Recent Articles

RAPID COMMUNICATION

Possible triaxial shape of even- $A$ mercury nuclei and a phase transition between ≤ ${}_{80}^{196}{Hg}$ and ${}_{80}^{198, 200}{Hg}$

L. K. Peker and J. H. Hamilton

Phys. Rev. C 20, 855(R) (1979) - Published 1 August, 1979

Show Abstract

Evidences for the existence of triaxial shapes in the ground states of even-even nuclei are considered. Most if not all previous reports that support the existence are not definite. The observed decreasing of the energies of the $2_{1}^{+}$ and $4_{1}^{+}$ states for ${}^{198, 200}{Hg}$ compared to the lighter Hg nuclei is opposite to the expected when $N$ increases and deformation decreases. We show that a triaxial model with a phase transition between $N = 116 and 118$ qualitatively can explain the regularities in $B (E 2)$ ratios and $E_{I}$ for the collective levels with $I^{π} = 2_{1}^{+}, 4_{1}^{+}, 6^{+}, and 2_{2}^{+}$ in ${}^{192 - 200}{Hg}$ .

NUCLEAR STRUCTURE Analysis of levels in ${}^{192 - 200}{Hg}$ in triaxial rotor model.

RAPID COMMUNICATION

Hartree-Fock calculations of crystalline structure of nuclear matter with hard-core potentials

B. Grammaticos and D. Vautherin

Phys. Rev. C 20, 859(R) (1979) - Published 1 August, 1979

Show Abstract

RAPID COMMUNICATION

Octupole states in ${}^{63}{Cu}$ and the weak-coupling picture

Y. Iwasaki, G. M. Crawley, R. G. Markham, J. E. Finck, and J. H. Kim

Phys. Rev. C 20, 861(R) (1979) - Published 1 August, 1979

Show Abstract

A high-resolution experiment of proton inelastic scattering by ${}^{63}{Cu}$ at $E_{p} = 40$ MeV has resolved three octupole states at $E_{x} = 3.81, 3.84, and 3.89$ MeV for the first time, thus showing the existence of seven strong octupole states in ${}^{63}{Cu}$ . This finding is direct evidence that the traditional simple weak-coupling model in terms of one quartet $2 p_{\frac{3}{2}} \otimes 3_{1}^{-}$ is inadequate for the octupole core-excited states in ${}^{63}{Cu}$ . This is not evidence, however, that the weak-coupling picture in general is incorrect for the octupole states in ${}^{63}{Cu}$ . It is shown that to be consistent with the present experimental data, the weak-coupling picture for the octupole states requires a ground-state wave function substantially different from the ground-state wave function of the conventional particle-core-coupling model.

NUCLEAR REACTIONS ${}^{63}{Cu}$ ( $p$ , $p^{'}$ ), $E_{p} = 40$ MeV, strong octupole transitions, resolved new levels. Measured differential cross sections. Discussion in terms of the weak-coupling picture for the octupole states.

Microscopic calculation of the form factors for nucleon transfer in deeply inelastic collisions

S. Shlomo, B. R. Barrett, and H. A. Weidenmüller

Phys. Rev. C 20, 1 (1979) - Published 1 July, 1979

Show Abstract

Previous calculations of form factors are extended to the case of inelastic nucleon transfer. The results generally agree well with those found earlier for inelastic scattering. The two main differences are (i) a systematic increase of the correlation length with distance, (ii) a significant contribution of angular momentum transfer of up to 7 or 8 units of $ℏ$ to the transfer process.

NUCLEAR REACTIONS Shell model used to calculate distribution of form factors.

Neutron resonances in ${}^{100}{Mo}$ and valence neutron capture

H. Weigmann, S. Raman, J. A. Harvey, R. L. Macklin, and G. G. Slaughter

Phys. Rev. C 20, 115 (1979) - Published 1 July, 1979

Show Abstract

Neutron resonance interactions with ${}^{100}{Mo}$ were studied at a time-of-flight facility. The transmission of two oxide samples (97.4% ${}^{100}{Mo}$ ) was measured at a 78.20 m flight path and the neutron capture cross section was measured at 40.12 m. Resonance analyses yielded parameters of 124 resonances. Capture $γ$ -ray spectra from 11 resolved resonances were measured with a Ge(Li) detector at a 10.45 m flight path. In contrast to neighboring nuclei, partial radiation widths of strong $p$ -wave resonances are not in agreement with valence model predictions.

NUCLEAR REACTIONS ${}^{100}{Mo}$ ( $n$ ), $E = 0.1 - 26$ keV, measured total $σ (E)$ ; ${}^{100}{Mo}$ ( $n$ , $γ$ ), $E = 0.1 - 26$ keV, measured $σ_{n γ}$ ; ${}^{100}{Mo}$ ( $n$ , $γ$ ), $E = 0.1 - 8.0$ keV, measured $E_{γ}$ , $I_{γ}$ . ${}^{101}{Mo}$ deduced resonances, resonance parameters, level spacings, $s$ - and $p$ -wave neutron strength functions, levels, $J$ , $π$ , neutron separation energy. Enriched target. Ge(Li) detector. Comparison with valence model predictions.

Photoneutron cross sections for ${}^{55}{Mn}$ and ${}^{59}{Co}$

R. A. Alvarez, B. L. Berman, D. D. Faul, F. H. Lewis, Jr., and P. Meyer

Phys. Rev. C 20, 128 (1979) - Published 1 July, 1979

Show Abstract

Photoneutron cross sections, including $σ [(γ, n) + (γ, p n)]$ , $σ (γ, 2 n)$ , and $σ (γ, 3 n)$ , were measured for ${}^{55}{Mn}$ and ${}^{59}{Co}$ from threshold to 36.5 MeV, with a photon energy resolution which varied from 80 keV at the lowest to 170 keV at the highest energies measured. The source of radiation was the monoenergetic photon beam obtained from the annihilation in flight of fast positrons. The partial photoneutron cross sections were determined by neutron multiplicity counting, and the average neutron energies for ( $γ$ , $1 n$ ) and ( $γ$ , $2 n$ ) events were determined simultaneously with the cross-section data by the ring-ratio technique. The cross sections exhibit considerable but weak structure. Other nuclear information extracted from the data includes parameters of the giant dipole resonance, integrated cross sections and their moments, and nuclear symmetry energies. A comparison is made with previous experimental data for these nuclei as well as with theoretical predictions based upon hydrodynamic, vibrational, and dynamic collective models. None of these models fits the data for these odd-even nuclei satisfactorily; more theoretical work is needed for this nuclear mass region.

NUCLEAR REACTIONS ${}^{55}{Mn}$ , ${}^{59}{Co}$ ( $γ$ , $n$ , $2 n$ , $3 n$ ), $E_{γ} = 10 - 36.5$ MeV; measured $4 π$ neutron yield, multiplicities, average energies for monoenergetic photons; $σ (E_{γ}, 1 n)$ , $σ (E_{γ}, 2 n)$ , $σ (E_{γ}, 3 n)$ , GDR parameters, integrated cross sections and moments, nuclear symmetry energies.

Two-step effects in 15-35 MeV proton scattering from ${}^{24}{Mg}$ low-lying states

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

Phys. Rev. C 20, 13 (1979) - Published 1 July, 1979

Show Abstract

Differential cross sections for proton scattering from the six lowest states of ${}^{24}{Mg}$ have been measured at eleven energies from 15 to 35 MeV. Optical model parameters with a constant geometry and with a linear dependence for the well depths have been deduced for the whole energy range. Coupled channel calculations and the asymmetric rotational model describe satisfactorily the inelastic scattering data of the $K^{π} = 0^{+}$ rotational band while, in the fits relative to some members of the $K^{π} = 2^{+}$ band, disagreements have been found. ( $p$ , $d$ , $p^{'}$ ) and ( $p$ , $p^{''}$ , $p^{'}$ ) two-step effects have been considered; the contributions to the $3_{2}^{+}$ (5.22 MeV) level data relative to the last process show an energy dependence in agreement with the ${}^{24}{Mg}$ giant resonance strength distributions.

NUCLEAR REACTIONS ${}^{24}{Mg}$ ( $p$ , $p^{'}$ ), $E_{p} = 15 - 35$ MeV; measured $σ (θ)$ for the six lowest states of ${}^{24}{Mg}$ ; OM, CC, and CN analyses; deduced OM and deformation parameters; microscopic ADWBA including GR resonance effects and ( $p$ , $d$ , $p^{'}$ ) two-step analyses of the $3_{2}^{+}$ (5.22 MeV) level data. Enriched target.

Nuclear structure of ${}^{94}{Tc}$

M. N. Rao, C. P. Massolo, S. Fortier, and J. M. Maison

Phys. Rev. C 20, 139 (1979) - Published 1 July, 1979

Show Abstract

Levels in ${}^{94}{Tc}$ up to an excitation of 4.5 MeV were populated by means of the ${}^{92}{Mo}$ ( ${}^{3}{He}$ , $p$ ) ${}^{94}{Tc}$ reaction at $E_{{}^{3}{He}} = 25$ MeV. Distorted-wave Born-approximation analyses of the proton angular distributions lead to spin and parity assignments for several levels. Coupled channel calculations predict that contributions of a sequential ( $p - n$ ) transfer mechanism are important and angular distributions for the lowest $0^{+}$ , $1^{+}$ , and $2^{+}$ states are better accounted for by interference effects between one- and two-step processes. A possible $0^{+}$ state at 2.72 MeV excitation is suggested to be the [ ${d_{\frac{5}{2}}}^{p} {d_{\frac{5}{2}}}^{n}$ ] antianalog of the ${}^{94}{Mo}$ ground state.

NUCLEAR REACTIONS ${}^{92}{Mo}$ ( ${}^{3}{He}$ , $p$ ), $E = 25$ MeV; measured $σ (E p, θ)$ , $θ = 5 ° - 50 °$ , $Δ θ = 5 °$ , enriched target, split-pole spectrograph. ${}^{94}{Tc}$ deduced levels, $L_{np}$ , $J^{π}$ . DWBA and CRC analyses.

Structure and directional-correlation measurements in ${}^{97}{Tc}$ from ${}^{97}{Mo}$ ( $p$ , $n$ ) ${}^{97}{Tc}^{*}$ ( $γ$ ) spectrometry

A. C. Xenoulis and C. A. Kalfas

Phys. Rev. C 20, 145 (1979) - Published 1 July, 1979

Show Abstract

The level structure and the decay properties of levels in ${}^{97}{Tc}$ up to 2208 keV excitation have been investigated via measurements of excitation functions of singles $γ$ rays and via $γ γ$ -coincidence experiments following the ${}^{97}{Mo}$ ( $p$ , $n γ$ ) reaction with proton energies between 1.5 and 8.0 MeV. From these experiments and from high resolution singles energy and directional-correlation measurements an extended scheme has been obtained which includes 69 levels of which about 40 are new. The directional correlations provided unique $J^{π}$ assignments for 14 levels, limits for a few others, and multipole mixing ratios for several electromagnetic transitions. The results are compared with unified model calculations.

NUCLEAR REACTIONS ${}^{97}{Mo}$ ( $p$ , $n$ ) ${}^{97}{Tc}^{*}$ ( $γ$ ), $E = 1.5 - 8.0$ MeV; measured $E_{γ}$ , $I_{γ}$ , $I_{γ} (ϑ)$ , $γ γ$ coincidences; deduced ${}^{97}{Tc}$ levels, $J$ , $π$ , branching ratios, $δ (\frac{E 2}{M 1})$ ; enriched targets, Ge(Li) detectors.

Evidence for a positive parity decoupled band in ${}^{79}{Rb}$

J. S. Clements, L. R. Medsker, L. H. Fry, Jr., L. V. Theisen, and L. A. Parks

Phys. Rev. C 20, 164 (1979) - Published 1 July, 1979

Show Abstract

A band of levels has been assigned to the previously unobserved ${}^{79}{Rb}$ . The measurements of angular distributions and excitation functions are consistent with an interpretation of these levels as arising from the decoupling of a $1 g_{\frac{9}{2}}$ proton from the ${}^{78}{Kr}$ core. The results are compared with the previously proposed ${}^{81}{Rb}$ decoupled band.

NUCLEAR REACTIONS ${}^{70, 72, 73}{Ge}$ ( ${}^{9}{Be}$ , $X γ$ ), $E = 25, 35$ MeV; ${}^{73}{Ge}$ ( ${}^{10}B$ , $X γ$ ), $E = 40$ MeV; and ${}^{70}{Ge}$ ( ${}^{12}C$ , $X γ$ ), $E = 47$ MeV; measured $σ (E_{γ})$ . ${}^{72}{Ge}$ ( ${}^{10}B$ , $3 n γ$ ) ${}^{79}{Rb}$ , $E = 30 - 40$ MeV; measured $σ (E_{γ}, E)$ , $σ (E_{γ}, θ)$ , and Ge(Li)-Ge(Li) $γ γ$ coinc.; ${}^{54}{Fe}$ ( ${}^{28}{Si}$ , $3 p γ$ ) ${}^{79}{Rb}$ , $E = 88$ MeV; Si(Li)-Ge(Li) $γ γ$ coinc.; deduced levels and $J^{π}$ . Enriched targets.

Time-dependent Hartree-Fock calculation of fusion cross sections for the reactions $O^{18}$ + ${}^{12}C$ and ${}^{16}O$ + ${}^{12}C$

S. J. Krieger and K. T. R. Davies

Phys. Rev. C 20, 167 (1979) - Published 1 July, 1979

Show Abstract

Fusion cross sections are calculated in the time-dependent Hartree-Fock approximation, for the systems ${}^{18}O$ + ${}^{12}C$ and ${}^{16}O$ + ${}^{12}C$ . Although the experimentally observed fluctuations in the ${}^{16}O$ and ${}^{12}C$ fusion cross section are not reproduced in the calculations, the results are otherwise in good agreement with experiment, except at the highest energies studied.

NUCLEAR REACTIONS ${}^{16}O$ ( ${}^{12}C$ , $x$ ) and ${}^{18}O$ ( ${}^{12}C$ , $x$ ) in time-dependent Hartree-Fock approximation. Fusion and strongly damped collisions.

Simple model for nuclear alignment in peripheral nuclear collisions

R. Vandenbosch

Phys. Rev. C 20, 171 (1979) - Published 1 July, 1979

Show Abstract

A nucleon exchange model incorporating both the effects of the relative motion of the target and projectile and the internal motion of the constituent nucleons is developed to calculate the alignment and magnitude of the transferred angular momentum in peripheral heavy ion reactions. The model leads in a natural way to unequal components or angular momentum along the two directions perpendicular to the normal to the reaction plane, and explains the decrease in alignment for small energy losses in a physically transparent manner.

NUCLEAR REACTIONS Nucleon exchange model distinguishing between effects of relative motion and Fermi motion. Magnitude and alignment of angular momentum transfer calculated for heavy ion reaction.

${}^{12}C$ ( ${}^{9}{Be}$ , ${}^{9}{Be}$ ) ${}^{12}C$ (g.s., 4.43 MeV) reaction

J. F. Mateja, A. D. Frawley, P. B. Nagel, and L. A. Parks

Phys. Rev. C 20, 176 (1979) - Published 1 July, 1979

Show Abstract

Angular distributions for the ${}^{12}C$ ( ${}^{9}{Be}$ , ${}^{9}{Be}$ ) ${}^{12}C$ (g.s.,4.43 MeV) reaction have been measured at ${}^{9}{Be}$ bombarding energies of 39.68 and 43.75 MeV over an angular range from 13° to 158° c.m. Back angle cross section enhancements were observed in both the elastic and 4.43 MeV channels. The enhancement of the back angle elastic cross section could not be described in terms of a simple optical model or coupled channels analysis. In an attempt to explain these back angle data, several reaction mechanisms were investigated. The importance of heavy ion resonance formation was determined from an excitation function measured in 200 keV intervals from 40 to 45 MeV at 158° c.m. A Hauser-Feshbach calculation was used to place an upper limit on the statistical compound nuclear contribution to the cross section. Finally, an exchange calculation in which a ${}^{3}{He}$ cluster was transferred between the two ${}^{9}{Be}$ cores has been made.

NUCLEAR REACTIONS ${}^{12}C$ ( ${}^{9}{Be}$ , ${}^{9}{Be}$ ) ${}^{12}C$ (g.s., 4.43 MeV); measured $σ (θ)$ , $θ = 13 - 158 °$ c.m. at 39.68 and 43.75 MeV and $σ (E) = 40 - 45$ MeV, $Δ E = 200$ keV; deduced reaction mechanism. Enriched targets. Hauser-Feshbach, coupled channels, and exchange analysis.

Intermediate resonances in the inelastic scattering of ${}^{12}C$ on ${}^{16}O$

O. Tanimura and T. Tazawa

Phys. Rev. C 20, 183 (1979) - Published 1 July, 1979

Show Abstract

The coupling interactions derived by means of the folding procedure between ${}^{12}C$ and ${}^{16}O$ are found to be successful in predicting the molecular resonances observed in the inelastic integrated cross sections. These resonances are studied in detail on the basis of an adiabatic potential between two nuclei.

NUCLEAR REACTIONS ${}^{12}C$ [ ${}^{16}O$ , ${}^{16}O$ * ( $3^{-}$ )]. ${}^{12}C$ , ( ${}^{16}O$ , ${}^{16}O$ ) ${}^{12}C$ * ( $2^{+}$ ), calculated $σ (E)$ .

Theory of nucleon transfer in the dynamical two-center shell model

Jae Y. Park, Werner Scheid, and Walter Greiner

Phys. Rev. C 20, 188 (1979) - Published 1 July, 1979

Show Abstract

The theory of nucleon transfer in heavy ion reactions is formulated on the basis of the molecular particlecore model for a system consisting of two cores and one extracore nucleon. The extracore nucleon is described by the molecular wave functions of the asymmetric two-center shell model. The cores, which are assumed to be collectively excitable, are treated with vibrator-rotator models. Potentials for shape polarization are contained in the asymmetric two-center shell model and the interaction between the cores. The excitation and transfer of the extracore nucleon is induced by the radial and rotational couplings. The coupled channel equations, which include the recoil effects in first approximation, are derived in a form suitable for numerical calculations of cross sections.

NUCLEAR REACTIONS Heavy ion scattering, theory of nucleon transfer, molecular wave functions, two-center shell model, collective and single-particle excitation.

Capture-to-fission ratio of ${}^{235}U$ in the neutron energy range from 10 to 500 keV

H. Beer and F. Käppeler

Phys. Rev. C 20, 201 (1979) - Published 1 July, 1979

Show Abstract

The capture-to-fission ratio $α = \frac{σ_{c}}{σ_{f}}$ of ${}^{235}U$ has been determined in the neutron energy range from 10 to 500 keV with an accuracy of typically 8 to 10%. The measurement was carried out on a 3 MV pulsed Van de Graaff accelerator using an $800 l$ liquid scintillator tank for the detection of capture and fission gamma rays. A fission neutron counter in coincidence with the tank served to distinguish between capture and fission events. With the good energy resolution of 2 nsec/m achieved in this experiment, intermediate structure in the capture-to-fission ratio could be resolved up to ∼50 keV neutron energy. Interpreted in terms of the double humped fission barrier, the experimental average level spacing $D_{II} = 1000 \pm 300$ eV led to an energy difference between the first and second well of $E_{II} = 3.26 \pm 0.14$ MeV.

NUCLEAR REACTIONS ${}^{235}U$ ( $n$ , $f$ ), ( $n$ , $γ$ ), $E = 10 - 500$ keV; measured $\frac{σ (n, γ)}{σ (n, f)}$ , deduced average level spacing of class II states and energy difference between first and second well, enriched target.

Fractional independent yields of ${}^{139}{Ba}$ and ${}^{142}{La}$ from thermal-neutron-induced fission of ${}^{249}{Cf}$

M. A. Monzyk and D. E. Troutner

Phys. Rev. C 20, 212 (1979) - Published 1 July, 1979

Show Abstract

The fractional independent yields of ${}^{139}{Ba}$ and ${}^{142}{La}$ from thermal-neutron-induced fission of ${}^{249}{Cf}$ were found to be 0.14±0.03 and 0.29±0.02, respectively. These yields are consistent with a $σ$ of ∼0.68 and $Z_{p}$ values of 54.80±0.04 and 56.11±0.03 for $A = 139 and 142$ , respectively, and correspond to a value for $Δ Z (= Z_{p} - Z_{UCD})$ of ∼ - 0.4. No evidence for an odd-even effect was found.

RADIOACTIVITY, FISSION, ${}^{249}{Cf}$ ( $n$ , $f$ ); measured $γ$ activity of fission products ${}^{139}{Ba}$ and ${}^{142}{La}$ . Ge(Li) detector, NaI detector, radiochemical separations. Fractional independent yields obtained. $Z_{p}$ for $A = 139 and 142$ deduced.

Nucleon-nucleon scattering above the pion production threshold

A. W. Thomas and A. S. Rinat

Phys. Rev. C 20, 216 (1979) - Published 1 July, 1979

Show Abstract

Starting from a simple nonrelativistic field theory of pions and nucleons, we derive linear integral equations coupling amplitudes of baryon number equal two systems. These equations guarantee two- and three-body unitarity above the threshold for single pion production, and include explicity the coupling of the $NN$ to (e.g.) $N Δ$ and $π d$ channels. The relationship of this approach to earlier schemes is discussed.

NUCLEAR REACTIONS Nucleon-nucleon scattering. Derived coupled equations for $NN$ , $N Δ$ , $π d$ with heavy-boson exchange and $NN π$ vertex as input.

$S$ -wave pion-nucleus dynamics in the $σ + ω$ model

J. V. Noble

Phys. Rev. C 20, 225 (1979) - Published 1 July, 1979

Show Abstract

The $σ + ω$ model of nuclear forces has many desirable properties, including approximate chiral symmetry (partial conservation of axial vector current) and renormalizability, and it gives a good account of nuclear structure. It is therefore a useful framework within which to explore the modification of pion-nucleon dynamics in a nuclear medium, a problem which resists the usual soft-pion current-algebra cum analyticity techniques owing to the presence of anomalous thresholds (nuclear structure effects). It is found that through order $G^{4}$ (for pion elastic scattering) and $G^{3}$ (for pion absorption or emission) the chiral invariance ensures sufficient cancellations between otherwise large terms so as to produce little renormalization of free-particle dynamics. Moreover, the pseudoscalar-coupled $σ + ω$ model is equivalent in pion emission or absorption, through $O (G^{3})$ , to a pseudovector-coupled phenomenological model (with no $π - σ$ interaction, but with a form of partially conserved axial vector current). Thus, the question of whether one can distinguish experimentally between pseudoscalar and pseudovector $π NN$ coupling is probably meaningless.

NUCLEAR REACTIONS $A (π, π) A$ , $A (p, π) B$ , $A (π, N N) C$ . $E_{π} < 50$ MeV. Wick-formalism treatment of field-theoretic $σ$ -model Lagrangian with $ω N$ coupling. Consequences of broken chiral symmetry for finite-mass pions in nuclei. Nonlinear effects.

Coherent $π^{0}$ photoproduction in the isobar-hole formalism

J. H. Koch and E. J. Moniz

Phys. Rev. C 20, 235 (1979) - Published 1 July, 1979

Show Abstract

The isobar-hole formalism for pion-nucleus interactions is applied to coherent $π^{0}$ photoproduction on nuclei. The unifying features of this approach for elastic scattering and photoproduction are discussed, and the relationship to distorted-wave impulse approximation calculations and the phenomenological doorway model are examined. The results are presented for ${}^{16}O$ ( $γ$ , $π^{0}$ ) ${}^{16}O$ and show a large suppression from the impulse approximation prediction.

NUCLEAR REACTIONS ${}^{16}O$ ( $γ$ , $π^{0}$ ) ${}^{16}O$ calculated in isobar-hole formalism; comparison to DWIA.

Select page:

Physical Review C

Recent Articles

Filter

Recent Issues

Possible triaxial shape of even- $A$ mercury nuclei and a phase transition between ≤ ${}_{80}^{196}{Hg}$ and ${}_{80}^{198, 200}{Hg}$

Hartree-Fock calculations of crystalline structure of nuclear matter with hard-core potentials

Octupole states in ${}^{63}{Cu}$ and the weak-coupling picture

Microscopic calculation of the form factors for nucleon transfer in deeply inelastic collisions

Neutron resonances in ${}^{100}{Mo}$ and valence neutron capture

Photoneutron cross sections for ${}^{55}{Mn}$ and ${}^{59}{Co}$

Two-step effects in 15-35 MeV proton scattering from ${}^{24}{Mg}$ low-lying states

Nuclear structure of ${}^{94}{Tc}$

Structure and directional-correlation measurements in ${}^{97}{Tc}$ from ${}^{97}{Mo}$ ( $p$ , $n$ ) ${}^{97}{Tc}^{*}$ ( $γ$ ) spectrometry

Evidence for a positive parity decoupled band in ${}^{79}{Rb}$

Time-dependent Hartree-Fock calculation of fusion cross sections for the reactions $O^{18}$ + ${}^{12}C$ and ${}^{16}O$ + ${}^{12}C$

Simple model for nuclear alignment in peripheral nuclear collisions

${}^{12}C$ ( ${}^{9}{Be}$ , ${}^{9}{Be}$ ) ${}^{12}C$ (g.s., 4.43 MeV) reaction

Intermediate resonances in the inelastic scattering of ${}^{12}C$ on ${}^{16}O$

Theory of nucleon transfer in the dynamical two-center shell model

Capture-to-fission ratio of ${}^{235}U$ in the neutron energy range from 10 to 500 keV

Fractional independent yields of ${}^{139}{Ba}$ and ${}^{142}{La}$ from thermal-neutron-induced fission of ${}^{249}{Cf}$

Nucleon-nucleon scattering above the pion production threshold

$S$ -wave pion-nucleus dynamics in the $σ + ω$ model

Coherent $π^{0}$ photoproduction in the isobar-hole formalism

Filter

Recent Issues

Filter

Article Lookup

Enter a citation