Recent Articles

Resonance neutron capture $γ$ rays from ${}^{168}{Er}$

J. B. Garg, G. W. Cole, H. I. Liou, and R. E. Chrien

Phys. Rev. C 13, 1139 (1976) - Published 1 March, 1976

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$γ$ rays following neutron capture in seven major $s$ -wave resonances in ${}^{168}{Er}$ up to 1 keV have been measured. The results serve to confirm and extend the knowledge of levels in ${}^{169}{Er}$ obtained from previous ( $d, p$ ), ( $d, t$ ), and thermal ( $n, γ$ ) experiments. Absolute width determinations are made and a photon strength function is obtained.

NUCLEAR REACTIONS ${}^{169}{Er}$ energy levels, spins, parities, resonance parameter, partial radiative widths, photon strength functions.

$l$ - and $j$ -dependent effect in ( $d, p$ ) reactions

F. D. Santos

Phys. Rev. C 13, 1145 (1976) - Published 1 March, 1976

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A marked dependence of the tensor analyzing power $T_{22}$ for ( $d, p$ ) reactions on the quantum numbers $l_{n}$ and $j_{n}$ of the captured neutron has been observed. This small angle $l_{n}$ and $j_{n}$ dependence, which can be reproduced in distorted-wave Born-approximation calculations only by inclusion of deuteron $D$ -state effects, is interpreted in terms of a simple reaction model based on the surface localization of the transfer process.

NUCLEAR REACTIONS $T_{22} (θ)$ of ( $\vec{d}, p$ ) reactions (target $A = 12 - 90$ ), $E = 6 - 13.3$ MeV; analyzed surface reaction model; $l_{n}$ and $j_{n}$ dependence.

Systematics of Coulomb excitation with limited effects from nuclear distortion

Da Hsuan Feng, A. R. Barnett, and L. J. B. Goldfarb

Phys. Rev. C 13, 1151 (1976) - Published 1 March, 1976

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A wide-ranging survey has been made of ( $α, α^{'}$ ) scattering from various target nuclei. Particular emphasis was given to determination of the departures of the cross section from Coulomb excitation, which are due mainly from nuclear interaction. The energy range in this study covers the region from the Coulomb barrier and downwards. Calculations were performed to first order only via the distorted-wave Born approximation method and the usual collective model was assumed. It is found that the inelastic scattering is more sensitive to the nuclear distortion than the elastic scattering, which conforms with results of recent experiments. A discussion is given of the Igo ambiguity in elastic and inelastic scattering near the barrier.

NUCLEAR REACTIONS Elastic and inelastic $α$ -particle scattering on medium-and heavy-weight nuclei, Coulomb-nuclear interference, Coulomb barrier, safe distance, multipolarities, Igo ambiguities, strong absorption radius.

Recoil distance lifetimes of rotational states in ${}^{236}U$

M. W. Guidry, R. J. Sturm, N. R. Johnson, E. Eichler, G. D. O'Kelley, N. C. Singhal, and R. O. Sayer

Phys. Rev. C 13, 1164 (1976) - Published 1 March, 1976

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Half-lives for members of the ${}^{236}U$ ground-state rotational band have been measured by the recoil-distance method following Coulomb excitation with ${}^{40}{Ar}^{8 +}$ projectiles. The $B (E 2, I \to I - 2)$ values in units of $e^{2} b^{2}$ determined from the half-lives of the $4^{+}$ , $6^{+}$ , $8^{+}$ , $10^{+}$ , and $12^{+}$ states are 3.03±0.20, 3.28±0.19, 3.42±0.28, 3.11±0.30, and ${3.34}_{- 0.95}^{+ 2.23}$ , respectively. Transition quadrupole moments $Q_{20} (I_{i} \to I_{f})$ deduced from the lifetimes are constant within experimental error and thus support the characterization of ${}^{236}U$ as a good rotor to spin $12^{+}$ .

NUCLEAR REACTIONS ${}^{236}U ({}^{40}{Ar}, {}^{40}{Ar}^{'}, γ)$ , $E = 153, 155$ MeV; measured lifetimes $4^{+}$ , $6^{+}$ , $8^{+}$ , $10^{+}$ , $12^{+}$ members g.s. band ${}^{236}U$ ; deduced $B (E 2)$ and $Q_{20} (I_{i} \to I_{f})$ values, compared with theory.

Resonant structures in the ${}^{12}C$ ( ${}^{12}C$ , ${}^{8}{Be}$ ) ${}^{16}O$ reaction, $E_{c . m .} = 9 to 20$ MeV

N. R. Fletcher, J. D. Fox, G. J. KeKelis, G. R. Morgan, and G. A. Norton

Phys. Rev. C 13, 1173 (1976) - Published 1 March, 1976

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Coincident detection of $α$ particles is used to measure the differential cross section of the ${}^{12}C$ ( ${}^{12}C$ , ${}^{8}{Be}$ ) ${}^{16}O$ reaction for $θ_{c . m .} ≃ 12 ° to 68 °$ and for each 100 keV interval from $E_{c . m .} = 9 to 20$ MeV. A large number of resonant enhancements is observed in the cross section and the $J^{π}$ values of these are unambiguously determined. The energies and widths of some of these resonant structures agree with resonances reported in other exit channels, in particular those which have been interpreted as a quasimolecular collective band in ${}^{24}{Mg}$ . Well defined gross structure with $J = 8, 10, and 12$ is observed at $E_{c . m .} \sim 12, 14.5, and 19$ MeV. NUCLEAR REACTIONS Measured $\frac{d σ}{d Ω}$ for ${}^{12}C$ ( ${}^{12}C$ , ${}^{8}{Be}$ ) at $θ_{c . m .} ≃ 12 ° to 68 °$ and $E_{c . m .} = 9 to 20$ MeV in 100 keV steps. Determined energy width and dominant $J^{π}$ value of resonant enhancements.

Heavy-ion fusion-evaporation reactions: high spin states in ${}^{43}{Ca}$ and ${}^{43}{Sc}$

A. R. Poletti, E. K. Warburton, J. W. Olness, J. J. Kolata, and Ph. Gorodetzky

Phys. Rev. C 13, 1180 (1976) - Published 1 March, 1976

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Fusion-evaporation reactions, primarily ${}^{27}{Al} ({}^{19}F, n 2 p) {}^{43}{Ca}$ and ${}^{27}{Al} ({}^{19}F, 2 n p) {}^{43}{Sc}$ , have been used to investigate the structure and formation of the residual nuclei. Decay schemes of the yrast levels which are populated are presented together with suggested spin assignments for some of the higher levels. Incidental results obtained for the nuclei ${}^{44}{Ca}$ , ${}^{44}{Sc}$ , and ${}^{40}{Ca}$ are also discussed. Mean lifetimes measured by the recoil distance method are as follows: ( ${}^{43}{Ca}$ ): 2754-keV level, $τ = 34.1 \pm 1.5$ psec; 990-keV level, $τ = 73 \pm 11$ psec; ( ${}^{43}{Sc}$ ): 880-keV level, $τ = 7.0 \pm 1.4$ psec; 472-keV level, $τ = 233 \pm 53$ psec; ( ${}^{44}{Ca}$ ): 3285-keV level, $τ = 23 \pm 7$ psec, 2283-keV level, $τ < 25$ psec; ( ${}^{44}{Sc}$ ): 631-keV level, $τ = 550 \pm 80$ psec; 3567-keV level, $τ = 51 \pm 10$ psec. The properties of the high spin states populated in the ${}^{19}F$ + ${}^{27}{Al}$ fusion-evaporation reaction are discussed. Relative excitation intensities of the residual nuclei are interpreted in terms of a Hauser-Feshbach calculation, while a simplified pairing force model allows us to explain a number of observations in specific nuclei. NUCLEAR REACTIONS ${}^{27}{Al} ({}^{19}F, 2 p n) {}^{43}{Ca}$ and ${}^{27}{Al} ({}^{19}F, p 2 n) {}^{43}{Sc}$ . $E = 40$ MeV; measured $γ - γ$ coinc, $σ (E_{γ}, θ)$ , $P (E_{γ}, θ = 90 °)$ , and $T_{\frac{1}{2}}$ for $γ$ transitions; deduced decay schemes and $Λ$ for transitions and $J^{π}$ , $δ$ for high-spin levels. Additional data on ${}^{44}{Ca}$ , and ${}^{40}{Ca}$ .

Isomeric ${17 / 2}^{-}$ level and parity mixing in ${}^{93}{Tc}$

B. A. Brown, D. B. Fossan, P. M. S. Lesser, and A. R. Poletti

Phys. Rev. C 13, 1194 (1976) - Published 1 March, 1976

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The ${}^{90}{Zr} ({}^{6}{Li}, 3 n γ) {}^{93}{Tc}$ reaction has been used in conjunction with pulsed-beam $γ$ , $γ - γ$ coincidence, and $γ$ angular distribution measurements to investigate a proposed $[{(g_{\frac{9}{2}})}^{4} p_{\frac{1}{2}}] {\frac{17}{2}}^{-}$ isomer in ${}^{93}{Tc}$ . The isomeric level was found at 2185 keV on the basis of its decay properties and lifetime. The mean lifetime of the ${17 / 2}^{-}$ isomeric level was measured to be $τ = 15.2 \pm 1.0$ μsec. The level decays by a 39.7-keV $E 2$ branch (73.7±1.0%) to the 2145-keV ${13 / 2}^{-}$ level and by a 750.7-keV $\frac{M 2}{E 3}$ branch (26.3±1.0%) to the 1434-keV ${13 / 2}^{+}$ level. An experimental $B (E 2) [{\frac{17}{2}}^{-} \to {\frac{13}{2}}^{-}] = 11.4 \pm 0.9$ $e^{2}$ ${fm}^{4}$ is obtained for the $E 2$ branch, implying an effective charge of $e_{p} = 2.49 \pm 0.10$ . To explore possible parity mixing between the nearly degenerate ${17 / 2}^{-}$ and ${17 / 2}^{+}$ levels, the precise energy separation of these levels was measured to be 0.44±0.02 keV. On the basis of the observed decay properties, the parity nonconserving matrix element $| 〈 {\frac{17}{2}}^{+} | H_{PN} | {\frac{17}{2}}^{-} 〉 |$ was determined to be less than 0.34 eV.

NUCLEAR REACTIONS ${}^{90}{Zr} ({}^{6}{Li}, 3 n)$ $E_{Li} = 34$ MeV pulsed beam; measured $γ - γ$ coincidence; deduced levels in ${}^{93}{Tc}$ ; measured $γ (θ, t)$ ; deduced $T_{\frac{1}{2}}$ , $B (E 2)$ , effective charges, parity mixing. Enriched target, Ge(Li), Si(Li) detectors.

Multistep processes in transfer reactions induced by 56 MeV ${}^{16}O$ beam on ${}^{72, 74, 76}{Ge}$ isotopes

M. E. Cobern, M. C. Lemaire, K. S. Low, M. C. Mermaz, H. Sztark, T. Udagawa, and T. Tamura

Phys. Rev. C 13, 1200 (1976) - Published 1 March, 1976

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Angular distributions of the ( ${}^{16}O$ , ${}^{14}C$ ) reaction on ${}^{72, 74, 76}{Ge}$ targets were measured using a 56 MeV ${}^{16}O$ beam in 2° steps between 13° and 17° laboratory angles. The experiments were performed using three solid state detector telescopes. The observed difference between the shapes of the angular distributions of the ground states and the excited states indicates that an important role is played by multistep processes, involving vibrational excitation of the target and residual nuclei. It was found that the exact-finite-range coupled-channel-Born-approximation calculations were able to reproduce qualitatively the observed variation of the angular distributions.

NUCLEAR REACTIONS ${}^{72, 74, 76}{Ge}$ ( ${}^{16}O$ , ${}^{14}C$ ), $E = 56$ MeV; measured $σ (θ)$ and calculated $σ (θ)$ with EFR-CCBA and DWBA.

States in ${}^{15}N$ populated by the ${}^{11}B ({}^{6}{Li}, d)$ and ${}^{11}B ({}^{7}{Li}, t)$ reactions

G. A. Norton, K. W. Kemper, G. E. Moore, R. J. Puigh, and M. E. Williams-Norton

Phys. Rev. C 13, 1211 (1976) - Published 1 March, 1976

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Angular distributions have been measured in the angular range from 2.5° to 30° (lab) for the ${}^{11}B ({}^{6}{Li}, d) {}^{15}N$ and ${}^{11}B ({}^{7}{Li}, t) {}^{15}N$ reactions at $E ({}^{6, 7}{Li}) = 34$ MeV. The ( ${}^{7}{Li}, t$ ) reaction is slightly more selective than the ( ${}^{6}{Li}, d$ ) reaction, but neither reaction has the selectivity of three-particle transfer reactions which also populate states in ${}^{15}N$ . The shapes of the measured angular distributions were not sufficiently distinctive to permit $L$ transfer values to be extracted for the most strongly excited states. The present work indicates that of the states in ${}^{15}N$ (10.70, 13.1, and 15.5 MeV) which have been proposed as having a large ${}^{12}C + t$ cluster component, only the 15.5 MeV state has a large cluster component corresponding to ${}^{11}B + α$ .

NUCLEAR REACTIONS ${}^{11}B ({}^{6}{Li}, d)$ , ${}^{7}{Li}, t$ , $E = 34$ MeV, measured $σ (θ)$ for $θ = 2.5 ° - 30 °$ , $Δ θ = 2.5 °, 5 °$ .

Effect of deorientation in recoil-distance lifetime measurements

R. Rascher, K. P. Lieb, and M. Uhrmacher

Phys. Rev. C 13, 1217 (1976) - Published 1 March, 1976

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The influence of hyperfine deorientation in recoil-distance Doppler shift measurements was studied for high spin states in ${}^{38}{Ar}$ , ${}^{40}K$ , ${}^{41}K$ , and ${}^{41}{Ca}$ having lifetimes in the range between 30 ps and 10 ns. At a recoil velocity of $\frac{v}{c} = 0.02$ , deorientation in vacuo was found to be negligible for lifetimes up to several ns.

NUCLEAR REACTIONS ${}^{27}{Al} ({}^{16}O, x y γ) {}^{38}{Ar}$ , ${}^{40}K$ , ${}^{41}K$ , ${}^{41}{Ca}$ ; $E = 32.5$ MeV; measured $γ (θ, t)$ for recoil in vacuum; ${}^{38}{Ar}$ , ${}^{40}K$ , ${}^{41}K$ , ${}^{41}{Ca}$ levels deduced $T_{\frac{1}{2}}$ and hyperfine perturbations.

One-dimensional nuclear dynamics in the time-dependent Hartree-Fock approximation

P. Bonche, S. Koonin, and J. W. Negele

Phys. Rev. C 13, 1226 (1976) - Published 1 March, 1976

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The time-dependent Hartree-Fock theory is applied to the large amplitude dynamics of slabs of spin and isospin symmetric nuclear matter. The slabs are translationally invariant in two transverse dimensions, and with the simplified effective interaction used in this work, the problem is reduced to a set of coupled nonlinear equations for time-dependent functions of a single spatial variable. By specification of appropriate initial conditions, large amplitude oscillations of a single slab, the scattering of a slab from an external potential barrier, and collisions of two slabs have been investigated. The results evidence a wide variety of dynamic phenomena, including fusion, compound nucleus formation, dissipation, strongly damped collisions, shock wave propagation, and fragmentation. The microscopic aspects of the dynamics, the relation to fluid mechanics, and the practical and conceptual problems arising from the theory are discussed in detail.

NUCLEAR STRUCTURE Time-dependent Hartree-Fock approximation applied to nuclear dynamics. Describes large amplitude collective motion, collisions, dissipation, shock propagation.

Dynamical theory of nuclear fission

Peter Fong

Phys. Rev. C 13, 1259 (1976) - Published 1 March, 1976

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The asymmetric fission problem is investigated from the dynamical theory point of view under a variety of conditions which cover most cases encountered in practice. Quantitative and qualitative results are obtained. In all the cases studied the dynamical theory cannot explain the experimental results of asymmetric mass distribution of fission products.

NUCLEAR REACTION Fission. Asymmetric fission.

Production of hypernuclei in a 2.1 GeV/nucleon oxygen beam

K. J. Nield, T. Bowen, G. D. Cable, D. A. DeLise, E. W. Jenkins, R. M. Kalbach, R. C. Noggle, and A. E. Pifer

Phys. Rev. C 13, 1263 (1976) - Published 1 March, 1976

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The first hypernuclei production experiment using a beam of heavy ions from the Lawrence Berkeley Laboratory Bevatron is described. Mass 16 hypernuclei were produced by 2.1 GeV/nucleon ${}^{16}O$ ions incident on a polyethylene target. These relativistic hypernuclei were studied with large gap spark chambers that were electronically triggered by the low momentum $K^{+}$ meson produced in association. Analysis of 22 events yields a mean lifetime $τ ({}^{16}Z_{Λ}) = ({0.86}_{- 0.26}^{+ 0.33}) \times 10^{- 10}$ sec.

NUCLEAR REACTIONS Hypernuclei $({}^{16}O, {}^{16}N_{Λ} or {}^{16}O_{Λ}) K^{+}$ , $E = 2.1$ GeV/nucleon, polyethylene target, $σ_{t}$ roughly measured; mean lifetime of mass 16 hypernuclei measured.

Internal Bremsstrahlung spectra from ${}^{185}W$ and ${}^{32}P$

R. Prasad Babu, K. Narasimha Murty, and V. A. Narasimha Murty

Phys. Rev. C 13, 1267 (1976) - Published 1 March, 1976

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The internal bremsstrahlung spectra from the $β$ decay of ${}^{185}W$ and ${}^{32}P$ were measured using a NaI(T1) scintillation spectrometer with a standard geometrical arrangement. After making all the necessary corrections the experimental results are compared with the allowed theory of Knipp, Uhlenbeck, and Bloch (KUB theory) and also with the Coulomb corrected theories of Lewis, Ford, and Nilsson. In the case of ${}^{185}W$ it is found that from 78 to 200 keV the experimental distribution is in good agreement with the KUB theory, whereas beyond 200 keV and below 78 keV the experimental points are far above even the highest Coulomb corrected theoretical distribution of Nilsson. The internal bremsstrahlung from this isotope has not been previously investigated. In the case of ${}^{32}P$ the experimental relative intensity spectrum is compared with the KUB theory and also with the Coulomb corrected theory of Lewis and Ford. Fairly good agreement is obtained from 30 to 200 keV with the KUB theory but in the energy region from 200 to 900 keV, the experimental results deviate positively from both the KUB and Lewis and Ford theories. The experimental excess over the Lewis and Ford theory is 15% on the average.

RADIOACTIVITY ${}^{185}W$ , ${}^{32}P$ ; measured internal bremsstrahlung spectrum.

On-line $γ - γ$ angular correlations of transitions in ${}^{140}{Ba}$

L. J. Alquist, W. C. Schick, Jr., W. L. Talbert, Jr., and S. A. Williams

Phys. Rev. C 13, 1277 (1976) - Published 1 March, 1976

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Angular-correlation measurements were made on 12 direct cascades and 5 skip cascades in ${}^{140}{Ba}$ . Levels in ${}^{140}{Ba}$ were populated from the 64-sec $β$ decay of ${}^{140}{Cs}$ , which was populated from the decay of mass-separated ${}^{140}{Xe}$ . The most intense transitions were measured in coincidence with the first-excited state-to-ground-state transition in even-even ${}^{140}{Ba}$ . Definite spin assignments were made for eight levels and tentative spin assignments for five levels. Values are given for the angular-correlation coefficients, and multipolarity mixing ratios are listed where applicable. Systematics for $N = 84$ isotones are discussed in light of assignments made for ${}^{140}{Ba}$ .

RADIOACTIVITY ${}^{140}{Cs}$ (from ${}^{140}{Xe}$ decay); measured $γ - γ (θ)$ . ${}^{140}{Ba}$ deduced $J$ , $π$ . Mass-separated ${}^{140}{Xe}$ activity.

Decay of ${}^{187}W$ and the ${1 / 2}^{+}$ [411] band in odd-mass Re isotopes

D. S. Brenner and R. A Meyer

Phys. Rev. C 13, 1288 (1976) - Published 1 March, 1976

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The $γ$ -ray spectrum of 23.9-h ${}^{187}W$ has been measured using Ge(Li) detectors. Singles data obtained with a Compton-suppression $γ$ -ray spectrometer and (GeLi) detectors have been particularly useful in enabling us to detect very low intensity transitions not seen by previous experimenters. Some of these transitions have been used to establish new levels in ${}^{187}{Re}$ at 816.56, 826.6, 844.7, 960.17, 1190.38, and 1220.8 keV, and evidence is presented for assignment of the first four of these levels as the $\frac{5}{2} {\frac{1}{2}}^{+} [411]$ , $\frac{7}{2} {\frac{1}{2}}^{+} [411]$ , $\frac{7}{2} {\frac{7}{2}}^{+} [404]$ , and $\frac{5}{2} {\frac{3}{2}}^{+} [411]$ Nilsson states, respectively.

RADIOACTIVITY ${}^{187}W$ [from ${}^{186}W (n, γ)$ ; measured $E_{γ}$ , $I_{γ}$ , $T_{\frac{1}{2}}$ ; deduced $log ft$ . ${}^{187}{Re}$ deduced levels, $J$ , $π$ . Ge(Li) detectors, natural targets.

Gamma-ray angular distributions in the decays of polarized ${}^{171, 172}{Lu}$

K. S. Krane, C. E. Olsen, S. S. Rosenblum, and W. A. Steyert

Phys. Rev. C 13, 1295 (1976) - Published 1 March, 1976

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Angular distributions of numerous $γ$ rays have been measured following the decays of ${}^{171, 172}{Lu}$ polarized at low temperatures. The magnetic moments of the Lu ground state are deduced to be $| μ ({}^{171}{Lu}) | = (2.04 \pm 0.10) μ_{N}$ and $| μ ({}^{172}{Lu}) | = (2.26 \pm 0.10) μ_{N}$ . Spin assignments are deduced for several levels in ${}^{172}{Yb}$ . $\frac{E 2}{M 1}$ and $\frac{M 2}{E 1}$ mixing ratios are deduced for many of the ${}^{171}{Yb}$ and ${}^{172}{Yb}$ transitions and are compared with expectations based on the intrinsic character of the nuclear levels.

RADIOACTIVITY ${}^{171}{Lu}$ , ${}^{172}{Lu}$ ; measured $γ (θ)$ from polarized nuclei; ${}^{171, 172}{L u - d e d u c e d}$ magnetic moment $μ$ ; ${}^{171, 172}{Y b - d e d u c e d}$ multipole mixing ratios, $δ (\frac{E 2}{M 1})$ , $δ (\frac{M 2}{E 1})$ , $g_{K}$ , $g_{R}$ , $J^{π}$ , Coriolis mixing.

On the macroscopic theory of the giant dipole state

G. Bertsch and K. Stricker

Phys. Rev. C 13, 1312 (1976) - Published 1 March, 1976

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A macroscopic theory of isovector states is derived from a reduction of the random phase approximation. Using Skyrme interactions and assuming a dipole transition density of the Goldhaber-Teller shape, we find reasonable agreement with experimental excitation energies for the light nucleus ${}^{16}O$ . The theoretical excitation energies for heavy nuclei are too high by a couple of MeV. The transition density may be given a general parametric form which includes the hydrodynamic model as well as the Goldhaber-Teller model. A variational calculation of the form of the transition density gives the Goldhaber-Teller shape for light nuclei, and a shape between the hydrodynamic and Goldhaber-Teller models for ${}^{208}{Pb}$ .

NUCLEAR STRUCTURE Derived giant dipole equation; calculated energy, transition density.

Normalized shell model alpha decay theory applied to unfavored decay

T. Fliessbach, H. J. Mang, and J. O. Rasmussen

Phys. Rev. C 13, 1318 (1976) - Published 1 March, 1976

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A shell model $α$ decay theory is presented which uses correctly antisymmetrized and normalized wave functions. Numerical calculations are performed for the $α$ decay constants for unfavored decay of ${}^{211}{Po}$ and ${}^{211}{Bi}$ and for hindrance factors of excited ${}^{212}{Po}$ states. The results are compared with those of the conventional shell model $α$ decay theory.

NUCLEAR STRUCTURE $α$ decay rate theory, ${}^{211}{Bi}$ , ${}^{211, 212}{Po}$ . Calculations of rates by conventional and by revised shell model theory.

Comment on observation of two-photon decay in $n - p$ capture

D. O. Riska

Phys. Rev. C 13, 1324 (1976) - Published 1 March, 1976

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It is shown that nonorthogonality of $S = J = 1$ nucleon-nucleon wave functions is probably not a valid explanation of the disagreement between the theoretical and experimental values for the cross section for $np \to d γ γ$ .

NUCLEAR REACTIONS ${}^{1}H (n, 2 γ)$ , relation between $E$ dependence and wave function orthogonality.

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Recent Issues

Resonance neutron capture $γ$ rays from ${}^{168}{Er}$

$l$ - and $j$ -dependent effect in ( $d, p$ ) reactions

Systematics of Coulomb excitation with limited effects from nuclear distortion

Recoil distance lifetimes of rotational states in ${}^{236}U$

Resonant structures in the ${}^{12}C$ ( ${}^{12}C$ , ${}^{8}{Be}$ ) ${}^{16}O$ reaction, $E_{c . m .} = 9 to 20$ MeV

Heavy-ion fusion-evaporation reactions: high spin states in ${}^{43}{Ca}$ and ${}^{43}{Sc}$

Isomeric ${17 / 2}^{-}$ level and parity mixing in ${}^{93}{Tc}$

Multistep processes in transfer reactions induced by 56 MeV ${}^{16}O$ beam on ${}^{72, 74, 76}{Ge}$ isotopes

States in ${}^{15}N$ populated by the ${}^{11}B ({}^{6}{Li}, d)$ and ${}^{11}B ({}^{7}{Li}, t)$ reactions

Effect of deorientation in recoil-distance lifetime measurements

One-dimensional nuclear dynamics in the time-dependent Hartree-Fock approximation

Dynamical theory of nuclear fission

Production of hypernuclei in a 2.1 GeV/nucleon oxygen beam

Internal Bremsstrahlung spectra from ${}^{185}W$ and ${}^{32}P$

On-line $γ - γ$ angular correlations of transitions in ${}^{140}{Ba}$

Decay of ${}^{187}W$ and the ${1 / 2}^{+}$ [411] band in odd-mass Re isotopes

Gamma-ray angular distributions in the decays of polarized ${}^{171, 172}{Lu}$

On the macroscopic theory of the giant dipole state

Normalized shell model alpha decay theory applied to unfavored decay

Comment on observation of two-photon decay in $n - p$ capture

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