Recent Articles

Production and knockout of nucleon isobars from helium by 5 GeV pions

S. Jonsson, S. Dahlgren, T. Ekelöf, P. Grafström, E. Hagberg, A. Hallgren, S. Kullander, B. Badełek, J. Nassalski, J. Berthot, P. Cotte, C. Doré, L. Meritet, M. Querrou, F. Vazeille, J. P. Burq, M. Chemarin, M. Chevallier, B. Ille, M. Lambert, G. Fäldt, and P. C. Gugelot

Phys. Rev. C 21, 306 (1980) - Published 1 January, 1980

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Using both recoil and fast-particle spectrometers, the reaction $π^{-} + {}^{4}{He} \to π^{-} + {}^{3}H + x$ has been measured for triton momenta in the region 0.24-0.60 GeV/c. The experimental spectra are presented as functions of triton momentum and angle and of mass of the unmeasured object. In the theoretical analysis it is assumed that the final state can be reached via quasielastic scattering from $N^{*} {}^{3}H$ states and via $N^{*}$ productions from the $p {}^{3}H$ state of helium. The most credible of three investigated $p {}^{3}H$ wave functions requires one percent of $N^{*} {}^{3}H$ states in the mass range 1.08-1.80 GeV/ $c^{2}$ .

NUCLEAR REACTIONS ${}^{4}{He} (π^{-}, π^{-} x) t$ , $E = 5$ GeV, $E_{t} > 10$ MeV measured $σ (θ_{t}, m_{x})$ , $σ (m_{x}, E_{t})$ , $σ (m_{x}, θ_{t})$ ; deduced $p - t$ wave- $f$ , $x - t$ prob. $1.1 < m_{x} < 1.8$ GeV. $p (π^{-}, π^{-}) x$ , $E = 5$ GeV, measured $σ (m_{x})$ .

Some convergence tests on medium-energy pion-deuteron elastic scattering amplitudes

A. S. Rinat and Y. Starkand

Phys. Rev. C 21, 324 (1980) - Published 1 January, 1980

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With the exact solution of a covariant multiple scattering model for elastic pion-deuteron scattering as a standard, we test (a) the convergence of the multiple scattering series and (b) the sufficiency of the first order and on-shell second order scattering amplitudes.

NUCLEAR REACTIONS $π d$ elastic scattering; convergence tests of several expansions.

Decays of mass-separated ${}^{139}{Xe}$ and ${}^{139}{Cs}$

M. A. Lee and W. L. Talbert, Jr.

Phys. Rev. C 21, 328 (1980) - Published 1 January, 1980

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The $β$ and subsequent $γ$ decays of ${}^{139}{Xe}$ and ${}^{139}{Cs}$ have been studied using an on-line isotope separator system. Ge(Li) $γ$ -ray singles and Ge(Li)-Ge(Li) $γ - γ$ coincidence measurements were used to construct level schemes for ${}^{139}{Cs}$ and ${}^{139}{Ba}$ . For the decay of ${}^{139}{Xe}$ , 213 of 230 observed $γ$ -ray transitions have been placed in a level scheme for ${}^{139}{Cs}$ with 55 excited states. For the decay of ${}^{139}{Cs}$ , 167 of 179 observed $γ$ -ray transitions are placed in a level scheme for ${}^{139}{Ba}$ with 59 excited states. The $Q$ values for the $β$ decays of ${}^{139}{Xe}$ and ${}^{139}{Cs}$ were determined from Ge(Li) plastic scintillator coincidence measurements as 5.02±0.06 and 4.29±0.07 MeV, respectively. Ground-state $β$ branches were deduced for the ${}^{139}{Xe}$ and ${}^{139}{Cs}$ decays using relative $γ$ -ray intensities. Spin and parity assignments for levels in ${}^{139}{Cs}$ and ${}^{139}{Ba}$ have been deduced using $β$ -decay $log ft$ values, $γ$ -ray transition rates, and reaction data in the literature. Interpretation of some of the energy levels is made from a shell-model viewpoint.

RADIOACTIVITY ${}^{139}{Xe}$ , ${}^{139}{Cs}$ [from ${}^{235}U (n, f)$ ]; measured $E_{γ}$ , $I_{γ}$ , $γ - γ$ coin., $Q_{β}$ , Ge(Li), and plastic scint. detectors. ${}^{139}{Cs}$ , ${}^{139}{Ba}$ deduced levels, $J$ , $π$ , $log ft$ . ${}^{139}{Xe}$ , ${}^{139}{Cs}$ deduced ground-state $β$ branches. Mass-separated ${}^{139}{Xe}$ activity.

Effect of chemical state on the decay constant of ${}^{99}{Tc}^{m}$

H. Mazaki, S. Kakiuchi, T. Mukoyama, and M. Matsui

Phys. Rev. C 21, 344 (1980) - Published 1 January, 1980

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The chemical effect on the decay constant $λ$ of ${}^{99}{Tc}^{m}$ has been investigated by means of the differential method. Two combinations of sources, ${Tc}_{2}$ $S_{7}$ -Tc $O^{-}_{4}$ and ${Tc}_{2}$ $S_{7}$ -metallic Tc, were measured, of which the results are $λ (Tc O_{4}^{-}) - λ ({Tc}_{2} S_{7}) = (31.8 \pm 0.7) \times 10^{- 4} λ ({Tc}_{2} S_{7})$ and $λ ({Tc}_{2} S_{7}) - λ (metal) = (5.6 \pm 0.3) \times 10^{- 4} λ (metal)$ . The present results agree well with those presented by Bainbridge et al.

RADIOACTIVITY ${}^{99}{Tc}^{m}$ ; measured $T_{\frac{1}{2}}$ , double ionization chamber, chemical effect.

$K$ -shell ionization in the electron and positron decays of ${}^{64}{Cu}$

G. Schupp and M. S. Freedman

Phys. Rev. C 21, 348 (1980) - Published 1 January, 1980

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The total $K$ -ionization probabilities accompanying the $β^{+}$ and $β^{-}$ decays of ${}^{64}{Cu}$ , $P_{K} (β^{+})$ , and $P_{K} (β^{-})$ were determined from coincidence and singles $K$ x-ray spectra of Ni and Zn to be (13.2 ± 0.8) × $10^{- 4}$ and (11.9 ± 0.8) × $10^{- 4}$ , respectively, using a high resolution Si(Li) photon spectrometer. $\frac{P_{K} (β^{+})}{P_{K} (β^{-})}$ was measured directly and independently to be 1.26 ± 0.10, in fair agreement with the ratio of the separate measurements 1.11 ± 0.10. While the average ratio is in agreement with the shaking theory of Isozumi, Shimizu, and Mukoyama, the individual values are a factor of ∼ 1.5 larger than their predictions. A similar approximately twofold excess over the Isozumi, Shimizu, and Mukoyama hydrogenic-wave-function-based predictions has been observed for almost all cases of $K$ -shell shaking in $β^{-}$ decay, and now also for this first reported measurement in $β^{+}$ decay. The measured ratio is the first experimental evidence affirming the previously recognized and acknowledged error of a factor of 2 (excess) for shakeoff in $β^{-}$ decay (but not in $β^{+}$ decay) in the theory of Law and Campbell. No evidence was found for a postulated Ni $K$ vacancy production mechanism, in which the positron annihilates with a $K$ electron internal to the parent atom, exceeding a few percent of $K$ shaking in positron decay.

RADIOACTIVITY Measured Ni and Zn $K$ x-rays in singles and coin. in $β^{+}$ and $β^{-}$ decays of ${}^{64}{Cu}$ ; deduced $K$ -ionization probabilities.

Nuclear orientation study of ${}^{182}W$ in the decay of ${}^{182}{Re}$ isomers

R. Spanhoff, M. J. Canty, H. Postma, and G. Mennenga

Phys. Rev. C 21, 361 (1980) - Published 1 January, 1980

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The decay schemes of the two ${}^{182}{Re}$ isomers (64 h and 13 h) have been studied mainly with the nuclear orientation technique. New information, especially on the high-spin states of ${}^{182}W$ , populated in the decay of the 64-h ${}^{182}{Re}$ isomer, has been obtained. Many spin assignments of ${}^{182}W$ levels have either been verified or made. Above 1500 keV spins of 14 levels have been derived uniquely or with a high level of confidence. The 64 h( $7^{+}$ ) and 13 h( $2^{+}$ ) isomers of ${}^{182}{Re}$ are described in terms of the coupling of the Nilsson states 5/ $2^{+}$ [402] and 9/ $2^{+}$ [624] for the odd proton and odd neutron. The experimental absolute values of their nuclear moments $μ (7^{+}) = 2.79 \pm 0.06 μ_{N}$ and $μ (2^{+}) = 3.11 \pm 0.33 μ_{N}$ are well understood on the basis of this coupling.

RADIOACTIVITY ${}^{182}{Re}$ (64 h and 13 h isomers); measured $I_{γ}$ ( $θ$ ) oriented nuclei; $γ - γ$ coin. ${}^{182}W$ deduced $J^{π}$ , mixing ratios; 2-qp assignments; ${}^{182}{Re}$ deduced magnetic moments; Nilsson assignments.

Interplay between mesonic-exchange corrections and nuclear structure in the weak transitions ${}^{16}O$ ( $0^{+}$ ) ⇄ ${}^{16}N$ ( $0^{-}$ )

W. K. Cheng, B. Lorazo, and B. Goulard

Phys. Rev. C 21, 374 (1980) - Published 1 January, 1980

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The ratio of the muon-capture rate to the beta-decay rate in the weak transitions ${}^{16}O$ ( $0^{+}$ ; ground state) ⇄ ${}^{16}N$ ( $0^{-}$ ; 120 keV) is analyzed in terms of the interplay between mesonic-exchange currents and configuration mixing. It is shown that, up to date, various approaches are too preliminary to yield a quantitative conclusion on the role of mesonic-exchange currents contribution.

RADIOACTIVITY ${}^{16}N (0^{-}; 120 KeV) \to {}^{16}O (0^{+}; ground state) + e^{-} {\bar{ν}}_{e}$ , muon capture ${}^{16}O (0^{+}; ground state) + μ^{-} \to {}^{16}N (0^{-}; 120 KeV) + ν_{μ}$ , theoretical analysis via "elementary particle" and "microscopic" treatments.

Identification and decay of neutron-rich ${}^{39}S$

John C. Hill, R. F. Petry, and K. H. Wang

Phys. Rev. C 21, 384 (1980) - Published 1 January, 1980

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The previously unreported decay of ${}^{39}S$ has been studied from sources prepared in the ${}^{40}{Ar} (n, 2 p) {}^{39}S$ reaction using intermediate energy neutrons. The ${}^{39}S$ half-life was measured to be 11.5 ± 0.5 sec. On the basis of results from $γ$ singles and coincidence measurements, all six $γ$ rays observed in ${}^{39}S$ decay were placed in a level scheme for ${}^{39}{Cl}$ consisting of excited states at 397, 1301, 1697, 1785, and 2571 keV. Our levels are compared with results from reaction studies and shell-model calculations and a discussion of the possible nature of the negative-parity states is given.

RADIOACTIVITY ${}^{39}S$ [from ${}^{40}{Ar} (n, 2 p) {}^{39}S$ ], intermediate energy neutrons; measured $T_{\frac{1}{2}}$ , $E_{γ}$ , $I_{γ}$ , $γ γ$ -coin. Ge(Li) detectors; ${}^{39}{Cl}$ deduced levels, $J$ , $π$ , $log ft$ . Radiochemistry.

Time-dependent Hartree-Fock theory and the Rayleigh-Ritz principle

B. G. Giraud, B. Grammaticos, and M. Rosina

Phys. Rev. C 21, 391 (1980) - Published 1 January, 1980

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The trial function $Ψ$ in the Rayleigh-Ritz variational principle, $δ 〈 Ψ | (H - E) | Ψ 〉 = 0$ , is restricted to a continuous superposition of Slater determinants $Φ (t)$ , $Ψ = \int dtf (t) Φ (t)$ . The variation $δ$ is performed upon the path { $Φ (t)$ }. It is found that time-dependent Hartree-Fock solutions $Φ (t)$ are optimal choices for making the Rayleigh-Ritz functional stationary.

NUCLEAR STRUCTURE TDHF paths best choices for generator coordinate method with Rayleigh-Ritz functional.

Macroscopic description of isoscalar giant multipole resonances

J. Rayford Nix and Arnold J. Sierk

Phys. Rev. C 21, 396 (1980) - Published 1 January, 1980

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On the basis of a simple macroscopic model, we calculate the isoscalar giant-resonance energy as a function of mass number and multipole degree. The restoring force is determined from the distortion of the Fermi surface, and the inertia is determined for the incompressible, irrotational flow of nucleons with unit effective mass. With no adjustable parameters, the resulting closed expression reproduces correctly the available experimental data, namely the magnitude and dependence upon mass number of the giant quadrupole energy and the magnitude of the giant octupole energy for ${}^{208}{Pb}$ . We also calculate the isoscalar giant-resonance width as a function of mass number and multipole degree for various macroscopic damping mechanisms, including two-body viscosity, one-body dissipation, and modified one-body dissipation. None of these damping mechanisms reproduces correctly all features of the available experimental data, namely the magnitude and dependence upon mass number of the giant quadrupole width and the magnitude of the giant octupole width for ${}^{208}{Pb}$ .

NUCLEAR STRUCTURE ${}^{208}{Pb}$ ; calculated isoscalar giant-resonance energy and width as functions of mass number and multipole degree and compared with experimental values. Boltzmann equation, distorted Fermi surface, irrotational flow, two-body viscosity, one-body dissipation, wall formula, multiple reflections, modified one-body dissipation, nuclear fission, heavy-ion reactions.

Shell-model description of the nucleus ${}^{132}{Te}$

J. Sau, K. Heyde, and R. Chéry

Phys. Rev. C 21, 405 (1980) - Published 1 January, 1980

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Microscopic proton two-particle neutron two-hole shell-model calculations have been performed for the nucleus ${}_{52}^{132}{Te}_{80}$ . Evidence results for the existence of a weak-coupling pattern obtained by coupling nuclear low-lying levels in ${}_{52}^{134}{Te}_{82}$ and ${}_{50}^{130}{Sn}_{80}$ . Electromagnetic properties for the most important low-lying levels in ${}_{52}^{132}{Te}_{80}$ are also calculated and compared with existing experimental data. The limitations of proton two-particle- (neutron two-hole-) core coupling calculations are also exhibited when proton and/or neutron number only deviates from closed shell configurations by a small (±2) number.

NUCLEAR STRUCTURE ${}_{52}^{132}{Te}_{80}$ shell-model 2p - 2h calculations, electromagnetic properties, $T_{\frac{1}{2}}$ , comparison with 2p (2h)-core coupling macroscopic calculations.

Method for calculating matrix elements for shell-model calculations

J. Sau and K. Heyde

Phys. Rev. C 21, 419 (1980) - Published 1 January, 1980

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Using a particular representation of the nuclear two-body interaction, simplifications can be obtained in calculating matrix elements of the nuclear interaction. The wave functions are constructed from particles of different type (protons and neutrons, particle and hole excitations, bosons of different multipolarity, fermionboson coupled systems). A general expression for nuclear matrix elements is derived. Moreover, in the particular case of up to four particles of each type, we give detailed expressions of the matrix elements.

NUCLEAR STRUCTURE General derivation of two-body matrix elements, application to two-particle-two-hole systems, explicit expressions for up to four particle systems.

Properties of Griffin-Hill-Wheeler spaces. II. One-parameter and two-conjugate-parameter families of generator states

E. J. V. de Passos and A. F. R. de Toledo Piza

Phys. Rev. C 21, 425 (1980) - Published 1 January, 1980

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The properties of the subspaces of the many-body Hilbert space, which are associated with the use of the generator coordinate method in connection with one-parameter and with two-conjugate-parameter families of generator states, are examined in detail. These families are obtained by letting unitary displacement operators, having as generators canonical operators $\hat{P}$ and $\hat{Q}$ , defined in the many-body Hilbert space, act on a reference state. We show that natural orthonormal base vectors in each case are immediately related to Peierls-Yoccoz and Peierls-Thouless projections, respectively. Through the formal consideration of a canonical transformation to collective, $\hat{P}$ and $\hat{Q}$ , and intrinsic degrees of freedom, we discuss in detail the properties of the generator-coordinate-method subspaces with respect to the kinematical separation of these degrees of freedom. An application is made, using the ideas developed in this paper, (a) to translations, (b) to illustration of the qualitative understanding of the content of existing generator-coordinate-method calculations of giant resonances in light nuclei, and (c) to the definition of appropriate asymptotic states in current generator-coordinate-method descriptions of scattering.

NUCLEAR STRUCTURE Properties of generator coordinate representations. Qualitative application to giant resonances and scattering.

RAPID COMMUNICATION

Magnetic moments of ${}^{125}{Te}^{m}$ , ${}^{127}{Te}^{m}$ , and ${}^{129}{Te}^{m}$

R. Geerts, C. Nuytten, E. Schoeters, R. Silverans, and L. Vanneste

Phys. Rev. C 21, 439(R) (1980) - Published 1 January, 1980

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Nuclear magnetic resonance measurements on oriented nuclei have been performed for ${}^{125}{Te}^{m}$ , ${}^{127}{Te}^{m}$ , and ${}^{129}{Te}^{m}$ using low temperature nuclear orientation and conversion electron detectiòn. The magnetic moments of the ${11 / 2}^{-}$ isomeric states have been extracted as $μ = - 0.985 (6)$ for ${}^{125}{Te}^{m}$ , $μ = - 1.041 (6)$ for ${}^{127}{Te}^{m}$ , and $μ = - 1.091 (7)$ for ${}^{129}{Te}^{m}$ .

NUCLEAR STRUCTURE ${}^{125}{Te}^{m}$ , ${}^{127}{Te}^{m}$ , and ${}^{129}{Te}^{m}$ : magnetic moments.

Tensor analyzing powers in ${}^{4}{He} (d, d) {}^{4}{He}$ elastic scattering between 17 and 45 MeV

E. J. Stephenson, H. E. Conzett, R. M. Larimer, B. T. Leemann, R. Roy, and P. von Rossen

Phys. Rev. C 21, 44 (1980) - Published 1 January, 1980

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Angular distribution measurements were made of the differential cross section $\frac{d σ}{d Ω}$ and the tensor analyzing powers $A_{yy}$ and $A_{xx}$ in $d - α$ elastic scattering between deuteron beam energies of 17 and 45 MeV. The analyzing powers are large over this energy range and suitable for use as a secondary polarization standard. The use of rapid spin flip on the polarized ion source appreciably reduced experimental errors.

NUCLEAR REACTIONS ${}^{4}{He} (d, d) {}^{4}{He}$ elastic scattering, $E_{d} = 17 - 45$ MeV; measured $\frac{d σ}{d Ω}$ , tensor analyzing powers $A_{yy}$ and $A_{xx}$ .

RAPID COMMUNICATION

Systematics of ( $α, {}^{12}C$ ) in light nuclei and implications for multi- $α$ -cluster transfer reactions

F. D. Becchetti, K. T. Hecht, J. Jänecke, D. Overway, and G. Kekelis

Phys. Rev. C 21, 444(R) (1980) - Published 1 January, 1980

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The ${}^{16}O$ , ${}^{24, 26}{Mg}$ , ${}^{28}{Si}$ , ${}^{32}S$ , ${}^{40}{Ca}$ ( $α, {}^{12}C$ ) reactions have been studied at $E_{α} = 90.3$ MeV. The observed cross sections fall off rapidly with increasing target mass $A_{t}^{- 5 \pm 1}$ , consistent with predictions for direct ${}^{8}{Be}$ or successive $α$ transfer employing first-order S $U_{3}$ cluster overlap amplitudes, although other, more complicated mecanisms cannot be excluded. The results are extrapolated and estimates of multi- $α$ -cluster transfer cross sections in heavy nuclei, such as those proposed to synthesize superheavy elements, are obtained.

NUCLEAR REACTIONS ${}^{16}O$ , ${}^{24, 26}{Mg}$ , ${}^{28}{Si}$ , ${}^{40}{Ca}$ ( $α, {}^{12}C$ ); measured $σ (E_{{}^{12}C}, 15 °)$ ; inferred target-mass dependence; extrapolated multi- $α$ -cluster transfer cross sections for heavy nuclei relevant for synthesis of superheavy elements.

RAPID COMMUNICATION

Analysis of the backbending effect in ${}^{166}{Yb}$ , ${}^{168}{Yb}$ , and ${}^{170}{Yb}$ within the Hartree-Fock-Bogolyubov cranking method

S. Ćwiok, W. Nazarewicz, J. Dudek, and Z. Szymański

Phys. Rev. C 21, 448(R) (1980) - Published 1 January, 1980

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The three ytterbium isotopes, i.e., ${}^{166}{Yb}$ in which the backbending is experimentally observed, ${}^{168}{Yb}$ in which it is not, and ${}^{170}{Yb}$ in which it is observed again, are studied by applying the Hartree-Fock-Bogolyubov cranking method. The model Hamiltonian used contains a deformed Woods-Saxon potential and the pairing force term. In contrast to some other versions of the method, the solutions obtained here are pairing-self-consistent, i.e., both the gap parameter and the Fermi energy are obtained through the iterative procedure. Quadrupole and hexadecapole deformation degrees of freedom are taken into account. The characteristic pattern of yrast lines for the three ytterbium isotopes is reproduced with no adjustments of parameters.

NUCLEAR STRUCTURE ${}^{166, 168, 170}{Yb}$ ; calculated moments of inertia, Hartree-Fock-Bogolyubov cranking method.

RAPID COMMUNICATION

Angular dependence of neutron polarization for the ${}^{2}H (d, n) {}^{3}{He}$ reaction for deuteron energies less than 500 keV

R. B. Galloway and A. S. Hall

Phys. Rev. C 21, 453(R) (1980) - Published 1 January, 1980

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The angular dependence of the polarization of the neutrons from the reaction ${}^{2}H (d, n) {}^{3}{He}$ has been determined for 290 keV and 460 keV incident deuterons. These polarization distributions differ in the 30° to 50° lab region from the previous measurement in this energy region and are discussed in relation to both the low energy theory of the reaction and the approach cross-section description.

NUCLEAR REACTIONS ${}^{2}H (d, n)$ , $E = 290, 460$ keV; measured polarization $P (θ)$ .

RAPID COMMUNICATION

${}^{147}{Tb}$ and proton single particle states near $Z = 64$

R. R. Chasman

Phys. Rev. C 21, 456(R) (1980) - Published 1 January, 1980

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Proton single particle level spacings near $Z = 64$ are deduced from an analysis of low-lying levels in ${}^{145}{Eu}$ , using a pairing force as the residual interaction. Two forms for the pairing force are explored. Using this spectrum, high spin states in ${}^{144}{Sm}$ , ${}^{146}{Gd}$ , and ${}^{148}{Dy}$ are calculated and compared with known experimental values when possible. The low-lying states in ${}^{143}{Pm}$ and ${}^{147}{Tb}$ are also calculated. The need for experimental data on ${}^{147}{Tb}$ is emphasized.

NUCLEAR STRUCTURE $Z \approx 64$ , proton single particle states, pairing force, high spin states.

RAPID COMMUNICATION

Energy dependence of ${}^{40}{Ca}$ + ${}^{12}C$ elastic scattering at 90° and 180°

S. Kubono, P. D. Bond, D. Horn, and T. R. Renner

Phys. Rev. C 21, 459(R) (1980) - Published 1 January, 1980

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Excitation functions have been measured for the elastic scattering of ${}^{40}{Ca}$ + ${}^{12}C$ at 180° and 90°. The excitation functions at the two angles are found to be anticorrelated, an effect which is quite similar to that observed previously in ${}^{28}{Si}$ + ${}^{16}O$ and ${}^{28}{Si}$ + ${}^{12}C$ elastic scattering. It is found from distorted-wave Born-approximation analyses of the energy dependence that the one-step elastic transfer process is probably not responsible for the observed resonancelike structure around 180° nor for the anticorrelation in the excitation functions at the two angles in ${}^{40}{Ca}$ + ${}^{12}C$ scattering.

NUCLEAR REACTIONS Elastic scattering of ${}^{40}{Ca}$ + ${}^{12}C$ ; measured $σ (E, 180 °)$ and $σ (E, 90 °)$ ; DWBA analysis for the elastic transfer reaction ${}^{12}C$ ( ${}^{40}{Ca}$ , ${}^{12}C$ ).

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Production and knockout of nucleon isobars from helium by 5 GeV pions

Some convergence tests on medium-energy pion-deuteron elastic scattering amplitudes

Decays of mass-separated ${}^{139}{Xe}$ and ${}^{139}{Cs}$

Effect of chemical state on the decay constant of ${}^{99}{Tc}^{m}$

$K$ -shell ionization in the electron and positron decays of ${}^{64}{Cu}$

Nuclear orientation study of ${}^{182}W$ in the decay of ${}^{182}{Re}$ isomers

Interplay between mesonic-exchange corrections and nuclear structure in the weak transitions ${}^{16}O$ ( $0^{+}$ ) ⇄ ${}^{16}N$ ( $0^{-}$ )

Identification and decay of neutron-rich ${}^{39}S$

Time-dependent Hartree-Fock theory and the Rayleigh-Ritz principle

Macroscopic description of isoscalar giant multipole resonances

Shell-model description of the nucleus ${}^{132}{Te}$

Method for calculating matrix elements for shell-model calculations

Properties of Griffin-Hill-Wheeler spaces. II. One-parameter and two-conjugate-parameter families of generator states

Magnetic moments of ${}^{125}{Te}^{m}$ , ${}^{127}{Te}^{m}$ , and ${}^{129}{Te}^{m}$

Tensor analyzing powers in ${}^{4}{He} (d, d) {}^{4}{He}$ elastic scattering between 17 and 45 MeV

Systematics of ( $α, {}^{12}C$ ) in light nuclei and implications for multi- $α$ -cluster transfer reactions

Analysis of the backbending effect in ${}^{166}{Yb}$ , ${}^{168}{Yb}$ , and ${}^{170}{Yb}$ within the Hartree-Fock-Bogolyubov cranking method

Angular dependence of neutron polarization for the ${}^{2}H (d, n) {}^{3}{He}$ reaction for deuteron energies less than 500 keV

${}^{147}{Tb}$ and proton single particle states near $Z = 64$

Energy dependence of ${}^{40}{Ca}$ + ${}^{12}C$ elastic scattering at 90° and 180°

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