The effects of enhanced electron and ion pressure perturbations mediated in filamentary structures (blobs) on the densities of neutral atoms and molecules are investigated through a self-consistent dynamical fluid model for plasma and neutral fields. The electron and ion densities and pressures, and the generalized vorticity, are simulated by a 2D drift-fluid model in an edge and scrape-off layer slab domain of a toroidally magnetically confined plasma. The plasma dynamics are coupled with a diffusion model for densities of neutral atoms and molecules. The combined model allows for determining the response of the density of neutrals with various temperatures to blobs. It is found that blobs locally deplete densities of molecules and atoms that do not originate from dissociation of molecules, whereas the density of atoms created by dissociation may increase during blob events. The neutral species, their temperature, and origin should thus be taken into consideration when estimating the effect of blobs on neutral density perturbations when calculating emission rates, e.g. for gas puff imaging.
磁化等离子体中丝状结构（blobs）所介导的增强电子与离子压力扰动对中性原子和分子密度的影响，通过一个自洽的等离子体与中性流体动力学模型进行了研究。电子和离子的密度与压力，以及广义涡度，由环形磁化等离子体边缘及刮削层平板几何中的二维漂移流体模型模拟。等离子体动力学与中性原子和分子的扩散模型相耦合。该组合模型能够确定不同温度的中性粒子密度对blobs的响应。研究发现，blobs会局部消耗分子及非分子解离来源的原子的密度，而由分子解离产生的原子密度在blob事件期间可能增加。因此，在计算发射率（例如用于气体 puff 成像）时，考虑中性粒子的种类、温度及其来源对于评估blobs对中性密度扰动的影响至关重要。