![]() The atomic physics research consists of six experimental programs as follows: (1) dissociation and other interactions of energetic molecular ions in solid and gaseous targets (2) electron spectroscopy with fast atomic and molecular-ion beams (3) beam-foil research and collision dynamics of heavy ions (4) photoionization-photoelectron research (5) high-resolution, laser-rf spectroscopy with atomic and molecular beams and (6) theoretical atomic physics. Results of particular interest were obtained in the nuclear force program where the inclusion of 3-body forces led to simultaneous improvement in the binding of /sup 3/He and /sup 4/He more ยป and saturation of nuclear matter. Nuclear structure theory was applied to interpret decays of high-spin states and inelastic pion scattering. In nuclear theory, the coupled-channel code for treating heavy-ion inelastic scattering was completed and application to particular experiments began. A precision measurement is under way of the /sup 7/Be(p.gamma.) cross section, one of the key components in the solar neutrino anomaly. The importance of the time component of the weak axial-vector current has been studied through the. Construction of the ATLAS facility began in FY 1982 and all progress has been on schedule. In heavy-ion physics, the superconducting linac booster is being used with increasing scientific profit. A major effort is being devoted to the scientific and technical considerations involved in proposing to build a multi-GeV C.W. An experiment to study neutrino oscillations is being planned at LAMPF with substantial involvement from Argonne. ![]() ![]() In medium-energy pion physics, considerable progress has been made in understanding the propagation and absorption of pions (deltas) in the nuclear medium. ![]()
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