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首页> 外文期刊>Journal of Molecular Spectroscopy >SELF- AND AIR-BROADENING IN THE NU(3) BAND OF SO2
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SELF- AND AIR-BROADENING IN THE NU(3) BAND OF SO2

机译：SO2的NU（3）波段中的自发和通气

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The quantum number dependence of self- and air-broadening coefficients of 33 transitions in the nu(3) band of SO2 with 4 less than or equal to J '' less than or equal to 61, 0 less than or equal to K-a '' less than or equal to 18 was measured with a pulse-driven diode laser spectrometer. Twenty-five lines of the P-branch, five lines of the R-branch, and three lines of the Q-branch were studied. The self-broadening coefficients gamma(so2-so2) vary between 0.151 and 0.498 cm(-1)/atm. For small K-a '' values the self-broadening coefficients gamma(so2-so2) show a strong scattering of data, whereas a pronounced decrease with increasing quantum number K-a '' was found for lines with K-a '' greater than or equal to 10. For K-a '' values of about 3, the largest broadening coefficients were measured. No significant tendency in the J '' dependence was found. Quantum number dependence and absolute values are in good agreement with previous experimental results for the nu(1) band of SO2. The situation in the case of collisions with air is similar, where the gamma(so2-air) values vary between 0.061 and 0.130 cm(-1)/atm and no significant dependence of the broadening coefficients was observed as in the case of the nu(1) band. (C) 1996 Academic Press, Inc. [References: 15]
机译：SO2的nu（3）波段中33个跃迁的自增宽系数和空气膨胀系数的量子数依赖性，其中4小于或等于J''小于或等于61,0小于或等于Ka''用脉冲驱动二极管激光光谱仪测量小于或等于18的值。研究了P分支的25行，R分支的5行和Q分支的3行。自膨胀系数gamma（so2-so2）在0.151和0.498 cm（-1）/ atm之间变化。对于较小的Ka''值，自扩展系数gamma（so2-so2）表现出强烈的数据散射，而对于Ka”大于或等于10的线，发现随着量子数Ka”的增加而明显降低。对于大约为3的Ka'值，测量到最大的扩宽系数。没有发现J''依赖性的显着趋势。量子数依赖性和绝对值与SO2 nu（1）谱带的先前实验结果非常吻合。与空气碰撞的情况类似，其中gamma（so2-空气）值在0.061和0.130 cm（-1）/ atm之间变化，并且与nu情况下观察到的扩宽系数没有显着相关性（1）乐队。 （C）1996 Academic Press，Inc. [参考：15]

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