• ARTICLES
  • General Physics, Atomic and Molecular Structure
  • Atomic and Molecular Collision Processes and Interactions
  • Atomic and Molecular Spectroscopy, Interaction with Radiation
  • Quantum Optics, Nonlinear Optics, and Related Topics
  • Plasmas and Fluids
  • Statistical Physics, Biological Physics, and Many-Body Topics
• BRIEF REPORTS
  • Fundamental Concepts
  • Atomic and Molecular Collision Processes and Interactions
  • Atomic and Molecular Spectroscopy, Interaction with Radiation
  • Quantum Optics, Nonlinear Optics, and Related Topics
  • Plasmas and Fluids
  • Statistical Physics, Biological Physics, and Many-Body Topics
• COMMENTS
• ERRATA
• RAPID COMMUNICATIONS
  • Rapid Communications

ARTICLES

General Physics, Atomic and Molecular Structure

•	Electronic structure of the Fe2 molecule in the local-spin-density approximation S. Dhar and N. R. Kestner pp. 1111-1119 [View Page Images , PDF (1501 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Application of the generalized-exchange local-spin-density-functional theory: Negative ions Yufei Guo, S. Manoli, and M. A. Whitehead pp. 1120-1125 [View Page Images , PDF (666 kB), or Buy this Article (Use Article Pack) ]

•	Numerical study of the role of shielding and exchange effects and of correlation and relativistic corrections in the Dirac-Fock approximation S. S. Liaw, G. Feldman, and T. Fulton pp. 1126-1136 [View Page Images , PDF (1394 kB), or Buy this Article (Use Article Pack) ]

•	Relativistic equation for the multielectron atom A. A. Broyles pp. 1137-1148 [View Page Images , PDF (1567 kB), or Buy this Article (Use Article Pack) ]

•	Density-functional theory of many-electron systems subjected to time-dependent electric and magnetic fields Swapan K. Ghosh and Asish K. Dhara pp. 1149-1158 [View Page Images , PDF (1459 kB), or Buy this Article (Use Article Pack) ]

•	Covariant phase-space representation for harmonic oscillators Y. S. Kim and E. P. Wigner pp. 1159-1167 [View Page Images , PDF (1196 kB), or Buy this Article (Use Article Pack) ]

•	Dynamical-group approach to the Hulthén potential P. Matthys and H. De Meyer pp. 1168-1171 [View Page Images , PDF (509 kB), or Buy this Article (Use Article Pack) ]

•	Impact broadening of the dtμ formation resonances N. T. Padial, James S. Cohen, and M. Leon pp. 1172-1176 [View Page Images , PDF (690 kB), or Buy this Article (Use Article Pack) ]

•	Area of overlap and interference in phase space versus Wigner pseudoprobabilities W. Schleich, D. F. Walls, and J. A. Wheeler pp. 1177-1186 [View Page Images , PDF (1286 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Dileptonic-helium ground-state energy P. du van der Merwe pp. 1187-1192 [View Page Images , PDF (830 kB), or Buy this Article (Use Article Pack) ]

•	Loosely bound states of three particles Zheng Zhen and Joseph Macek pp. 1193-1201 [View Page Images , PDF (1192 kB), or Buy this Article (Use Article Pack) ]

Atomic and Molecular Collision Processes and Interactions

•	Evaluation of nlm-n’l’m’ capture amplitude in the target continuum distorted-wave theory N. C. Deb pp. 1202-1206 [View Page Images , PDF (492 kB), or Buy this Article (Use Article Pack) ]

•	Total-cross-section measurements for positron and electron scattering by O2, CH4, and SF6 M. S. Dababneh, Y.-F. Hsieh, W. E. Kauppila, C. K. Kwan, Steven J. Smith, T. S. Stein, and M. N. Uddin pp. 1207-1216 [View Page Images , PDF (1381 kB), or Buy this Article (Use Article Pack) ]

•	Time-dependent aspects of electron degradation. II. General theory Mitio Inokuti, Mineo Kimura, and Michael A. Dillon pp. 1217-1224 [View Page Images , PDF (1205 kB), or Buy this Article (Use Article Pack) ]

•	Collision energy pooling for Sr(5 3PJ)+Sr(5 J’3) → Sr(6 3,1S)+Sr(5 1S) J. F. Kelly, M. Harris, and A. Gallagher pp. 1225-1229 [View Page Images , PDF (821 kB), or Buy this Article (Use Article Pack) ]

•	Nonclassical photon states generated by stimulated Compton scattering Ching Tsung Lee pp. 1230-1239 [View Page Images , PDF (1222 kB), or Buy this Article (Use Article Pack) ]

•	Determination of cross sections and oscillator strengths for argon by electron-energy-loss spectroscopy G. P. Li, T. Takayanagi, K. Wakiya, H. Suzuki, T. Ajiro, S. Yagi, S. S. Kano, and H. Takuma pp. 1240-1247 [View Page Images , PDF (979 kB), or Buy this Article (Use Article Pack) ]

•	Nonsingular integral equation for two-body scattering and applications in two and three dimensions H. T. Stoof, L. P. de Goey, W. M. Rovers, P. S. Kop Jansen, and B. J. Verhaar pp. 1248-1257 [View Page Images , PDF (1398 kB), or Buy this Article (Use Article Pack) ]

Atomic and Molecular Spectroscopy, Interaction with Radiation

•	Photoionization of magnesium from the excited 3snd 1D states to the doubly excited 3pnl 1F autoionization states T. N. Chang and X. Tang pp. 1258-1262 [View Page Images , PDF (833 kB), or Buy this Article (Use Article Pack) ]

•	Hyperfine structure and isotopic shift of the n 2PJ levels (n=7–10) of 203,205Tl measured by Doppler-free two-photon spectroscopy M. Grexa, G. Hermann, G. Lasnitschka, and B. Fricke pp. 1263-1269 [View Page Images , PDF (910 kB), or Buy this Article (Use Article Pack) ]

•	Two-photon spectroscopy of singlet autoionizing levels of atomic sulfur S. T. Pratt pp. 1270-1278 [View Page Images , PDF (1352 kB), or Buy this Article (Use Article Pack) ]

•	Numerical multiconfiguration Hartree-Fock studies of atomic photoionization cross sections: Dynamical core-polarization effects in atomic sodium H. P. Saha, C. Froese-Fischer, and P. W. Langhoff pp. 1279-1285 [View Page Images , PDF (1148 kB), or Buy this Article (Use Article Pack) ]

•	Anomalous x-ray atomic scattering factor for some light elements M. S. Wang and Sheau-Huey Chia pp. 1286-1288 [View Page Images , PDF (332 kB), or Buy this Article (Use Article Pack) ]

•	Coupled-electron-pair approximation calculations on open-shell molecules: The two lowest states of HeNe+ J. Wasilewski, V. Staemmler, and S. Koch pp. 1289-1299 [View Page Images , PDF (1866 kB), or Buy this Article (Use Article Pack) ]

Quantum Optics, Nonlinear Optics, and Related Topics

•	Spontaneous initiation, radiation propagation, and gain buildup in hot-plasma x-ray lasers G. Hazak and A. Bar-Shalom pp. 1300-1308 [View Page Images , PDF (1256 kB), or Buy this Article (Use Article Pack) ]

•	Resonant operation of the cross-field free-electron laser: Kinetic and fluid equilibria G. L. Johnston, F. Hartemann, R. C. Davidson, and G. Bekefi pp. 1309-1318 [View Page Images , PDF (1588 kB), or Buy this Article (Use Article Pack) ]

•	Quantum-field superpositions via self-phase modulation of coherent wave packets T. A. Kennedy and P. D. Drummond pp. 1319-1326 [View Page Images , PDF (1416 kB), or Buy this Article (Use Article Pack) ]

•	Light-induced-drift stationary states E. Mariotti, J. H. Xu, M. Allegrini, G. Alzetta, S. Gozzini, and L. Moi pp. 1327-1334 [View Page Images , PDF (1128 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Dissipative effects on squeezed light generated in systems governed by the nonlinear Schrödinger equation M. J. Potasek and B. Yurke pp. 1335-1348 [View Page Images , PDF (1242 kB), or Buy this Article (Use Article Pack) ]

•	Quantum tunneling rates in dispersive optical bistability for low cavity damping H. Risken and K. Vogel pp. 1349-1357 [View Page Images , PDF (1223 kB), or Buy this Article (Use Article Pack) ]

•	Buildup of x-ray laser gain by fluctuations in channeled relativistic beam systems M. Strauss pp. 1358-1362 [View Page Images , PDF (743 kB), or Buy this Article (Use Article Pack) ]

Plasmas and Fluids

•	Collisionless shock in a laser-produced ablating plasma A. R. Bell, P. Choi, A. E. Dangor, O. Willi, D. A. Bassett, and C. J. Hooker pp. 1363-1369 [View Page Images , PDF (1049 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Characterization of morphology transitions in diffusion-controlled systems E. Ben-Jacob, P. Garik, T. Mueller, and D. Grier pp. 1370-1380 [View Page Images , PDF (2277 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Static and dynamic correlations in fluids with internal quantum states: Computer simulations and theory P. de Smedt, P. Nielaba, J. L. Lebowitz, J. Talbot, and L. Dooms pp. 1381-1394 [View Page Images , PDF (1750 kB), or Buy this Article (Use Article Pack) ]

•	Wetting-nonwetting transition at the liquid-air interface of methanol-cyclohexane-water mixtures M. Kahlweit, G. Busse, D. Haase, and J. Jen pp. 1395-1401 [View Page Images , PDF (1221 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Full second-order cold-fluid theory of the diocotron and magnetron resonances D. J. Kaup, S. Roy Choudhury, and Gary E. Thomas pp. 1402-1409 [View Page Images , PDF (1398 kB), or Buy this Article (Use Article Pack) ]

•	Development of an electron avalanche and its transition into streamers E. E. Kunhardt and Y. Tzeng pp. 1410-1421 [View Page Images , PDF (1373 kB), or Buy this Article (Use Article Pack) ]

•	Hierarchy of collapse regimes for upper-hybrid and lower-hybrid waves E. A. Kuznetsov and M. M. Škorić pp. 1422-1426 [View Page Images , PDF (652 kB), or Buy this Article (Use Article Pack) ]

•	Radiation of ion-sound waves from a pulsating Langmuir soliton Y. Murusidze, D. D. Tskhakaya, S. Kuhn, and M. Hörhager pp. 1427-1432 [View Page Images , PDF (721 kB), or Buy this Article (Use Article Pack) ]

•	Analytic solutions for Rayleigh-Taylor growth rates in smooth density gradients David H. Munro pp. 1433-1445 [View Page Images , PDF (2115 kB), or Buy this Article (Use Article Pack) ]

•	Transport properties of electrons in water vapor K. F. Ness and R. E. Robson pp. 1446-1456 [View Page Images , PDF (1477 kB), or Buy this Article (Use Article Pack) ]

•	‘‘Elapsed times’’ in Monte Carlo simulations for strongly coupled classical one-component plasmas Shuji Ogata and Setsuo Ichimaru pp. 1457-1460 [View Page Images , PDF (539 kB), or Buy this Article (Use Article Pack) ]

•	X-ray observations between 10 and 150 keV from the Alcator-C tokamak J. E. Rice and K. L. Chamberlain pp. 1461-1467 [View Page Images , PDF (857 kB), or Buy this Article (Use Article Pack) ]

•	Pattern selection in steady binary-fluid convection Mary Silber and Edgar Knobloch pp. 1468-1477 [View Page Images , PDF (1316 kB), or Buy this Article (Use Article Pack) ]

•	van der Waals gas bubble as a dynamical system R. A. Wentzell pp. 1478-1481 [View Page Images , PDF (491 kB), or Buy this Article (Use Article Pack) ]

•	Simultaneous diffusion and reaction processes in plasma dynamics Hans Wilhelmsson pp. 1482-1489 [View Page Images , PDF (1111 kB), or Buy this Article (Use Article Pack) ]

•	Nonlinear solution for optimal shaping of the driving electron beam in the plasma wake-field accelerator Yiton T. Yan and Hudong Chen pp. 1490-1494 [View Page Images , PDF (744 kB), or Buy this Article (Use Article Pack) ]

Statistical Physics, Biological Physics, and Many-Body Topics

•	Persistence of three-frequency quasiperiodicity under large perturbations Peter M. Battelino pp. 1495-1502 [View Page Images , PDF (1123 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Topological and metric properties of Hénon-type strange attractors Predrag Cvitanović, Gemunu H. Gunaratne, and Itamar Procaccia pp. 1503-1520 [View Page Images , PDF (2409 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Effective potential and finite-temperature renormalization of the φ4 chain Riccardo Giachetti, Valerio Tognetti, and Ruggero Vaia pp. 1521-1526 [View Page Images , PDF (748 kB), or Buy this Article (Use Article Pack) ]

•	Director orientation at the nematic-phase–isotropic-phase interface for the model of hard spherocylinders R. Holyst and A. Poniewierski pp. 1527-1533 [View Page Images , PDF (877 kB), or Buy this Article (Use Article Pack) ]

•	Singularity spectrum for period n-tupling in area-preserving maps Sang-Yoon Kim and Bambi Hu pp. 1534-1537 [View Page Images , PDF (484 kB), or Buy this Article (Use Article Pack) ]

•	Solitons hiding in DNA and their possible significance in RNA transcription E. W. Prohofsky pp. 1538-1541 [View Page Images , PDF (624 kB), or Buy this Article (Use Article Pack) ]

•	Study of phase-separation dynamics by use of cell dynamical systems. II. Two-dimensional demonstrations S. Puri and Y. Oono pp. 1542-1565 [View Page Images , PDF (3264 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Organization of periodic orbits in the driven Duffing oscillator H. G. Solari and R. Gilmore pp. 1566-1572 [View Page Images , PDF (1238 kB), or Buy this Article (Use Article Pack) ]

•	Direct measurement of orientation correlations in a two-dimensional liquid-crystal system David H. Van Winkle and Noel A. Clark pp. 1573-1589 [View Page Images , PDF (3316 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

BRIEF REPORTS

Fundamental Concepts

•	Berry phases for partial cycles Thomas F. Jordan pp. 1590-1592 [View Page Images , PDF (539 kB), or Buy this Article (Use Article Pack) ]

•	Accurate theoretical prediction of the experimental ground-state total atomic energies Mariusz Klobukowski and Serafin Fraga pp. 1593-1594 [View Page Images , PDF (212 kB), or Buy this Article (Use Article Pack) ]

•	Comparison of 1/N expansion and shifted 1/N expansion for eigenenergies of an atomic potential Y. P. Varshni pp. 1595-1598 [View Page Images , PDF (437 kB), or Buy this Article (Use Article Pack) ]

Atomic and Molecular Collision Processes and Interactions

•	Collision-limited lifetimes of atom traps J. E. Bjorkholm pp. 1599-1600 [View Page Images , PDF (339 kB), or Buy this Article (Use Article Pack) ]

•	Ionization of K(nd) Rydberg-state atoms at a surface D. F. Gray, Z. Zheng, K. A. Smith, and F. B. Dunning pp. 1601-1603 [View Page Images , PDF (469 kB), or Buy this Article (Use Article Pack) ]

•	Close-coupling analysis of electron-impact excitation of Na(4s) Alfred Z. Msezane, Carlos R. Handy, Giorgio Mantica, and Joongyu Lee pp. 1604-1607 [View Page Images , PDF (652 kB), or Buy this Article (Use Article Pack) ]

•	Photon cross sections near the x-ray-absorption edges of Ti, Ni, Pt, and Au K. Parthasaradhi, A. Esposito, S. Mobilio, and M. Pelliccioni pp. 1608-1611 [View Page Images , PDF (428 kB), or Buy this Article (Use Article Pack) ]

•	Triple-center determination of differential cross sections for electron transfer and elastic scattering in α-H collisions Thomas G. Winter pp. 1612-1615 [View Page Images , PDF (670 kB), or Buy this Article (Use Article Pack) ]

Atomic and Molecular Spectroscopy, Interaction with Radiation

•	Precision measurement of the hyperfine structure of the 133Cs 6P3/2 state Carol E. Tanner and Carl Wieman pp. 1616-1617 [View Page Images , PDF (246 kB), or Buy this Article (Use Article Pack) ]

Quantum Optics, Nonlinear Optics, and Related Topics

•	Approximate analytical approaches to nonlinear pulse propagation in optical fibers: A comparison D. Anderson, M. Lisak, and T. Reichel pp. 1618-1620 [View Page Images , PDF (409 kB), or Buy this Article (Use Article Pack) ]

•	Radiation pressure from the vacuum: Physical interpretation of the Casimir force P. W. Milonni, R. J. Cook, and M. E. Goggin pp. 1621-1623 [View Page Images , PDF (401 kB), or Buy this Article (Use Article Pack) ]

Plasmas and Fluids

•	Collective mechanism for atomic recombination in plasmas M. D. Girardeau and F. A. Gutierrez pp. 1624-1627 [View Page Images , PDF (618 kB), or Buy this Article (Use Article Pack) ]

•	Local order in a dense liquid H. J. Hanley, T. R. Welberry, D. J. Evans, and G. P. Morriss pp. 1628-1631 [View Page Images , PDF (640 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

Statistical Physics, Biological Physics, and Many-Body Topics

•	Integro-differential Schrödinger equation as an extension of the differential Schrödinger equation B. Baseia pp. 1632-1635 [View Page Images , PDF (465 kB), or Buy this Article (Use Article Pack) ]

•	Reconciliation of 1/d corrections to the Eden model R. Friedberg and W. M. Zheng pp. 1636-1637 [View Page Images , PDF (306 kB), or Buy this Article (Use Article Pack) ]

•	Continuum limit of sine-Gordon and φ4 chains by use of an effective potential Riccardo Giachetti, Valerio Tognetti, and Ruggero Vaia pp. 1638-1640 [View Page Images , PDF (420 kB), or Buy this Article (Use Article Pack) ]

•	Local conservation laws and equations of motion for Green’s functions K. Gütter, P.-G. Reinhard, and C. Toepffer pp. 1641-1644 [View Page Images , PDF (354 kB), or Buy this Article (Use Article Pack) ]

•	Period-doubling bifurcation in an electronic circuit with a fast-recovery diode and square-wave input Chil-Min Kim, Chang-Ho Cho, Chul-Se Lee, Jae-Hag Yim, Jintai Kim, and Yongduk Kim pp. 1645-1648 [View Page Images , PDF (510 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

•	Noise reduction in dynamical systems Eric J. Kostelich and James A. Yorke pp. 1649-1652 [View Page Images , PDF (587 kB), or Buy this Article (Use Article Pack) ]

•	Electroclinic effect above the smectic-A–smectic-C/emph> transition Ruozi Qiu, John T. Ho, and S. K. Hark pp. 1653-1655 [View Page Images , PDF (357 kB), or Buy this Article (Use Article Pack) ]

COMMENTS

•	Comment on ‘‘Rotational hyperpolarizability of a homonuclear diatomic molecule’’ David M. Bishop and D. P. Shelton pp. 1656 [View Page Images , PDF (113 kB), or Buy this Article (Use Article Pack) ]

•	Comment on ‘‘Obtainment of thermal noise from a pure quantum state’’ S. M. Barnett and P. L. Knight pp. 1657-1658 [View Page Images , PDF (280 kB), or Buy this Article (Use Article Pack) ]

ERRATA

•	Erratum: Discrepancy between theory and experiment for noncoplanar symmetric (e,2e) momentum profiles of H2(1Σg+) J. W. Liu pp. 1659 [View Page Images or PDF (74 kB) ]

•	Erratum: Rydberg states of helium: Relativistic and second-order corrections Richard J. Drachman pp. 1659 [View Page Images or PDF (74 kB) ]

•	Erratum: Electric-field-induced modulations in photodetachment [Phys. Rev. A 37, 632 (1988)] A. R. Rau and Hin-Yiu Wong pp. 1660 [View Page Images or PDF (103 kB) ]

•	Erratum: Traveling waves in large-aspect-ratio thermosolutal convection A. E. Deane, E. Knobloch, and J. Toomre pp. 1661 [View Page Images , PDF (149 kB), or Figure Images ]

•	Erratum: Perturbation approximations for scattering amplitudes in ion-atom collisions Joseph Macek pp. 1661 [View Page Images or PDF (149 kB) ]

RAPID COMMUNICATIONS

Rapid Communications

Alignment of H(2p) in H+-H,H2 collisions R. Hippler, H. Madeheim, W. Harbich, H. Kleinpoppen, and H. O. Lutz pp. 1662-1665 [View Page Images , PDF (605 kB), or Buy this Article (Use Article Pack) ]

Forced rotational autoionization of high-lying states of H2 Emily Y. Xu, Hanspeter Helm, and Ravinder Kachru pp. 1666-1669 [View Page Images , PDF (597 kB) , Figure Images, or Buy this Article (Use Article Pack) ]

Tricritical exponents for trails on a square lattice obtained by the scanning simulation method H. Meirovitch and H. A. Lim pp. 1670-1672 [View Page Images , PDF (373 kB), or Buy this Article (Use Article Pack) ]