Recent Articles

Charge-dependent three-body force and Coulomb energy difference of ${}^{3}{He}$ - ${}^{3}H$

Shin Nan Yang

Phys. Rev. C 19, 1114 (1979) - Published 1 March, 1979

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Charge-dependent three-body potential with one photon and one pion exchanged was derived. Only the dominant lowest-order processes which arise from the Born terms of the internal processes are investigated. The contribution of this charge-dependent three-body potential to the binding energy difference of ${}^{3}{He}$ - ${}^{3}H$ is then evaluated using a realistic variational wave function and found to be small but not negligible.

NUCLEAR STRUCTURE ${}^{3}{He}$ , ${}^{3}H$ , Charge-dependent three-body force, Coulomb energy.

Variational description of the nuclear free energy

Da Hsuan Feng, Robert Gilmore, and L. M. Narducci

Phys. Rev. C 19, 1119 (1979) - Published 1 March, 1979

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By means of a variational calculation, we place an upper bound on the finite-temperature free energy for nuclear systems which can be described by pseudospin Hamiltonians. The trial states are irreducible permutation invariant Gibbs states. The best trial state is the one which minimizes the free energy operator. We compare the upper bound with the numerically computed free energy for the Meshkov-Glick-Lipkin Hamiltonian for various values of nucleon number $N$ and nuclear interaction strength $V$ . For large $N$ and/or $β (= \frac{1}{kT})$ the best trial Gibbs state becomes a good approximation to the actual density operator. Somewhat surprisingly, the variational approach reveals the presence of a second order thermodynamic phase transition much more clearly than the numerical computation does, even though the former is only an approximation to the latter.

NUCLEAR STRUCTURE Finite-temperature free energy, pseudospin Hamiltonian, variational description and phase transitions, atomic coherent states.

Validity and accuracy of separable potentials in three-body calculations

Ahmed Osman

Phys. Rev. C 19, 1127 (1979) - Published 1 March, 1979

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The three-body problem is reconsidered using separable potentials for the two-body interactions. Using the separable approximation, the Faddeev equations reduce to coupled integral equations in one continuous variable. The separable two-body interactions used are taken as consisting of two parts to include both attraction and repulsion. Each part of the potential is a spin-dependent central force together with tensor forces. Numerical calculations for the resulting integral equations are carried out to calculate the binding energies of the nuclei ${}^{3}H$ , ${}^{3}{He}$ , ${}^{6}{Li}$ , ${}^{9}{Be}$ , and ${}^{12}C$ , using separable potentials of the Yamaguchi, Tabakin, Mongan, and Reid forms. The present calculations show the validity of the separable approximation and that the separable potentials extract accurate binding energies.

NUCLEAR STRUCTURE ${}^{3}H$ , ${}^{3}{He}$ , ${}^{6}{Li}$ , ${}^{9}{Be}$ , ${}^{12}C$ ; three-body model. Calculated binding energies.

RAPID COMMUNICATION

Elastic and inelastic diffraction scattering of 0.8 GeV protons by ${}^{89}Y$ and ${}^{90}{Zr}$

N. J. DiGiacomo, R. L. Boudrie, I. Brissaud, J. J. Kraushaar, R. J. Peterson, R. A. Ristinen, E. S. Rost, and G. R. Smith

Phys. Rev. C 19, 1132(R) (1979) - Published 1 March, 1979

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Differential cross sections for elastic and inelastic scattering of 0.8 GeV protons from ${}^{89}Y$ and ${}^{90}{Zr}$ have been measured to momentum transfers of 3.8 ${fm}^{- 1}$ . The results were analyzed in terms of a relativistic nuclear optical model and indicate that the elastic and inelastic scattering are dominated by surface features of the nucleus. The effect of the spin orbit term in the optical potential on the inelastic cross sections appears to be small.

NUCLEAR REACTION ${}^{89}Y$ , ${}^{90}{Zr}$ ( $p$ , $p^{'}$ ), $E_{p} = 0.8$ GeV; measured $σ (θ)$ ; Optical potential analysis, DWBA, obtained $β_{l}$ .

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Trinucleon photoeffect: Isospin ½

J. S. Levinger

Phys. Rev. C 19, 1136(R) (1979) - Published 1 March, 1979

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I modify the Levinger-Fitzgibbon calculation of electric dipole transitions to final trinucleon states of isospin ½ by assuming that the photon energy is equal to the sum of the threshold for two-body breakup and the total kinetic energy of the final state. This modification greatly improves the following: (i) the threshold behavior of the cross section; (ii) the agreement between the integrated cross section found from $σ (E_{γ})$ and that found from sum rules; (iii) the agreement between the total calculated cross section (summed over two isospin states) and Gorbunov's experiments (summed over two-body and three-body breakup).

NUCLEAR REACTIONS ${}^{3}{He}$ ; calculated photoeffect; hyperspherical harmonics; sum rules.

RAPID COMMUNICATION

Electric monopole transitions and excited $0^{+}$ states in ${}^{250}{Cf}$

Irshad Ahmad and Richard R. Chasman

Phys. Rev. C 19, 1140(R) (1979) - Published 1 March, 1979

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$E 0$ transitions identified in ${}^{250}{Cf}$ establish two excited $0^{+}$ states at 1154.2 and 1266.5 keV with dimensionless ratios $X$ of 0.27 ± 0.03 and 2.5 ± 0.3, respectively. This is the heaviest nucleus in which excited $0^{+}$ states have been observed. Using density-dependent pairing matrix elements and appropriate single-particle energies we have calculated the energies of seniority 0 $K π = 0^{+}$ excited states to be 1310 and 1620 keV and the energy of the lowest $s = 2$ $0^{+}$ state as 1430 keV. These calculations suggest that the 1154.2 keV state is probably the lowest pair vibration and the 1266.5 keV state is possibly the lowest $s = 2$ $0^{+}$ state.

RADIOACTIVITY ${}^{250}{Es}$ [from ${}^{249}{Cf}$ ( $d$ , $n$ )]; measured $E_{γ}$ , $I_{γ}$ , $E_{ce}$ , $I_{ce}$ . ${}^{250}{Cf}$ deduced levels, $log ft (EC)$ , $γ$ multipolarity, $I$ , $π$ , Two excited $0^{+}$ states. Mass-separated ${}^{250}{Es}$ .

RAPID COMMUNICATION

Concerning the existence of a 16 MeV level in ${}^{6}{Li}$

D. M. Skopik, J. J. Murphy, II, and J. Asai

Phys. Rev. C 19, 1144(R) (1979) - Published 1 March, 1979

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RAPID COMMUNICATION

Parity of ${}^{19}F$ (5.10) and ${}^{19}{Ne}$ (5.09)

H. T. Fortune, J. N. Bishop, H. Nann, and B. H. Wildenthal

Phys. Rev. C 19, 1147(R) (1979) - Published 1 March, 1979

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Data for ${}^{17}O$ ( ${}^{3}{He}$ , $p$ ) ${}^{19}F$ and ${}^{21}{Ne}$ ( $p$ , $t$ ) ${}^{19}{Ne}$ establish the parity of the 5.10 and 5.09 MeV levels in ${}^{19}F$ and ${}^{19}{Ne}$ , respectively, as positive, and are consistent with the earlier assignments of $J = \frac{5}{2}$ .

NUCLEAR REACTIONS ${}^{17}O$ ( ${}^{3}{He}$ , $p$ ), $E = 18.0$ MeV; ${}^{21}{Ne}$ ( $p$ , $t$ ), $E = 40$ MeV; ${}^{19}F$ , ${}^{19}{Ne}$ levels deduced $L$ , $π$ . DWBA analysis. Enriched targets.

Inelastic electron scattering from ${}^{14}N$ at 180°

N. Ensslin, L. W. Fagg, R. A. Lindgren, W. L. Bendel, and E. C. Jones, Jr.

Phys. Rev. C 19, 569 (1979) - Published 1 March, 1979

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Inelastic electron scattering from ${}^{14}N$ at 180° has been studied at incident energies of 40.6, 50.6, and 60.2 MeV. Transitions to levels at 2.31, 9.17, and 10.43 MeV excitation energy were observed to be predominantly $M 1$ . The transition to the level at 16.11 MeV probably contains some $M 2$ strength, and transitions to levels at 12.54, 13.27, and 13.76 appear to exhibit some $M 1$ strength. Data on the 2.313 MeV transition, combined with earlier experiments, bring the observed reduced transition width into agreement with resonance fluorescence techniques. Transition widths for the other levels with reasonably certain multipolarities are also given.

NUCLEAR REACTIONS ${}^{14}N$ ( $e$ , $e^{'}$ ), $θ = 180 °$ , $E = 40.6, 50.6, 60.2$ MeV; measured $σ (E)$ ; deduced $Γ_{0}$ , multipolarities for transitions excited.

180° elastic electron scattering from the magnetization distributions of ${}^{25}{Mg}$ and ${}^{93}{Nb}$

R. C. York and G. A. Peterson

Phys. Rev. C 19, 574 (1979) - Published 1 March, 1979

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Magnetic electron scattering cross sections for ${}^{25}{Mg}$ and ${}^{93}{Nb}$ have been measured by means of 180° elastic electron scattering at momentum transfers from 0.8 to 2.2 ${fm}^{- 1}$ . The $M 1$ , $M 3$ , and $M 5$ form factors extracted from the data for ${}^{25}{Mg}$ agree with shell model and Nilsson model calculations over most of the momentum transfer range. The $M 3$ form factor is strongly suppressed with respect to the $M 1$ and the $M 5$ . The measured relatively small quenching of the $M 1$ , $M 3$ , $M 5$ , $M 7$ , and $M 9$ form factors of ${}^{93}{Nb}$ are in good agreement with a shell model calculation of Gloeckner, and show that the magnetic effects in ${}^{93}{Nb}$ are predominantly due to the single $1 g_{\frac{9}{2}}$ proton.

NUCLEAR REACTIONS ${}^{25}{Mg}$ ( $e$ , $e$ ), ${}^{93}{Nb}$ ( $e$ , $e$ ), $E = 80 - 215$ MeV, $θ = 180 °$ , measured $σ (E, 180 °)$ ; deduced magnetic moment from factors.

Virtual state of the three nucleon system

B. A. Girard and M. G. Fuda

Phys. Rev. C 19, 579 (1979) - Published 1 March, 1979

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The existence of a virtual state of the three nucleon system is established on the basis of three different analyses. Values for its pole position and residue in the doublet, $s$ -wave, $n - d$ elastic scattering amplitude, are obtained from a fit to the experimental data, from partial wave dispersion relations, and from an exact three-particle, separable potential calculation. The calculations indicate that these parameters are determined mainly by the one-nucleon exchange mechanism and the doublet scattering length $a_{2}$ . For $a_{2} = 0.65$ fm our best calculation gives an energy of 0.482 MeV below the elastic threshold, on the second Riemann sheet, and a residue parameter ${C_{ν}}^{2} = 0.0504$ , where ${C_{ν}}^{2}$ is defined in analogy to the triton asymptotic normalization parameter.

NUCLEAR REACTIONS Three-nucleon virtual state; fits to data; dispersion relations; separable potential calculations.

Asymptotic normalization parameter of the triton

B. A. Girard and M. G. Fuda

Phys. Rev. C 19, 583 (1979) - Published 1 March, 1979

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On the basis of exact separable potential calculations, we show that there is a significant variation of the asymptotic normalization parameter ${C_{t}}^{2}$ of the triton with its binding energy. We present a partial wave dispersion relation technique for determining this parameter from the triton energy, the doublet $n - d$ scattering length, the doublet, $s$ -wave, $n - d$ inelasticities, and the two-nucleon, on-shell scattering amplitudes. We test the method and find it to be accurate and stable with only low-energy information used as input. For a doublet scattering length of 0.65 fm we obtain ${C_{t}}^{2} = 3.3 \pm 0.1$ , where the error limits are determined from uncertainties in the inelasticities and the analytic continuation of the two-nucleon amplitudes to negative energies.

NUCLEAR REACTIONS exact separable potential calculations; partial wave dispersion relations for $n - d$ elastic scattering amplitudes.

Absolute cross sections for three-body breakup reactions ${}^{6}{Li}$ ( $d$ , $n {}^{3}{He}$ ) ${}^{4}{He}$ and ${}^{6}{Li}$ ( $d$ , $p {}^{3}H$ ) ${}^{4}{He}$

R. E. Holland, A. J. Elwyn, C. N. Davids, F. J. Lynch, L. Meyer-Schützmeister, J. E. Monahan, F. P. Mooring, and W. Ray, Jr.

Phys. Rev. C 19, 592 (1979) - Published 1 March, 1979

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Absolute cross sections have been obtained for the reactions ${}^{6}{Li}$ ( $d$ , $n {}^{3}{He}$ ) ${}^{4}{He}$ and ${}^{6}{Li}$ ( $d$ , $p {}^{3}H$ ) ${}^{4}{He}$ for deuteron energies from 100 to 800 keV. The energy spectra of particles from these reactions are continuums because of the three-body final state. Total cross sections as well as angular distributions have been obtained with accuracies of 10 to 17%. Comparisons of energy spectra are made to predictions of simple models.

NUCLEAR REACTIONS ${}^{6}{Li}$ ( $d$ , $p {}^{3}H$ ) ${}^{4}{He}$ , $E_{d} = 0.1 - 0.8$ MeV, ${}^{6}{Li}$ ( $d$ , $n {}^{3}{He}$ ) ${}^{4}{He}$ , $E_{d} = 0.2 - 0.8$ MeV; enriched target; measured $σ (E_{d}, θ, E_{n})$ , $σ (E_{d}, θ, E_{p})$ , $σ_{t} (E_{d})$ .

${}^{2}H$ ( $p$ , $γ$ ) ${}^{3}{He}$ reaction using polarized and unpolarized protons

D. M. Skopik, H. R. Weller, N. R. Roberson, and S. A. Wender

Phys. Rev. C 19, 601 (1979) - Published 1 March, 1979

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The 90° yield curve for the ${}^{2}H$ ( $p$ , $γ$ ) ${}^{3}{He}$ reaction has been studied over the excitation region in ${}^{3}{He}$ of approximately 7 to 15 MeV. Both polarized and unpolarized proton beams were used to measure the angular distributions of cross section and analyzing power at $E_{x} = 8.83, 9.83, and 10.83$ MeV. If only the four non-spin-flip $E 1$ and $E 2$ $T$ -matrix elements are considered, their amplitudes and relative phases can be extracted. The $E 2$ cross section obtained from this analysis is found to be (12±5)% of the total cross section. The detailed balanced differential ( $θ_{lab} = 90 °$ ) and total cross sections at $E_{x} = 10.83$ MeV are found to be (117±11) μb/sr and (1.07±0.11) mb, respectively; the quoted errors represent the total uncertainties in the cross sections obtained in this experiment. The results are also compared with recent $E 1$ and $E 2$ calculations.

NUCLEAR REACTIONS ${}^{2}H$ ( $p$ , $γ$ ) ${}^{3}{He}$ ; measured $σ (90 °)$ , $E_{x} ≅ 7 - 15$ MeV; $σ (θ)$ , $A (θ)$ , and $σ (tot)$ , $E_{x} = 8.83, 9.83, and 10.83$ MeV; deduced $E 1$ and $E 2$ $T$ -matrix amplitudes and phases.

180° electron scattering from ${}^{3}{He}$

E. C. Jones, Jr., W. L. Bendel, L. W. Fagg, and R. A. Lindgren

Phys. Rev. C 19, 610 (1979) - Published 1 March, 1979

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Elastic and inelastic cross sections for 180° electron scattering from ${}^{3}{He}$ were measured at incident electron energies of 40.44, 50.58, and 60.63 MeV. Our radiatively corrected cross section measurements are in good agreement with theoretical calculations of the behavior near the two-body breakup threshold at 5.5 MeV. The measurements were also compared to cross sections calculated in the zero-range approximation and to sum rules. At $q = 0.602$ ${fm}^{- 1}$ the measured magnetic radius was $r = 1.79 \pm 0.14$ fm. The possibility of the existence of a state at about 10 MeV excitation is also discussed.

NUCLEAR REACTIONS ${}^{3}{He}$ ( $e$ , $e^{'}$ ); $θ = 180 °$ , $E_{0} = 40, 51, 61$ MeV; measured $σ$ for $E_{x} = 0 to \frac{E_{0}}{2}$ . Deduced magnetic radius.

Spurious solutions in few-body equations

Sadhan K. Adhikari and W. Glöckle

Phys. Rev. C 19, 616 (1979) - Published 1 March, 1979

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After Faddeev and Yakubovskii showed how to write connected few-body equations which are free from discrete spurious solutions various authors have proposed different connected few-body scattering equations. Federbush first pointed out that Weinberg's formulation admits the existence of discrete spurious solutions. In this paper we investigate the possibility and consequence of the existence of spurious solutions in some of the few-body formulations. Contrary to a proof by Hahn, Kouri, and Levin and by Bencze and Tandy the channel coupling array scheme of Kouri, Levin, and Tobocman which is also the starting point of a formulation by Hahn is shown to admit spurious solutions. We can show that the set of six coupled four-body equations proposed independently by Mitra, Gillespie, Sugar, and Panchapakesan, by Rosenberg, by Alessandrini, and by Takahashi and Mishima and the seven coupled four-body equations proposed by Sloan are related by matrix multipliers to basic sets which correspond uniquely to the Schrödinger equation. These multipliers are likely to give spurious solutions to these equations. In all these cases spuriosities are shown to have no hazardous consequence if one is interested in studying the scattering problem.

NUCLEAR REACTIONS Scattering theory, spurious solutions in three- and four-body equations.

Nucleosynthesis of Li, Be, and B: contributions from the $p$ + ${}^{16}O$ reaction at 50-90 MeV

R. A. Moyle, B. G. Glagola, G. J. Mathews, and V. E. Viola, Jr.

Phys. Rev. C 19, 631 (1979) - Published 1 March, 1979

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Cross sections fo the production of $A = 6, 7, 9, 10, and 11$ isobars in the reaction of 50-90 MeV protons with oxygen are reported. Product masses were identified by time-of-flight techniques using either a channel-plate fast-timing device or rf fast timing. Mass, kinetic energy, and angular distributions are reported for the products. The measured cross sections are applied to theories of LiBeB nucleosynthesis which involve galactic-cosmic-ray or stellar-flare reactions as a source of these elements. Both of the models underproduce the observed ${}^{7}{Li}$ / ${}^{6}{Li}$ ratio by an order of magnitude, which supports previous conclusions that an additional source of ${}^{7}{Li}$ is required for its synthesis. However, the models give reasonable agreement for the ${}^{11}B$ / ${}^{10}B$ , ${}^{6}{Li}$ /Be and B/ ${}^{6}{Li}$ ratios, although the galactic ray model predicts a ${}^{11}B$ / ${}^{10}B$ ratio that is low by a factor of 2. In addition the B/ ${}^{6}{Li}$ ratio is consistent only with a low value for the natural boron abundance.

NUCLEAR REACTIONS ${}^{16}O$ ( $p$ ,HI); HI Mass numbers $A = 6, 7, 9, 10, and 11$ ; $E = 50, 55, 65, 75, 90$ MeV; ${}^{7}{Li}$ , ${}^{7}{Be}$ , ${}^{10}{Be}$ , ${}^{10}B$ , and ${}^{10}C$ at 90 MeV; measured $σ$ , $σ (θ)$ , and $σ (E)$ ; astrophysical implications of data are discussed.

Electron-deuteron tensor polarization and the short range behavior of the deuteron wave function

L. J. Allen and H. Fiedeldey

Phys. Rev. C 19, 641 (1979) - Published 1 March, 1979

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We investigate to what extent measurements of the polarization of recoil deuterons in electron-deuteron scattering would allow us to determine the short-range behavior of the deuteron wave function. We find that even if such measurements were performed out to $q = 10$ ${fm}^{- 1}$ with an error of ±10% and in some cases even within ±1%, a considerable variation in the deuteron wave function inside 0.7 fm would still be compatible with such measurements. In particular it would be very difficult to employ such measurements to determine the presence of a hole in the deuteron wave function, unless complemented by firmly founded meson theoretical considerations. However, this does not in any way detract from their usefulness as a source of information on other deuteron properties, meson exchange currents and possibly three-nucleon forces.

NUCLEAR REACTIONS Calculated electric deuteron form factor, polarization recoil deuterons electron-deuteron scattering, unitary transformations, short range behavior deuteron wave function.

14-40 MeV proton scattering from low-lying states of ${}^{28}{Si}$

R. De Leo, G. D'Erasmo, A. Pantaleo, G. Pasquariello, G. Viesti, M. Pignanelli, and H. V. Geramb

Phys. Rev. C 19, 646 (1979) - Published 1 March, 1979

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Differential cross sections for proton scattering from the six lowest states of ${}^{28}{Si}$ have been measured at 30 incident energies in the range 14-40 MeV. Differential spin-flip probabilities for proton scattering from ${}^{28}{Si}$ $2^{+}$ (1.78 MeV) state have been determined at ten incident energies in the range 16-22 MeV. Elastic data have been analyzed by means of the optical model. Compound nucleus contributions present at low energies in experimental data have been evaluated by means of the Hauser-Feshbach statistical model. Coupled-channels calculations and a macroscopic model have been used to analyze transitions to natural parity states. An anomalous behavior of the deduced deformation parameters has been obtained at low energies. The experimental data related to the $2^{+}$ level and to the $3^{+}$ unnatural parity state have been compared with the prediction of a microscopic antisymmetrized distorted wave calculation in which a direct reaction mechanism is supplemented by a two-step resonance contribution corresponding to the virtual excitation of giant resonance states of ${}^{28}{Si}$ . These contributions, essential to fully explain the data, have made the evaluation of the $E 1$ , $E 2$ , and $E 3$ giant resonance strengths in ${}^{28}{Si}$ possible.

NUCLEAR REACTIONS ${}^{28}{Si}$ ( $p$ , $p^{'} γ$ ), $E_{p} = 14 - 40$ MeV; measured $σ (E_{p}, θ_{p^{'}})$ for the six lowest states and $σ (E_{p}, θ_{p^{'}}, θ_{γ} = 90 °)$ for the first $2^{+}$ level; deduced OM and deformation parameters and $E 1$ , $E 2$ , and $E 3$ GR strengths of ${}^{28}{Si}$ . Natural targets.

Charged particle spectra: 140 MeV $α$ particle bombardment of ${}^{27}{Al}$ , ${}^{58}{Ni}$ , ${}^{90}{Zr}$ , ${}^{209}{Bi}$ , and ${}^{232}{Th}$

J. R. Wu, C. C. Chang, and H. D. Holmgren

Phys. Rev. C 19, 659 (1979) - Published 1 March, 1979

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Complete energy spectra and angular distributions of the light charged particles ( $A \leq 4$ ) were measured for the bombardment of ${}^{27}{Al}$ , ${}^{58}{Ni}$ , ${}^{90}{Zr}$ , ${}^{209}{Bi}$ , and ${}^{232}{Th}$ with 140 MeV $α$ particles. The spectral shapes of a given emitted particle are very similar for all target nuclei except in the region of the evaporation peak. The slopes of the energy spectra in the forward direction become steeper as the mass of the observed particle decreases and vary very rapidly with angles. The experimental data can be characterized by compound nuclear evaporation processes at low energies, or at backward angles, and by direct reactions, nonequilibrium components and projectile breakup processes at high energies and forward angles. The breakup cross section for $α$ particles is found to be appreciable. The total yield of light charged particles is approximately a factor ∼ 2 to 3 larger than the total reaction cross section for ${}^{27}{Al}$ , ${}^{58}{Ni}$ , and ${}^{90}{Zr}$ and is ∼ 0.7 of reaction cross section for ${}^{209}{Bi}$ and ${}^{232}{Th}$ . The nonequilibrium light charged particle yield is of the order of 1000-1800 mb. The experimental results were analyzed using the pre-equilibrium exciton model, the compound nuclear evaporation model and a Serber type of model for the $α$ particle breakup. The pre-equilibrium model calculations using a 5p-1h initial configuration reproduced the experimental angle-integrated energy spectra rather well.

NUCLEAR REACTION ${}^{27}{Al}$ , ${}^{58}{Ni}$ , ${}^{90}{Zr}$ , ${}^{209}{Bi}$ , ${}^{232}{Th}$ ( $α$ , $xp$ ), ( $α$ , $xd$ ), ( $α$ , $xt$ ), ( $α$ , $x {}^{3}{He}$ ), ( $α$ , $x α$ ), $E_{α} = 140$ MeV; $θ = 20 ° - 140 °$ , measured $\frac{d^{2} σ}{d Ω d ε}$ , deduced $\frac{d σ}{d ε}$ and $σ (E)$ . Comparisons with preequilibrium exciton, evaporation and projectile breakup models.

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Recent Articles

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Recent Issues

Charge-dependent three-body force and Coulomb energy difference of ${}^{3}{He}$ - ${}^{3}H$

Variational description of the nuclear free energy

Validity and accuracy of separable potentials in three-body calculations

Elastic and inelastic diffraction scattering of 0.8 GeV protons by ${}^{89}Y$ and ${}^{90}{Zr}$

Trinucleon photoeffect: Isospin ½

Electric monopole transitions and excited $0^{+}$ states in ${}^{250}{Cf}$

Concerning the existence of a 16 MeV level in ${}^{6}{Li}$

Parity of ${}^{19}F$ (5.10) and ${}^{19}{Ne}$ (5.09)

Inelastic electron scattering from ${}^{14}N$ at 180°

180° elastic electron scattering from the magnetization distributions of ${}^{25}{Mg}$ and ${}^{93}{Nb}$

Virtual state of the three nucleon system

Asymptotic normalization parameter of the triton

Absolute cross sections for three-body breakup reactions ${}^{6}{Li}$ ( $d$ , $n {}^{3}{He}$ ) ${}^{4}{He}$ and ${}^{6}{Li}$ ( $d$ , $p {}^{3}H$ ) ${}^{4}{He}$

${}^{2}H$ ( $p$ , $γ$ ) ${}^{3}{He}$ reaction using polarized and unpolarized protons

180° electron scattering from ${}^{3}{He}$

Spurious solutions in few-body equations

Nucleosynthesis of Li, Be, and B: contributions from the $p$ + ${}^{16}O$ reaction at 50-90 MeV

Electron-deuteron tensor polarization and the short range behavior of the deuteron wave function

14-40 MeV proton scattering from low-lying states of ${}^{28}{Si}$

Charged particle spectra: 140 MeV $α$ particle bombardment of ${}^{27}{Al}$ , ${}^{58}{Ni}$ , ${}^{90}{Zr}$ , ${}^{209}{Bi}$ , and ${}^{232}{Th}$

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