Results of an experiment to measure muonic transition energies in separated lead isotopes are presented. The main results are as follows: 1. Muonic spectra of the four lead isotopes ${}_{}{}^{204}{}_{}{}^{}\mathrm{Pb}$, ${}_{}{}^{206}{}_{}{}^{}\mathrm{Pb}$, ${}_{}{}^{207}{}_{}{}^{}\mathrm{Pb}$, and ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ were studied with high resolution. No anomalous splitting or broadening of the lines was detected. The effect of the natural linewidth could, however, be observed. 2. An anomaly was found in the $3d$ fine structure splitting whose measured value turned out to be larger than the calculated value by nearly 300 eV (or 10 standard deviations) in all four isotopes. 3. Except for this anomaly, the lower levels of muonic lead can be described adequately with the help of a two-parameter Fermi distribution of the nuclear charge. There is no evidence in the x-ray data for a central depression in the nuclear density. 4. We determine the nuclear polarization in the ground state of all four isotopes of lead and find values ranging from -7.3 ± 2.2 to -10.1 ± 1.1 keV, which are somewhat higher than, but not inconsistent with, the best theoretical predictions of -6.8 ± 2.0 keV. This analysis is made possible by our ability to measure the weak transitions involving the $2s$ level. 5. We find a slight and regular increase in nuclear density, going from ${}_{}{}^{204}{}_{}{}^{}\mathrm{Pb}$ to ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$. The skin-thickness parameter $t$ appears, however, to be practically the same in all four isotopes measured.

RADIOACTIVITY ${}_{}{}^{204}{}_{}{}^{}\mathrm{Pb}$, ${}_{}{}^{206}{}_{}{}^{}\mathrm{Pb}$, ${}_{}{}^{207}{}_{}{}^{}\mathrm{Pb}$, ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$; muonic atoms, measured transition energies, levels up to $6f$; observed natural linewidth of $L$ lines; observed anomalous $\mathrm{fs}$ splitting of $3d$; deduced Fermi parameters; deduced nuclear polarization of ground state.

The shapes of the ground state transitions of ${}_{}{}^{42}{}_{}{}^{}\mathrm{K}$, ${}_{}{}^{142}{}_{}{}^{}\mathrm{Pr}$, ${}_{}{}^{86}{}_{}{}^{}\mathrm{Rb}$, and ${}_{}{}^{91}{}_{}{}^{}\mathrm{Y}$ were carefully measured in an intermediate-image $\beta$ ray spectrometer. The spectra were analyzed using exact electron radial wave functions of Bhalla and Rose. The measured shapes were compared to the theoretical predictions in terms of a linear fit of the form ($1+aW$) and a hyperbolic fit of the form ($1+\frac{b}{W}$). All the spectra were found to show a small order deviation from the simple unique shape. The shape factor term in the analysis of ${}_{}{}^{91}{}_{}{}^{}\mathrm{Y}$ was found to be $b=+0.027\mathrm{}\pm 0.007$. Some of the existing theoretical approaches in this direction have been discussed.

RADIOACTIVITY ${}_{}{}^{42}{}_{}{}^{}\mathrm{K}$, ${}_{}{}^{142}{}_{}{}^{}\mathrm{Pr}$, ${}_{}{}^{86}{}_{}{}^{}\mathrm{Rb}$, ${}_{}{}^{91}{}_{}{}^{}\mathrm{Y}$; measured $E_{\beta }$, $\beta$-spectrum shape.

The $\alpha$ spectra associated with $K$-shell electron shake-off in ${}_{}{}^{210}{}_{}{}^{}\mathrm{Po}$ and ${}_{}{}^{238}{}_{}{}^{}\mathrm{Pu}$ decay have been determined by $K$ x-ray-$\alpha$ coincidence measurements. Although the shapes of the spectra generally agree with the theoretical expectations, some discrepancies are observed. The abundances per $\alpha$ particle of the total $K$ electron shake-off effect were also determined in these measurements and found to be (1.65 ± 0.16) × ${10}^{-6\mathrm{}}$ for ${}_{}{}^{210}{}_{}{}^{}\mathrm{Po}$ and (0.83 ± 0.11) × ${10}^{-6\mathrm{}}$ for ${}_{}{}^{238}{}_{}{}^{}\mathrm{Pu}$. These results are also compared with theoretical predictions and further experimental and theoretical studies are suggested.

RADIOACTIVITY ${}_{}{}^{238}{}_{}{}^{}\mathrm{Pu}$, ${}_{}{}^{210}{}_{}{}^{}\mathrm{Po}$; measured $\alpha -k$ x-ray coin. Deduced electron shake-off abundances, energy distributions. Hartree-Fock-Slater treatment.

The $L_{\mathrm{I}}$-, $L_{\mathrm{II}}$-, $L_{\mathrm{III}}$-, and $M$-shell vacancy distributions accompanying electron shake-off in the $\alpha$ decay of ${}_{}{}^{210}{}_{}{}^{}\mathrm{Po}$ have been measured by $\alpha$-x-ray two parameter coincidence techniques. The ionization probabilities and the errors due to our measurements were (5.11±0.40, 0.62±0.06, and 1.50±0.19) × ${10}^{-4\mathrm{}}$ for the $L_{\mathrm{I}}$, $L_{\mathrm{II}}$, and $L_{\mathrm{III}}$ subshells, respectively, and (1.8±0.4) × ${10}^{-2\mathrm{}}$ for the $M$ shell. Possible errors in tabulated fluorescence and Coster-Kronig yields could increase the uncertainties to (1.7, 0.5, 0.8) × ${10}^{-4\mathrm{}}$ and 0.6 × ${10}^{-2\mathrm{}}$, respectively. The energies and peak shapes of the $\alpha$ groups in coincidence with $L\alpha$, $L\beta$, $L\gamma$, and $M$ x rays were also measured. The coincident groups were, respectively, 12.6±1.4, 13.8±1.4, 17.6±2.1, and 3.1±1.0 keV lower in energy than the ${}_{}{}^{210}{}_{}{}^{}\mathrm{Po}$ ${\alpha }_0$ peak. Theoretical calculations by Hansen are in closer agreement with the experimental values for the $L$ subshells than Migdal's theory, but discrepancies of about a factor of 2 still exist.

RADIOACTIVITY ${}_{}{}^{210}{}_{}{}^{}\mathrm{Po}$; measured $\alpha -L$ and $\alpha -M$ x-ray coin. Deduced $L_{\mathrm{I}}$, $L_{\mathrm{II}}$, $L_{\mathrm{III}}$, $M$ electron shake-off abundances, energy distribution.

Angular correlation measurements have been performed on 12 direct and 4 skip cascades in ${}_{}{}^{142}{}_{}{}^{}\mathrm{Ce}$, all involving the 641-keV $2^{+}$ → $0^{+}$ transition. The ${}_{}{}^{142}{}_{}{}^{}\mathrm{Ce}$ levels were populated in the ${\beta }^{-}$ decay of fission-product ${}_{}{}^{142}{}_{}{}^{}\mathrm{La}$ produced as a decay product of ${}_{}{}^{142}{}_{}{}^{}\mathrm{Xe}$ at the TRISTAN on-line isotope-separator facility. Spin-parity assignments or preferences have been made for all 13 excited levels below 3 MeV previously known to be populated in this decay. In addition, a new $0^{+}$ level is established at 2030 keV in ${}_{}{}^{142}{}_{}{}^{}\mathrm{Ce}$. These levels are described in terms of vibrations of a spherical nucleus. An alternate interpretation in terms of quasirotational bands is also presented.

RADIOACTIVITY ${}_{}{}^{142}{}_{}{}^{}\mathrm{La}$(from ${}_{}{}^{142}{}_{}{}^{}\mathrm{Xe}$ decay); measured $\gamma -\gamma \left(\theta \right)$. ${}_{}{}^{142}{}_{}{}^{}\mathrm{Ce}$ deduced $J$, $\pi$. Mass-separated ${}_{}{}^{142}{}_{}{}^{}\mathrm{La}$ activity.

Neutron-deficient ${}_{}{}^{127}{}_{}{}^{}\mathrm{Ba}$ has been formed through the positron decay of its precursor ${}_{}{}^{127}{}_{}{}^{}\mathrm{La}$ produced by the ${}_{}{}^{115}{}_{}{}^{}\mathrm{In}({}_{}{}^{16}{}_{}{}^{}\mathrm{O}, 4n){}_{}{}^{127}{}_{}{}^{}\mathrm{La}$ reaction. The $\gamma$-ray spectra have been studied using thin window intrinsic Ge and large volume Ge(Li) detectors. In contrast to the results reported earlier, $\gamma$ rays of energies (relative intensities) 66.0 (22 ± 2), 72.7 (9 ± 1), 114.8 (85 ± 5), 180.8 (100), 567.5 (2.9 ± 0.3), 577.6 (4.0 ± 0.4), 626.0 (2.2 ± 0.2), 682.0 (2.5 ± 0.3), 692.5 (2.8 ± 0.3), 1087.0 (4.4 ± 0.4), and 1203.0 (20 ± 2) keV have been observed to be associated with the decay of ${}_{}{}^{127}{}_{}{}^{}\mathrm{Ba}$. The half-life of ${}_{}{}^{127}{}_{}{}^{}\mathrm{Ba}$ has been established as 13.0 ± 0.5 min by following the decay of the photopeaks of intense $\gamma$ rays. The $\gamma -\gamma$ coincidence spectra were studied using two Ge(Li) detectors and a two parameter analyzer system. A revised decay scheme is proposed.

RADIOACTIVITY ${}_{}{}^{127}{}_{}{}^{}\mathrm{Ba}$ [from ${}_{}{}^{115}{}_{}{}^{}\mathrm{In}({}_{}{}^{16}{}_{}{}^{}\mathrm{O}, 4n){}_{}{}^{127}{}_{}{}^{}\mathrm{La}\stackrel{{\beta }^{+}\mathrm{EC}}{\to }{}_{}{}^{127}{}_{}{}^{}\mathrm{Ba}$]; measured $T_{\frac{1}{2}}$, $E_{\gamma }$, $I_{\gamma }$, $\gamma \gamma$ coinc; deduced ${}_{}{}^{127}{}_{}{}^{}\mathrm{Cs}$ levels, $J^{\pi }$; Ge(Li) and intrinsic Ge detectors.

High-spin levels of the deformed nucleus ${}_{}{}^{169}{}_{}{}^{}\mathrm{Hf}$ were deduced from $\gamma$-ray spectroscopy, both in beam following the heavy-ion reaction ${}_{}{}^{159}{}_{}{}^{}\mathrm{Tb}({}_{}{}^{14}{}_{}{}^{}\mathrm{N}, 4n\gamma ){}_{}{}^{169}{}_{}{}^{}\mathrm{Hf}$ and out of beam from $\beta$ decay of ${}_{}{}^{169}{}_{}{}^{}\mathrm{Ta}$. The half-life of ${}_{}{}^{169}{}_{}{}^{}\mathrm{Ta}$ was remeasured as 4.7 ± 0.7 m. Three rotational bands were assigned in ${}_{}{}^{169}{}_{}{}^{}\mathrm{Hf}$: ${\frac{5}{2}}^{-}\mathrm{}\left[523\right]\mathrm{}$ ground band, up to spin $\frac{31}{2}$; ${\frac{5}{2}}^{-}\mathrm{}\left[512\right]\mathrm{}$, 59.1 keV bandhead, up to spin $\frac{15}{2}$; and ${\frac{5}{2}}^{+}\mathrm{}\left[642\right]\mathrm{}$, ${\frac{7}{2}}^{+}$ bandhead at 28.80 keV, up to spin $\frac{41}{2}$ and tentatively up to spin $\frac{49}{2}$. The ${\frac{7}{2}}^{+}$ bandhead of the ${\frac{5}{2}}^{+}\mathrm{}\left[642\right]\mathrm{}$ band is isomeric and decays with a half-life of ${82}_{-15\mathrm{}}^{+40\mathrm{}}$ ns to the ground state. The $g$ factors in the negative parity bands were deduced from the measured angular distributions and branching ratios and compared to the predictions of the Nilsson model. Both this test and the systematics of the moments of inertia confirm the proposed assignments. The ${\frac{5}{2}}^{+}\mathrm{}\left[642\right]\mathrm{}$ band (originating in the $i_{\frac{13}{2}}$ shell-model state) is strongly perturbed. This band does not backbend although the ${}_{}{}^{168}{}_{}{}^{}\mathrm{Hf}$ core does at a lower rotational angular momentum than attained in ${}_{}{}^{169}{}_{}{}^{}\mathrm{Hf}$. The consequence of this observation for the explanation of backbending is discussed. The mixing amplitudes in the positive parity band are compared with the predictions of Pyatov's theory.

NUCLEAR REACTIONS ${}_{}{}^{159}{}_{}{}^{}\mathrm{Tb}({}_{}{}^{14}{}_{}{}^{}\mathrm{N}, 4n\gamma )$, $E=56-92\mathrm{}$ MeV; measured $E_{\gamma }$, $I_{\gamma }\left(\theta \right)$, $\gamma \gamma$ coin, $T_{\frac{1}{2}}$ of 28.80 keV level. ${}_{}{}^{169}{}_{}{}^{}\mathrm{Hf}$ deduced levels, $J$, $\pi$, $K$, $g$, $\frac{{\hslash }^2}{2\mathcal{I}}$.

RADIOACTIVITY ${}_{}{}^{169}{}_{}{}^{}\mathrm{Ta}$; measured $T_{\frac{1}{2}}$, $E_{\gamma }$, $I_{\gamma }$ ${}_{}{}^{169}{}_{}{}^{}\mathrm{Hf}$ deduced levels, $J$, $\pi$, $K$.

Off-shell changes are generated in the ${}_{}{}^1{}_{}{}^{}S_0^{}{}_{}{}^{}$ nucleon-nucleon interaction using the Reid soft-core potential and unitary transformations of short range. Charge symmetry is assumed for the nuclear force. The same off-shell variations of the Reid potential are employed as the hadronic part of the proton-proton interaction and as neutron-neutron interaction. The Reid potential fits the experimental proton-proton data. It also accounts for the neutron-neutron scattering length with satisfying accuracy. The off-shell behavior of the Reid potential is varied in two different ways. First, off-shell changes are performed which preserve the fit to the proton-proton data. Most transformed potentials of the type attempted here are unable to yield the correct experimental value of the neutron-neutron scattering length and have to be rejected. A simple practical rule is given according to which the off-shell changes consistent with the neutron-neutron scattering length can be selected. Second, off-shell changes are performed which leave the neutron-neutron scattering length unaltered. Transformed potentials of this type have usually been employed in nuclear-structure calculations. The potentials which exhibit large off-shell effects in nuclear structure are unable to account for the experimental proton-proton data. Their off-shell effects are therefore of no physical significance, and the potentials have to be rejected. A simple practical rule is given according to which the off-shell changes consistent with the experimental proton-proton data can be selected.

We present a simple model for three and four particle cluster states in light nuclei. These states are considered as bound states and single particle resonances of a cluster-core potential, which is obtained by folding the cluster and core mass densities. We calculate some properties of these states in ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$, such as the rms radii, $B\left(E2\mathrm{}\right)\mathrm{}$ values, $\alpha$-decay widths, and energy spectra. Good agreement with available data is obtained and some predictions are made for $B\left(E2\mathrm{}\right)\mathrm{}$ values in the $K^{\pi }=0^{-}$ bands in ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$. This model is also used to interpret recent heavy ion three particle transfer data. Dynamical support is offered for high spin assignments in ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$ and ${}_{}{}^{15}{}_{}{}^{}\mathrm{O}$ previously based on kinematical considerations.

NUCLEAR STRUCTURE ${}_{}{}^{15}{}_{}{}^{}\mathrm{N}$, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$; calculated energies, $J$, $\pi$, $B\left(E2\mathrm{}\right)\mathrm{}$ values, $\alpha$ widths, radii in cluster model with folded potential.

The magnetic susceptibility of neutron matter is calculated in Brueckner theory with the Reid hard core potential and the Mongan nonlocal separable potential. The rearrangement contribution, calculated with suitable approximations, turns out to be important at the densities above normal nuclear density. The results obtained for the Reid hard core potential are similar to those obtained previously for the Reid soft-core potential. No evidence of a transition to ferromagnetic state is found.

The positive parity levels in ${}_{}{}^{44}{}_{}{}^{}\mathrm{Ti}$ below 4.2 MeV and many of the $E2\mathrm{}$ transitions between them are fairly successfully explained using a soft asymmetric rotor model. A brief discussion of suggested negative parity states is also given.

NUCLEAR STRUCTURE ${}_{}{}^{44}{}_{}{}^{}\mathrm{Ti}$; calculated levels, $B\left(E2\mathrm{}\right)\text{'}\mathrm{s}$. Asymmetric rotor model with vibrations.

The ${\frac{19}{2}}^{-}\to {\frac{7}{2}}^{-}$ $E6\mathrm{}$ transition in ${}_{}{}^{53}{}_{}{}^{}\mathrm{Fe}$ is calculated in a model including all basis states of the configurations ${{\left(f_{\frac{7}{2}}\right)}^{13}}_{\mathrm{IT}}$ and ${[{{\left(f_{\frac{7}{2}}\right)}^{12}}_{I^{\prime }{T}^{\prime }}\times f_{\frac{5}{2}}]}_{\mathrm{IT}}$. Several interactions, which yield the observed amount of $f_{\frac{5}{2}}$ configuration mixing, have been considered. In all cases an effective charge $\delta \cong -0.4\mathrm{}$ is needed to fit experiment (where $e_p=1+\delta$, $e_n=\delta$).

NUCLEAR STRUCTURE ${}_{}{}^{53}{}_{}{}^{}\mathrm{Fe}$; calculated $B\left(E6\mathrm{}\right)\mathrm{}$. Model space ${\left(f_{\frac{7}{2}}\right)}^{13}$ and ${\left(f_{\frac{7}{2}}\right)}^{12}{f}_{\frac{5}{2}}$.

Relativistic corrections to the electric deuteron form factors are rederived within the framework of particle quantum mechanics. In addition to the kinematic corrections there are necessarily dynamic corrections that are substantially larger. For local potentials the results are identical to those derived by Gross from field theory. The reasons for the agreement of two apparently very different theories are examined in detail. The quantitative aspect of these results are illustrated by several numerical examples. A precise measurement of the polarization cross section for $q^2<13\mathrm{}$ ${\mathrm{fm}}^{-2\mathrm{}}$ could serve to significantly restrict the shape of admissible deuteron wave functions.

NUCLEAR STRUCTURE Calculation ${}_{}{}^2{}_{}{}^{}\mathrm{H}$ electric form factors, dependence on $N-N$ potential, relativistic effects important.

Penetrability is computed for a double-hump potential barrier of Strutinsky type, where both incident and reflected waves in the first well are taken into consideration to include the prefission state of a nucleus. Results are discussed and comparison is made with the work of Cramer and Nix.

NUCLEAR REACTIONS Fission penetrability through two-peaked potential barriers, first well taken into consideration; comparison with Cramer and Nix.

$\gamma$-ray resonance fluorescence of three magnetic dipole states in ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$ at 9827 ± 3, 9967 ± 3, and 10711 ± 3 keV was observed using bremsstrahlung and a 100 ${\mathrm{cm}}^3$ Ge(Li) detector. The measured intensity ratios to the first excited state and the ground state were found to be ${0.28}_{-0.18\mathrm{}}^{+0.26\mathrm{}}$, ${0.45}_{-0.13\mathrm{}}^{+0.16\mathrm{}}$, and ${0.23}_{-0.06\mathrm{}}^{+0.07\mathrm{}}$, respectively. Integrated scattering cross sections and decay widths of these levels were determined relative to the known ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}(\gamma , x{\gamma }^{\prime })$ cross section.

NUCLEAR REACTIONS ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}(\gamma , \gamma )$, $E_{\gamma }<23.5\mathrm{}$ MeV, bremsstrahlung; measured $E_{\gamma }$, $I_{\gamma }$; ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$ deduced levels, ${\Gamma }^0$, ${\Gamma }^1$, $\gamma$ branching.

The volume integrals of the absorptive part of proton optical potentials are evaluated for various combinations of the form (surface and/or volume), depth, and geometry of the absorptive potential which have been found to give comparable fits to the data for different targets at a particular energy, and also at different energies. It is concluded that the total (sum of the surface and volume absorptions) volume integral per particle of the absorptive part of the proton optical potential is a well-defined quantity in that it is practically independent of (a) the form (surface and/or volume absorption) and the geometrical parameters employed, (b) the mass number of the target nucleus at each energy, and (c) the incident proton energy in the range 10-60 MeV. Examination of the presently available results yields a value 115 ± 15 MeV ${\mathrm{fm}}^3$ for this quantity. The energy independence of these volume integrals is in contrast with the marked energy dependence observed for the volume integrals of the real part of the optical potentials.

NUCLEAR REACTIONS Optical model analyses of proton scattering data, studied volume integral of the absorptive potential; $E_p=9.8-61.4\mathrm{}$ MeV; target $A=40-208\mathrm{}$.

We present the results of a calculation of the recently measured asymmetry of the 110-keV $\gamma$ ray emitted in the ${\mathrm{½}}^{-}$ → ${\mathrm{½}}^{+}$ transition in ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}$. Our results, for the usual choice of parity nonconserving potential, are consistent with the observed asymmetry.

NUCLEAR STRUCTURE ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}$. Calculated parity mixtures of ${\mathrm{½}}^{+}$ g.s. and ${\mathrm{½}}^{-}$ first excited state. Deduced asymmetry of 110-keV $\gamma$ ray. Conventional PNC interaction. Short range correlations.

A continuum shell-model calculation of the $E2\mathrm{}$ strength in ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ is presented in which an $E2\mathrm{}$ resonance at ∼ 27 MeV excitation energy is predicted. The results are consistent with experimental data on photoproton angular distributions and polarizations.

NUCLEAR REACTIONS ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(\gamma , p)$, $E=16-30\mathrm{}$ MeV; calculated $E2\mathrm{}$ strength, effect on angular distributions and polarizations.

An isomer in ${}_{}{}^{145}{}_{}{}^{}\mathrm{Gd}$ at 27.3 keV is reported with a half-life of 11.5 ± 0.3 nsec and an internal conversion coefficient ${\alpha }_L=16.9\mathrm{}\pm 1.4$. This state is described as substantially the $\nu d_{\frac{3}{2}}$ single-neutron state which is fed by the ${}_{}{}^{145}{}_{}{}^{}\mathrm{Gd}_{}^{m_2}{}_{}{}^{}$ $\nu h_{\frac{11}{2}}$ isomer and which deexcites through the $\nu s_{\frac{1}{2}}$ ground state. The isomeric transition from ${}_{}{}^{145}{}_{}{}^{}\mathrm{Gd}_{}^{m_1}{}_{}{}^{}$ is found to be 99.2 ± 0.2% $M1+0.8\mathrm{}\pm 0.2\%$ $E2\mathrm{}$, indicating a hindrance factor of 100 in the $M1\mathrm{}$ and an enhancement factor of 40 in the $E2\mathrm{}$ over the single-particle estimates. Recent information on the $N=81\mathrm{}$ ${\frac{11}{2}}^{-}$ isomers is presented for ${}_{}{}^{133}{}_{}{}^{}\mathrm{Te}$ through ${}_{}{}^{147}{}_{}{}^{}\mathrm{Dy}$ showing the systematic changes in experimental energies and $M4\mathrm{}$ matrix elements.

RADIOACTIVITY ${}_{}{}^{145}{}_{}{}^{}\mathrm{Gd}_{}^{m_1}{}_{}{}^{}$; measured $T_{\frac{1}{2}}$, $E_{\gamma }$, ICC, $\gamma \gamma$ coin; deduced $B\left(M1\mathrm{}\right)\mathrm{}$, $B\left(E2\mathrm{}\right)\mathrm{}$. Ge(Li) detector, 550 eV at 127 keV; Ge(Li) detector, 2.0 keV at 1332 keV. ${}_{}{}^{133}{}_{}{}^{}\mathrm{Te}_{}^{m_1}{}_{}{}^{}$, ${}_{}{}^{135}{}_{}{}^{}\mathrm{Xe}_{}^{m_2}{}_{}{}^{}$, ${}_{}{}^{137}{}_{}{}^{}\mathrm{Ba}_{}^{m_2}{}_{}{}^{}$, ${}_{}{}^{139}{}_{}{}^{}\mathrm{Ce}_{}^{m_2}{}_{}{}^{}$, ${}_{}{}^{141}{}_{}{}^{}\mathrm{Nd}_{}^{m_2}{}_{}{}^{}$, ${}_{}{}^{143}{}_{}{}^{}\mathrm{Sm}_{}^{m_2}{}_{}{}^{}$, ${}_{}{}^{145}{}_{}{}^{}\mathrm{Gd}_{}^{m_2}{}_{}{}^{}$, ${}_{}{}^{147}{}_{}{}^{}\mathrm{Dy}_{}^{m_2}{}_{}{}^{}$; deduced $B\left(M4\mathrm{}\right)\mathrm{}$.