Recent Articles

Atomic and nuclear polarization of ${}^{12}C$ , ${}^{13}C$ , and ${}^{15}N$ by beam-foil interaction at 300-400 keV

F. Q. Lu, J. Y. Tang, and B. I. Deutch

Phys. Rev. C 25, 1476 (1982) - Published 1 March, 1982

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Induced nuclear spin polarization $P$ by hyperfine interaction following passage of 0.5 μA 300-keV beams of ${}^{12}C^{+}$ , ${}^{13}C^{+}$ , and ${}^{15}N^{+}$ through single tilted carbon foils yields $| P | = (0.4 \pm 0.8) %, (3.2 \pm 0.6) %, and (5.7 \pm 0.9) %$ , respectively. The nuclear polarizations were enhanced by passage through two tilted foils, and the sign of the polarization flipped by a simple flip of the foil direction with respect to the beam direction. From quantum-beat measurements with circularly polarized light, experimental quantum beat frequencies $ω = 6790 \pm 570 and 747 \pm 62$ MHz for the unresolved 6578-6583 Å doublet in CII, and $ω (5667 Å) = 2860 \pm 240$ , $ω (5680 Å) = 4810 \pm 40$ MHz in NII are determined.

NUCLEAR REACTIONS Beam-foil interaction C( ${}^{12, 13}C$ , ${}^{12, 13}C$ ), C( ${}^{15}N$ , ${}^{15}N$ ), $E = 0.3 - 0.4$ MeV; measured optical CP and quantum beats. Deduced nuclear $P$ .

Search for $γ$ rays from the quasimolecular ${}^{12}C$ + ${}^{12}C$ system

V. Metag, A. Lazzarini, K. Lesko, and R. Vandenbosch

Phys. Rev. C 25, 1486 (1982) - Published 1 March, 1982

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An upper limit (three standard deviations) of 8× $10^{- 6}$ has been determined for the branching ratio of gamma to particle decay of the $14^{+}$ resonance at $E_{c . m .} = 25.2$ MeV in the ${}^{12}C$ + ${}^{12}C$ system. This limit is a factor of 2-3 lower than theoretically expected for an interpretation of the intermediate structure resonances as quasimolecular states in ${}^{24}{Mg}$ , making this hypothesis unlikely. The experimental limit is consistent with an interpretation of these structures as shape resonances in a direct reaction process.

NUCLEAR REACTIONS ${}^{12}C$ + ${}^{12}C$ elastic and inelastic scattering; measured ${}^{12}C$ - ${}^{12}C$ coincidences, ${}^{12}C$ - ${}^{12}C$ - $γ$ triple coincidences; deduced upper limit on $γ$ decay of ${}^{12}C$ + ${}^{12}C$ resonances.

Calculation of the energy dependence of the ion-ion potential using the Negele force

M. Ismail and S. M. Refaei

Phys. Rev. C 25, 1494 (1982) - Published 1 March, 1982

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The energy dependence of the real part of the ion-ion interaction potential is studied using an energy density functional derived from the Negele realistic nucleon-nucleon interaction. It is found that the Negele force produces an ion-ion potential which varies slowly with energy compared to that derived using a simple two-body effective interaction.

NUCLEAR REACTIONS Antisymmetrization effects, Fermi gas model, momentum density, Negele force, energy dependence of ion-ion potential.

Strong Coulomb effects on pions produced in heavy ion collisons

J. P. Sullivan, J. A. Bistirlich, H. R. Bowman, R. Bossingham, T. Buttke, K. M. Crowe, K. A. Frankel, C. J. Martoff, J. Miller, D. L. Murphy, J. O. Rasmussen, W. A. Zajc, O. Hashimoto, M. Koike, J. Péter, W. Benenson, G. M. Crawley, E. Kashy, and J. A. Nolen, Jr.

Phys. Rev. C 25, 1499 (1982) - Published 1 March, 1982

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Doubly differential cross sections for the production of $π^{+}$ and $π^{-}$ near the velocity of the incident beam for pion laboratory angles from 0 to 20 degrees are presented. Beams of ${}^{20}{Ne}$ with $\frac{E}{A} = 280, 380, and 480$ MeV and ${}^{40}{Ar}$ with $\frac{E}{A} = 535$ MeV incident on C, NaF, KCl, Cu, and U targets were used. A sharp peak in the $π^{-}$ spectrum and a depression in the $π^{+}$ spectrum is observed at 0° near the incident projectile velocity. The effect is explained in terms of Coulomb interactions between pions and fragments of the incident beam. Least squares fits to the data using the Coulomb correction formulas of Gyulassy and Kauffmann and an effective projectile fragment charge are made. The relationship between these data and previously measured projectile fragmentation data is discussed and a simple parametrization of projectile mass, target mass, and beam energy dependence of the differential cross sections is given.

NUCLEAR REACTIONS C, NaF, Cu, U $({}^{20}{Ne}, π^{\pm}) X$ , $\frac{E}{A} = 280 - 480$ MeV; C, KCl $({}^{40}{Ar}, π^{\pm}) X$ , $\frac{E}{A} = 535$ MeV; measured $σ (E_{π}, θ_{π})$ , $θ_{π} = 0 ° - 20 °$ , $π$ velocity near beam velocity; deduced projectile fragment charges, Coulomb effects.

Formulation of the Coulomb effects of spectator fragments on pions from heavy ion collisions

Hafez M. A. Radi, J. O. Rasmussen, J. P. Sullivan, K. A. Frankel, and O. Hashimoto

Phys. Rev. C 25, 1518 (1982) - Published 1 March, 1982

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Coulomb effects on heavy-ion pion production cross sections are formulated in terms of weighted averaging over various projectile fragments. Satisfactory fits to zero-degree pion data are found for Ar + C and Ne + C systems. The fragment distributions of excited compound nuclei before nucleon evaporation must be used. Average charge $Z_{eff}$ values are determined and compared with those from an experimental paper. In the heavy-ion energy range of the 0° pion studies ( $300 MeV ≲ \frac{E}{A} ≲ 600 MeV$ ) it is clear that target-projectile factorization for fragmentation cross sections does not hold; that is, the relative yields of projectile fragments are not target independent.

NUCLEAR REACTIONS Theory of Coulomb distortion of pion spectra by heavy-ion spectator fragments. ${}^{40}{Ar}$ $(C, π^{\pm}) X$ , $\frac{E}{A} = 533$ MeV, ${}^{20}{Ne}$ $(C, π^{\pm}) X$ , $\frac{E}{A} = 280, 482$ MeV.

Measurement of nuclear magnetic moments and the tilted-multifoil interaction

E. Dafni, G. Goldring, M. Hass, O. C. Kistner, Y. Niv, and A. Zemel

Phys. Rev. C 25, 1525 (1982) - Published 1 March, 1982

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The measurement of nuclear magnetic moments using the oriented electronic configurations produced by the surface interaction with several polarizing foils is described. In the limit of large number of foils, the measured effect resembles a precession of the angular correlation of decay $γ$ rays around a fixed external field providing important advantages over earlier single-foil measurements. The increase in the measured effects and the improved sensitivity of the present technique, are demonstrated using the Coulomb-excited $2_{1}^{+}$ levels in ${}^{110}{Pd}$ and ${}^{150}{Sm}$ . MS code no. CB2026 1977

NUCLEAR REACTIONS ${}^{110}{Pd}$ ( ${}^{32}S$ , ${}^{32}S$ ') ${}^{110}{Pd}$ ( $2_{1}^{+}$ ), ${}^{150}{Sm}$ ( ${}^{32}S$ , ${}^{32}S$ ') ${}^{150}{Sm}$ ( $2_{1}^{+}$ ) $E_{s} \approx 90 - 120$ MeV, enriched targets; measured $W (θ, H, T)$ in a plunger tilted-multifoil assembly; technique for measurements of nuclear magnetic moments.

Simultaneous excitations in nucleus-nucleus interaction potential

Bikash Sinha

Phys. Rev. C 25, 1534 (1982) - Published 1 March, 1982

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The imaginary part of the nucleus-nucleus interaction potential for simultaneous excitations of the target and the projectile has been estimated. For comparatively higher relative energy, the two-body excitation mechanism seems to be the dominant channel. The theoretical predictions agree reasonably well with appropriate experimental form factors.

NUCLEAR REACTIONS Calculated the imaginary part of the interaction potential for two colliding nuclei for simultaneous excitations.

Competition between fission and neutron emission at high spins and excitation energies

M. Ploszajczak and M. E. Faber

Phys. Rev. C 25, 1538 (1982) - Published 1 March, 1982

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The influence of deformation changes at high spins and excitation energies on the competition between fission and neutron emission is studied in the framework of the statistical theory for ${}^{210}{Po}$ and ${}^{232}U$ . It is found that the shell effects at high spins strongly affect the competing processes if the height of the fission barrier is comparable with the neutron separation energy. In this case the ratio $\frac{Γ_{f}}{Γ_{n}}$ is influenced by the rotation mainly through the change of the saddle point deformation.

NUCLEAR STRUCTURE ${}^{210}{Po}$ , ${}^{232}U$ ; studied $\frac{Γ_{f}}{Γ_{n}}$ ; dependence on angular momentum; shell effects at high spins; statistical theory.

Independent isomeric yield ratio of ${}^{134}I$ in the photofission of ${}^{235}U$ and ${}^{238}U$

H. Thierens, B. Proot, D. De Frenne, and E. Jacobs

Phys. Rev. C 25, 1546 (1982) - Published 1 March, 1982

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The independent isomeric yield ratio of ${}^{134}I$ has been determined radiochemically for the photofission of ${}^{235}U$ and ${}^{238}U$ with bremsstrahlung with end-point energies ranging from 12 to 30 MeV. The root-mean-square values of the angular momentum of the corresponding fission fragments, $J_{rms}$ , calculated using a statistical deexcitation model show an independence on the compound nucleus angular momentum and excitation energy. This $J_{rms}$ behavior is compared to the results obtained in thermal neutron induced and medium-energy particle induced fission.

NUCLEAR REACTIONS, FISSION ${}^{235, 238}U$ ( $γ$ , $F$ ), $E_{γ} max = 12, 15, 20, 30$ MeV; measured ${}^{134}I$ independent isomeric yields; deduced angular momenta.

Comparison between radial sensitivity of different strongly interacting probes

E. Friedman, H. J. Gils, and H. Rebel

Phys. Rev. C 25, 1551 (1982) - Published 1 March, 1982

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We investigate the radial sensitivity of different strongly interacting probes to neutron density distributions in nuclei. The experiments considered are elastic scattering of 104 MeV $α$ particles, 1 GeV protons, 130 MeV pions, and also shifts and widths of pionic atom levels. The Fourier-Bessel method is used, thus avoiding any prior assumption on the neutron densities. To enable statistically meaningful comparisons between the different experiments, "pseudodata" are used, which are based on the real data. Although the region of most sensitivity is near the surface and is similar for each case, the $α$ particles probe better the extreme surface and the protons probe better the interior. Pion scattering appears to be inferior to the other two scattering experiments because of the gradient terms in the potential. Surprisingly, there are some indications that $π^{+}$ could be better than $π^{-}$ in determining neutron densities. Pionic atom data are sensitive mostly to the surface region. A critical discussion of error analyses is presented.

NUCLEAR REACTIONS Radial sensitivity to neutron density within optical model calculations of elastic $σ (θ)$ data analyzed for $α$ , $p$ , $π^{\pm}$ + ${}^{48}{Ca}$ for 100-1000 MeV and of pionic atoms of ${}^{48}{Ca}$ .

Angular distributions of the $\frac{π^{-}}{π^{+}}$ ratio from the ${}^{12}C$ $(e, e^{'} π^{\pm}) X$ reaction at $E_{e} = 200$ MeV

G. J. Lolos and S. Hontzeas

Phys. Rev. C 25, 1562 (1982) - Published 1 March, 1982

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Angular distributions of the $\frac{π^{-}}{π^{+}}$ ratio for 15.8 and 17.9 MeV pions have been measured from the ${}^{12}C$ $(e, e^{'} π^{\pm}) X$ reaction at incident electron energy of 200 MeV. The results show a structure with a minimum at $θ_{π} ≃ 100 °$ . Calculations based on the partial conservation of axial-vector current hypothesis and realistic optical potentials fail to reproduce the experimental structure.

NUCLEAR REACTIONS ${}^{12}C$ ( $e$ , $e^{'} π^{\pm}$ ), $E_{e} = 200$ MeV; measured $σ (E_{π^{\pm}}, θ)$ , $E_{π^{\pm}} = 15.8, 17.9$ MeV; calculated $R = σ (π^{\pm})$ with (PCAP) derived amplitudes; calculated $\frac{[σ (γ n \to p π^{-})]}{[σ (γ p \to n π^{+})]}$ with momentum dependent terms.

Test of time-reversal invariance in ${}^{131}{Xe}$

J. L. Gimlett, H. E. Henrikson, F. Boehm, and J. Lerner

Phys. Rev. C 25, 1567 (1982) - Published 1 March, 1982

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An experiment has been performed to test the time-reversal symmetry in the emission of the mixed $E 2$ and $M 1$ 364 keV $γ$ transition in ${}^{131}{Xe}$ . The phase angle $η$ between the multipole transition amplitudes was measured by observing the angular distribution of the linear polarization of the $γ$ ray emitted from a ${}^{131}I$ source polarized at low temperature (30 mK obtained with a dilution refrigerator). A Compton polarimeter was used to measure linear polarization. The ${}^{131}{Xe}$ transition was selected to minimize atomic final state effects which simulate time-reversal violation. A value $sin η = (- 1.1 \pm 1.1) \times 10^{- 3}$ was obtained for the transition, consistent with time-reversal invariance.

RADIOACTIVITY ${}^{131}{Xe}$ ; measured linear polarization of 364 keV $γ$ from polarized nuclei, time-reversal test; deduced relative phase of $E 2$ , $M 1$ .

Band structure in ${}^{66}{Ge}$

R. Soundranayagam, R. B. Piercey, A. V. Ramayya, J. H. Hamilton, A. Y. Ahmed, H. Yamada, C. F. Maguire, G. L. Bomar, R. L. Robinson, and H. J. Kim

Phys. Rev. C 25, 1575 (1982) - Published 1 March, 1982

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The levels of ${}^{66}{Ge}$ have been investigated using in-beam $γ$ -ray spectroscopy techniques via the ${}^{58}{Ni}$ ( ${}^{10}B$ , $pn$ ) ${}^{66}{Ge}$ reaction. The energies, relative intensities, angular distributions, and directional correlation ratios of the $γ$ rays were measured. The proposed level scheme exhibits three positive parity bands and one negative parity band. The positive parity levels to the $8^{+}$ yrast and the quasigamma band energies are compared with interacting-boson-model calculations. Two-quasiparticle-plus-rotor model calculations suggest that the ( $8^{+}$ ) and ( $10^{+}$ ) states at 5534.5 and 6504.8 keV, respectively, are members of the ${(g_{\frac{9}{2}})}^{2}$ quasiproton band; the $7^{-}$ , ( $9^{-}$ ) states are members of a more completely aligned band of ( $g_{\frac{9}{2}}$ , $f_{\frac{5}{2}}$ ) quasiproton configuration and the $5^{-}$ state at 3684.0 keV is a more partially aligned state of ( $g_{\frac{9}{2}}$ , $p_{\frac{3}{2}}$ ) configuration.

NUCLEAR REACTIONS ${}^{58}{Ni}$ ( ${}^{10}B$ , $pn$ ), $E ({}^{10}B) = 31$ MeV; measured $E_{γ}$ , $I_{γ}$ , $γ (θ)$ , DCO; deduced ${}^{66}{Ge}$ levels, $J$ , $π$ and $γ$ branching; performed IBA and two-quasiparticle-plus-rotor model calculations.

Lifetimes and $g$ -factor measurements in the decay of the 399 keV isomeric state in ${}^{197}{Pt}$ and the quasiparticle-phonon coupling model

J. C. Soares, A. A. Melo, F. B. Gil, R. N. Saxena, H. Dias, and F. Krmpotić

Phys. Rev. C 25, 1587 (1982) - Published 1 March, 1982

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The nuclear levels in ${}^{197}{Pt}$ have been studied from the decay of 95.4 min ${}^{197}{Pt}^{m}$ . The isomeric state was produced by ( $n$ , $γ$ ) reaction on the enriched ${}^{196}{Pt}$ . The $γ$ -ray spectra have been observed with a hyperpure Ge detector and a large volume Ge(Li) detector. The half-lives of the 399 keV and the 53 keV states were determined with improved precision. The results are $T_{\frac{1}{2}}$ (399 keV) =95.41±0.18 min and $T_{\frac{1}{2}}$ (53 keV)=16.58±0.17 ns. The $g$ factor of the 53 keV ${\frac{5}{2}}^{-}$ state has been measured by the gamma-gamma time differential perturbed angular correlation method in an external magnetic field of 25.1 kG using the 346-53 keV gamma cascade. The value of the $g$ factor was obtained to be +0.335±0.010. This result is compared with the known $g$ factors of the similar states in ${}^{195}{Pt}$ , and in ${}^{197}{Hg}$ and ${}^{199}{Hg}$ , and also with theoretical calculations based on the quasiparticle-phonon coupling scheme. The possibility of using the 346-53 keV gamma cascade in ${}^{197}{Pt}$ in the future time differential perturbed angular correlation studies is discussed.

RADIOACTIVITY ${}^{197}{Pt}^{m}$ [from ${}^{196}{Pt}$ $(n, γ) {}^{197}{Pt}^{m}$ ]; measured $E_{γ}$ , $I_{γ} (t)$ , $γ γ (t)$ , $γ γ (θ, T, H)$ , $T_{\frac{1}{2}}$ ; deduced $B (E 2)$ , $μ$ ; calculated $B (E 2)$ , $μ$ ; Ge(Li), Ge hyperpure, NaI(T1) detectors. Enriched target.

Interacting-boson-model and open-shell-Tamm-Dancoff-approximation interpretations of quadrupole collectivity

A. B. Johnson and C. M. Vincent

Phys. Rev. C 25, 1595 (1982) - Published 1 March, 1982

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The collective $S - D$ states used by Otsuka, Arima, and Iachello in their microscopic theory of the interacting boson model are reinterpreted in terms of conventional concepts of collective motion. It is shown that a suitable seniority projected one-body excitation operator acting on a state composed of $S$ and $D$ pairs excites a new $D$ pair. The excitation operator can be calculated using an open-shell Tamm-Dancoff method. The $S - D$ states are then pictured as arising from many-quantum excitations of a single collective mode.

NUCLEAR STRUCTURE IBM shell model subspace constructed; open-shell TDA excitation operator used. Seniority scheme, pairing, and quadrupole degrees of freedom for describing low energy collective motion.

Optimization of finite expansion bases for nuclear collective-model calculations

Frank J. Margetan and S. A. Williams

Phys. Rev. C 25, 1602 (1982) - Published 1 March, 1982

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We define an optimal truncated Bohr eigenfunction basis in terms of which one may expand the eigenfunctions of any collective Hamiltonian, $H$ , having the same degrees of freedom. In principle, determination of this optimal basis would require repeated diagonalization of $H$ . Therefore, we present a method for approximating the optimal basis which is sufficient for most purposes. This method requires only diagonal matrix elements of $H$ and the solution of a modest-order polynomial equation. Twenty-three examples of the Gneuss-Greiner collective Hamiltonian are used to test the method.

NUCLEAR STRUCTURE Collective models; optimal expansion basis.

Microscopic derivation of nuclear collective variables

O. Castaños, A. Frank, E. Chacón, P. O. Hess, and M. Moshinsky

Phys. Rev. C 25, 1611 (1982) - Published 1 March, 1982

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Trinucleon asymptotic normalization constants including Coulomb effects

J. L. Friar, B. F. Gibson, D. R. Lehman, and G. L. Payne

Phys. Rev. C 25, 1616 (1982) - Published 1 March, 1982

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Exact theoretical expressions for calculating the trinucleon $S$ - and $D$ -wave asymptotic normalization constants, with and without Coulomb effects, are presented. Configuration-space Faddeev-type equations are used to generate the trinucleon wave functions, and integral relations for the asymptotic norms are derived within this framework. The definition of the asymptotic norms in the presence of the Coulomb interaction is emphasized. Numerical calculations are carried out for the $s$ -wave $NN$ interaction models of Malfliet and Tjon and the tensor force model of Reid. Comparison with previously published results is made. The first estimate of Coulomb effects for the $D$ -wave asymptotic norm is given. All theoretical values are carefully compared with experiment and suggestions are made for improving the experimental situation. We find that Coulomb effects increase the ${}^{3}{He}$ $S$ -wave asymptotic norm by less than 1% relative to that of ${}^{3}H$ , that Coulomb effects decrease the ${}^{3}{He}$ $D$ -wave asymptotic norm by approximately 8% relative to that of ${}^{3}H$ , and that the distorted-wave Born approximation $D$ -state parameter, $D_{2}$ , is only 1% smaller in magnitude for ${}^{3}{He}$ than for ${}^{3}H$ due to compensating Coulomb effects.

NUCLEAR STRUCTURE ${}^{3}H$ and ${}^{3}{He}$ , asymptotic normalization constants, Coulomb effects, Faddeev calculations.

Configuration assignments to nuclear levels in the doubly odd ${}^{182}{Ta}$ nucleus

R. N. Singh and P. C. Sood

Phys. Rev. C 25, 1632 (1982) - Published 1 March, 1982

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Calculations of the band-head energies for the two-quasiparticle states in the doubly odd nucleus ${}^{182}{Ta}$ are carried out using the zero-range residual neutron-proton interaction with appropriate Nilsson model wave functions. The results are compared with the experimental data in respect to 14 such bands and the procedure is used to confirm the two-particle configuration assignments to such bands.

NUCLEAR STRUCTURE Doubly odd nucleus, ${}^{182}{Ta}$ , band-head energy calculation, configuration assignments $n - p$ interaction.

Coulomb excitation of ground band rotational states in ${}^{249}{Bk}$

C. E. Bemis, Jr., F. K. McGowan, J. L. C. Ford, Jr., W. T. Milner, R. L. Robinson, and P. H. Stelson

Phys. Rev. C 25, 1637 (1982) - Published 1 March, 1982

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Coulomb-excitation probabilities for the first few members of the ${\frac{7}{2}}^{+} [633 ↑]$ ground-state rotational band in ${}^{249}{Bk}$ have been determined with 17.06-MeV ${}^{4}{He}$ ions. These previously known excited states include the ${\frac{9}{2}}^{+}$ (41.8-keV), ${\frac{11}{2}}^{+}$ (93.7-keV), and ${\frac{13}{2}}^{+}$ (155.8-keV) members of the ${\frac{7}{2}}^{+} [633 ↑]$ band. Within experimental uncertainties, the Coulomb-excitation probabilities for these rotational states are reproduced by calculated values when only $E 2$ excitations are considered with an intrinsic quadrupole moment, $Q_{20}$ , of 12.70±0.24 eb in the rigid rotor limit. The deduced ground-state spectroscopic quadrupole moment is 5.93±0.11 eb. Intraband $M 1$ transition rates have been deduced by combining the $Q_{20}$ result with other experimental data. Within the rotational model, a ground-state magnetic moment of +3.45±0.10 $μ_{N}$ is indicated.

NUCLEAR REACTIONS ${}^{249}{Bk}$ ( $α$ , $α^{'}$ ), $E = 17.06$ MeV; measured $σ (E_{α}, θ = 150 °)$ . ${}^{249}{Bk}$ levels; deduced $B (E 2)$ , $q$ , $B (M 1)$ , $μ$ . Enriched target.

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Atomic and nuclear polarization of ${}^{12}C$ , ${}^{13}C$ , and ${}^{15}N$ by beam-foil interaction at 300-400 keV

Search for $γ$ rays from the quasimolecular ${}^{12}C$ + ${}^{12}C$ system

Calculation of the energy dependence of the ion-ion potential using the Negele force

Strong Coulomb effects on pions produced in heavy ion collisons

Formulation of the Coulomb effects of spectator fragments on pions from heavy ion collisions

Measurement of nuclear magnetic moments and the tilted-multifoil interaction

Simultaneous excitations in nucleus-nucleus interaction potential

Competition between fission and neutron emission at high spins and excitation energies

Independent isomeric yield ratio of ${}^{134}I$ in the photofission of ${}^{235}U$ and ${}^{238}U$

Comparison between radial sensitivity of different strongly interacting probes

Angular distributions of the $\frac{π^{-}}{π^{+}}$ ratio from the ${}^{12}C$ $(e, e^{'} π^{\pm}) X$ reaction at $E_{e} = 200$ MeV

Test of time-reversal invariance in ${}^{131}{Xe}$

Band structure in ${}^{66}{Ge}$

Lifetimes and $g$ -factor measurements in the decay of the 399 keV isomeric state in ${}^{197}{Pt}$ and the quasiparticle-phonon coupling model

Interacting-boson-model and open-shell-Tamm-Dancoff-approximation interpretations of quadrupole collectivity

Optimization of finite expansion bases for nuclear collective-model calculations

Microscopic derivation of nuclear collective variables

Trinucleon asymptotic normalization constants including Coulomb effects

Configuration assignments to nuclear levels in the doubly odd ${}^{182}{Ta}$ nucleus

Coulomb excitation of ground band rotational states in ${}^{249}{Bk}$

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