论文标题
具有修订反应方案的甲醇形成化学
Methanol formation chemistry with revised reactions scheme
论文作者
论文摘要
提出的工作的目的是分析氢抽象的实验评估反应对星际晶粒表面对甲醇及其前体对晶粒的化学演化的反应，在冷云的条件下以及在透明云的崩溃中崩溃的情况下，在谷物阶段中。对仿真结果的分析表明，这些反应是晶粒表面上HCO和H2CO的高效破坏通道，并且显着影响几乎所有参与CH3OH形成的分子的丰富性。接下来，与没有氢的表面抽象反应的模型相比，在具有这些反应的模型中，气体中甲醇的最大丰度和晶粒表面上的最大数量降低了2-3个数量级。最后，我们研究了CH2OH和CH3O自由基对甲醇化学的结合能的影响。
The aim of the presented work is to analyze the impact of experimentally evaluated reactions of hydrogen abstraction on surfaces of interstellar grains on the chemical evolution of methanol and its precursors on grains and in the gas phase under conditions of cold dark cloud and during the collapse of the translucent cloud into the dark cloud. Analysis of simulation results shows that those reactions are highly efficient destruction channels for HCO and H2CO on grain surfaces, and significantly impact the abundances of almost all molecules participating in the formation of CH3OH. Next, in models with those reactions maximum abundances of methanol in gas and on grain surface decrease by more than 2-3 orders of magnitude in comparison to models without surface abstraction reactions of hydrogen. Finally, we study the impact of binding energies of CH2OH and CH3O radicals on methanol chemistry.
