\mathrm{}\left(0\right)\mathrm{}}=-0.08\mathrm{}\pm 0.15$. This is in good agreement with the Callan-Treiman relation.

$\overline{p}n$ and $\overline{p}p$ elastic scattering have been studied in the momentum-transfer region of $t=-0.15\mathrm{}$ to $t=-1.0\mathrm{}$ ${(\mathrm{B}\mathrm{e}\mathrm{V}/\mathit{c})}^2$ using the reaction $\overline{p}d\to \overline{p}n{p}_s or \overline{p}p{n}_s$, where $p_s$ and $n_s$ are spectators. The $\mathrm{pn}$ elastic cross section shows a dip at $t\sim -0.4\mathrm{}$ similar to that seen in the $\overline{p}p$ cross section. A comparison of the $\overline{p}n$ and $\overline{p}p$ cross sections shows that they appear to cross over each other, $t\sim -0.4\mathrm{}$ ${(\mathrm{B}\mathrm{e}\mathrm{V}/\mathit{c})}^2$.

A theory of currents is extended to include the symmetry-breaking effect without introducing extra currents. It is a nonspherical top in the internal space and found to be consistent with the mass-mixing model.

Fields of the order of 2×${10}^{-5\mathrm{}}$ G exist in the Perseus spiral arm in the direction of the radio source Cassiopeia A.

A heuristic discussion is given of the decay modes of high-spin particles lying on a linearly rising trajectory. Among other things, it is concluded that for particles with masses ≳3500 MeV ($J\gtrsim 12$), the total decay widths decrease with $J$ and go to zero approximately like ${\left(J\mathrm{In}J\right)}^{-0.28\mathrm{}{J}^{\frac{1}{2}}}$ as $J\to \infty$ ($0.28=2m_{\pi }{b}^{\frac{1}{2}}$, where $b\simeq 1$ ${\mathrm{GeV}}^{-1/2\mathrm{}}$ is asymptotic slope of the rising trajectory).

We calculate the charge asymmetry for the reaction ${\pi }^{-}p\to n{\pi }^{+}{\pi }^{-}{\pi }^0$ assuming $C$ invariance for the $\eta$ decay. We find that interference terms with a $3\pi$ background amplitude give a nonzero charge asymmetry. Assuming that the background in the $\eta$ mass region (10 MeV) is about 10% of the $\eta$ signal, we obtain a maximum asymmetry of about 2%, implying that the experimental asymmetry does not necessarily imply $C$ nonconservation.