Author/Authors :
Korsch، نويسنده , , W. and Carr، نويسنده , , R.W. and DeSchepper، نويسنده , , D. and Dvoredsky، نويسنده , , A. and Kramer، نويسنده , , L.H. and Li، نويسنده , , Y. and McKeown، نويسنده , , R.D. and Milner، نويسنده , , R.G. and Pate، نويسنده , , S.F. and Pitt، نويسنده , , M.L. and Shin، نويسنده , , T.، نويسنده ,
Abstract :
The temperature dependence of the polarization of 3He atoms in an internal target cell has been studied. Metastable optically pumped polarized 3He atoms with typical polarization values of 40% were injected into a thin-walled aluminum cell of 40 cm length and a 29.0 × 9.8 mm2 elliptical cross-section. The cell temperature was varied between 5 and 85 K. The polarization inside the target cell was measured via an asymmetry in the 3He→(d,p)4He reaction at a deuteron energy of 4 MeV. An exponential decrease of the polarization was found for temperatures less than 15 K. For a temperature of ∼6 K a polarization consistent with zero was measured.
