光抽运自旋极化固态129Xe
Nuclear polarized solid 129Xe by laser pumping
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摘要: 用半导体激光抽运极化129Xe气体,在80-SY核磁共振谱仪上单次采样得NMR信号,信噪比大于100,信号增强因子大于103,降温凝固成固态后,其信噪比大于50,初步测得固态(约80K)129Xe弛豫时间为4400s.Abstract: The nuclear polarized 129Xe gas by diode laser pumping was measured with a WP 80SY NMR spectrometer.We found that the SNR was greater than 100,and the signal enhancing factor was greater than 1000.After frozento solid state(80K),SNR was better than 50,the relaxation time was 4400s.
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