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对钠蒸气中的碰撞能量合并过程Na(3PJ)+Na(3PJ′)→Na(nLJ″)+Na(3S1/2)进行了实验研究．在低钠原子密度条件下，用激光将原子分别激发到3P1/2或3P3/2态，测量从nLJ″态发出的荧光强度比和Na(3P3/2)与Na(3P1/2)的密度比，给出了J′=J=1/2或3/2，nLJ″=4D3/2，4D5/2,4F5/2，4F7/2，5S1/2的速率系数对打的比值、当销原子密度足够高时，3P态以统计比率布居，得到了k(nLJ″)(1/2,3/2)对k5S(3/2,3/2)的比值．The collisional energy pooling process in a sodium vapor Na(3PJ)+Na(3PJ′)→Na(nLJ″)+Na(3S1/2) is experimentally investigated. At sufficiently low sodium densities,such that only the optically excited 3PJ state is significantly populated, the ratios of nLJ″ fluorescence intensities and the relative density of Na(3P1/2) versus the density of Na(3P3/2) are measured. The ratios of rate coefficients k(nLJ′)(J, J′) relative to k5S(3/2,3/2) are given for nLJ″= 4D3/2, 4D5/2, 4F5/2, 4F7/2, and 5S1/2, each for J = J′ =1/2 and 3/2. At high sodium densities, the 3P states are populated in nearly statistical ratios, the ratios of the k(nLJ″)(1/2,3/2) relative to k5S(3/2,3/2) are obtained.
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中国物理学会期刊
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