原行星大气中富碳分子的电子附着率：化学差异的作用
Electron-attachment rates for carbon-rich molecules in protoplanetary atmospheres: the role of chemical differences
摘要：
在星际介质中形成的阴离子物种的相互作用的线性分子含有碳，氮和氢作为原子成分（多炔）与自由电子在环境中的碰撞动力学的量子处理建模。随后的积分截面被用来获得相应的附着率在一个广泛的温度范围内的电子。计算结果明确表明，经常采用的参数化形式，这样的速率产生了广泛的值，原来是特定的每个分子物种考虑，从而排除使用一个独特的一套为整个类的多炔。
英文摘要：
The formation of anionic species in the interstellar medium from interaction of linear molecules containing carbon, nitrogen and hydrogen as atomic components (polyynes) with free electrons in the environment is modelled via a quantum treatment of the collision dynamics. The ensuing integral cross sections are employed to obtain the corresponding attachment rates over a broad range of temperatures for the electrons. The calculations unequivocally show that a parametrization form often employed for such rates yields a broad range of values that turn out to be specific for each molecular species considered, thus excluding using a unique set for the whole class of polyynes.
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