Results from the PSI 6LiD Target
In 1978 Abragam and co-workers [4,5] achieved a 6Li-polarization of 40% in samples of a few mm3 at dilution refrigerator temperatures in a field of 2.5 T with a homogeneity better than 5.10-6. The paramagnetic centres in these samples were obtained by irradiation with 3 MeV electrons at liquid argon temperatures. At Saclay, DPhPE, the technique of the irradiation of larger quantities of 6LiD and 7LiH was investigated extensively by Chaumette et al. [6,7,8]. Their best polarization results for 6LiD at 2.5 T in terms of growth time and polarization were 6Li and D polarization of 37% and 43, respectively, in a sample irradiated in a special argon gas cryostat at 180 K with a total flux of about 2.1017 electrons/cm2.
KeywordsTarget Material Microwave Cavity Dilution Refrigerator Paul Scherrer Institute Polarize Target
Unable to display preview. Download preview PDF.
- 2.R. Tacik et al., Proc. XII PANIC Conf., Boston, June 25–29, 1990Google Scholar
- 3.S. Ritt et al., accepted for publication in Phys. Rev.Google Scholar
- 4.A. Abragam, Internat. Symp. on High Energy Physics with Polarized Beams and Polarized Targets, Argonne, Illinois, 1978, p.Google Scholar
- 6.P. Chaumette et al., Proc. 4th Internat. Workshop on Polarized Target Materials and Techniques, Ed. W. Meyer, Bonn (Germany), Sept. 3–6, 1984, p. 81–83.Google Scholar
- 7.P. Chaumette et al Proc. Internat. Workshop on Polarized Sources and Targets, Eds. S. Jaccard and S. Mango, Montana (Switzerland), Jan 13–17, 1986, p. 767–771.Google Scholar
- 8.G. Durand et al., Proc. Internat. Symp. on High Energy Spin Physics, Ed. K.J. Heller, Minneapolis (USA), Sept 12–17,1988, (Am. Inst. Phys. Conf. Proc. NO. 187), p. 1275–1280Google Scholar
- 10.M. Wessler et al., these proceedings.Google Scholar