[en] This article gives a survey of the different methods which can be used to polarize the nuclear spin of helium-3. These techniques are particularly discussed in relation to the production of polarized helium-3 targets for nuclear physics experiments, such as electron or proton scattering and neutron spin filters. Some emphasis is given to the development of new powerful solid state lasers now used for helium optical pumping. Applications to atomic physics and quantum statistics are also mentioned. A recent experiment is finally described which shows that the heat conductivity of the helium-3 gas at low temperature depends on the nuclear spin polarization. This is a consequence of the quantum indistinguishability of the particles which plays a large role in binary collisions, thus influencing the transport properties of the gas

[en] The HERMES Laser-Driven Target Task Force (Argonne, Erlangen, Illinois and Colorado) is charged with developing a polarized H/D target for use in the HERA ring at DESY. Rapid progress was made in the beginning of 1996, leading us to the decision to test the target in a realistic experimental environment. In particular, polarizations of 0.6 and flows above 10¹⁸thinspatoms·s^-1 have been achieved on the bench. The laser-driven target and a simple detector system are currently installed in Cooler storage ring at the Indiana University Cyclotron Facility in order to test its applicability to nuclear physics experiments. Target polarizations are being measured using the rvec H(p,p) and rvec D(p,p) reactions. Initial tests were reasonably successful and the target is well along toward becoming viable for nuclear physics. copyright 1998 American Institute of Physics

[en] The UNH Nuclear Physics Group is developing polarized ³He cells for use in approved experiments with electron beams and neutron beams. We also have begun to apply our expertise to magnetic resonance imaging experiments I list our projects and review several areas where we have been focusing our efforts. copyright 1998 American Institute of Physics

[en] This paper will describe the polarized internal gas target installed in the Indiana Cooler and focus to a large extend on operational properties from the experimenters point of view. Measurements of pp elastic spin correlation parameters A_xx, A_yy, A_xz and A_zz have been finished and some of the recent results will be presented as well. Studies of systematic effects from background reactions and target beam interactions will be presented also. copyright 1998 American Institute of Physics

[en] The experiment on elastic and inelastic scattering of 2 GeV electrons by internal polarized target is in progress at the VEPP-3 storage ring in Novosibirsk. It close-quote s carried out by Novosibirsk/St.-Petersburg/Tomsk/Argonne/Illinois/NIKHEF collaboration. A cryogenic Atomic Beam Source having five superconducting sextupoles is under manufacturing to feed by polarized deuterium atoms an internal storage cell target. All the magnets have been manufactured and tested. The magnetic poletip field up to 4.8 T was measured at the cylindrical magnets having 44 mm inner diameter while 3.1 T and 4.0 T were measured for the tapered magnets. The dissociation degree of about 90% has been achieved for a gas throughput 1mbx1/sec. The expected flux of polarized deuterium atoms into the storage cell is 1.0x10¹⁷at/sec (in two substrates). The geometry of the magnetic system, results on the dissociation measurements, testing of the superconducting magnet and expected parameters of the target are presented. copyright 1998 American Institute of Physics

[en] A laser driven source of polarized hydrogen and deuterium has been installed in the Cooler Ring at the Indiana University Cyclotron Facility. Polarized nuclei from the source are injected into a storage tube, and the resulting target has been used in a scattering experiment with 200 MeV proton beam. This paper discusses the performance of the source, including measurements of atomic fraction and electron polarization. copyright 1998 American Institute of Physics

[en] At the University of New Hampshire we have a program of polarizing ³He samples for use as targets in electron scattering experiments, neutron spin filters, and for magnetic resonance imaging. The objective of this poster was to give an introduction to polarized ³He neutron spin filters and to outline the fabrication of spin-exchange polarized ³He neutron spin filters at UNH for two recent measurements at LANSCE. copyright 1998 American Institute of Physics

[en] The recent past has shown a significant progress in the spin exchange optical pumping technology. Spin-exchange optical pumping is a process whereby photon angular momentum is transferred to target nuclei through spin-exchange collisions with polarized alkali-metal atoms. In spite of their small numbers, alkali-metal atoms could significantly dilute the nucleon polarization in the target, because of there are a large number of unpolarized nucleons in the alkali nuclei. Also, if potassium atoms are used in the pumping cell with a density of one percent of the hydrogen density, the losses of the high energy electrons in the storage ring due to the presence of potassium is two time higher than the losses due to the hydrogen

[en] We describe two polarimetry techniques used in the HERMES experiment. They are both based on the principle of measuring the rate and circular polarization of photons emitted from excited states of target atoms and can be used together to directly access information regarding the target atoms which interact with the beam. copyright 1998 American Institute of Physics

[en] Using the ultra-cold electron-spin-polarized atomic hydrogen technique, one can produce a slow monochromatic beam for use as a polarized jet target. We will first review the development of the ultra-cold technique and then discuss the recent progress on Michigan close-quote s Mark-II ultra-cold proton-spin-polarized hydrogen jet target. copyright 1998 American Institute of Physics