Nuclear structure research at the Triangle Universities Nuclear Laboratory

Details Nuclear structure research at the Triangle Universities Nuclear Laboratory Nuclear structure research at the Triangle Universities Nuclear Laboratory

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992rtu..rept.....m&link_type=abstract

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Physics

Nuclear Physics

Nuclear Reactions, Nuclear Structure, Nuclei (Nuclear Physics), Nucleon-Nucleon Interactions, Elastic Scattering, Fast Neutrons, Helium Isotopes, Holmium, Many Body Problem, Neutrons, Nuclear Astrophysics, Polarimeters, Radiation Counters, Scattering Amplitude

Scientific paper

Studies of fundamental symmetries by the TRIPLE collaboration using the unique capabilities at LAMTF have found unexpected systematics in the parity-violating amplitudes for epithermal-neutron scattering. Tests to lower the present limits on time-reversal-invariance violation in the strong interaction are being made at in experiments on the scattering of polarized fast neutrons from aligned holmium targets. Studies of few-nucleon systems have received increasing emphasis over the past year, involving a broad program for testing the low- to medium-energy internucleon interactions, from the tensor component in n-p scattering and the n-n scattering lengths, through three-nucleon systems and the alpha particle, on up to Be-8. Of particular interest are three-nucleon systems, both in elastic scattering and in three-body breakup. Beam requirements range from production of intense and highly-polarized neutron beams to tensor-polarized beams for measurements at both very low energies (25-80 keV) and at tandem energies for definitive measurements of D-state components of the triton, He-3, and He-4 obtained from transfer reactions. The program in nuclear astrophysics expanded during 1991-1992. Several facets of the nuclear many-body problem and of excitation mechanisms of the nucleus are being elucidated, including measurements and analyses to elucidate the neutron-nucleus elastic-scattering interaction over a wide range of nuclei and energies. Several projects involved developments in electronuclear physics, instrumentation, RF-transition units, and low-temperature bolometric particle detectors.

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