6533b7dcfe1ef96bd12732f5
RESEARCH PRODUCT
A dense polarized 3He target based on compression of optically pumped gas
Michèle LeducReinhard SurkauG. EckertM. WernerErnst W. OttenL.d. SchearerPierre-jean NacherM. MeyerhoffWerner Heilsubject
PhysicsNuclear and High Energy Physicsbusiness.industryPhysics::Opticschemistry.chemical_elementPolarization (waves)Laserlaw.inventionElectric discharge in gasesToepler pumpOptical pumpingOpticschemistrylawTorrMetastabilityAtomic physicsbusinessInstrumentationHeliumdescription
Abstract 3 He-gas is spin polarized by the method of optical pumping of metastables and metastability exchange in a low pressure gas discharge. At a pressure of p ≈ 1.5 Torr a volume of 1 l is polarized within about 30 s to a degree of 50% with 300 mW of incident light from an argon-ion laser pumped LNA laser, tuned to the λ = 1.083 μm resonance line. The polarized gas is compressed by a Toepler pump into a target cell of 120 cm 3 volume. In a first attempt a steady state polarization of 30% has been achieved in the target at a pressure of 685 Torr. The paper analyses the essential parameters governing this technique and pilotes its experimental realization.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-08-01 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |