【摘要】：為了提出降低陽極層霍爾推進(jìn)器運(yùn)行過程中的磁極刻蝕程度的方案,記錄磁極刻蝕程度在相關(guān)參數(shù)影響下的變化,針對(duì)陽極層霍爾推進(jìn)器的放電電流、電壓、工質(zhì)輸送速率等工作參數(shù)開展實(shí)驗(yàn)研究,定量分析了這些影響因子對(duì)推進(jìn)器磁極刻蝕程度的影響。通過測(cè)量磁極被濺射出的粒子在樣品表面不同位置上的沉積速率,計(jì)算出了推進(jìn)器在不同運(yùn)行條件下,由于磁極刻蝕而產(chǎn)生的濺射粒子數(shù)量和密度。實(shí)驗(yàn)結(jié)果表明,該推進(jìn)器在運(yùn)行過程中,濺射粒子主要集中在羽流中心線附近區(qū)域;隨著放電電壓和電流的增加,濺射粒子的密度顯著上升,并且在以羽流中心線為中心,半徑為4cm的圓面區(qū)域內(nèi),濺射粒子密度上升明顯;降低工質(zhì)輸送速率,在低氣壓、高電壓和小電流的運(yùn)行條件下能夠有效降低推進(jìn)器磁極刻蝕程度,實(shí)驗(yàn)所采用的霍爾推進(jìn)器合適的工作氣壓為0.02~0.025Pa。
[Abstract]:In order to reduce the degree of magnetic pole etching during the operation of the anode layer Hall thruster, the paper records the change of the magnetic pole etching degree under the influence of relevant parameters, aiming at the discharge current and voltage of the anode layer Hall thruster. The influence of these factors on the degree of magnetic pole etching of propeller is analyzed quantitatively. The number and density of sputtering particles produced by magnetic pole etching under different operating conditions were calculated by measuring the deposition rate of the particles sputtering on the surface of the sample. The experimental results show that the sputtering particles mainly concentrate near the center of plume during the operation of the propeller, and the density of the sputtering particles increases significantly with the increase of discharge voltage and current, and is centered on the center line of plume. In the circular area with radius of 4cm, the density of sputtering particles increases obviously, and the working fluid transfer rate is decreased, which can effectively reduce the degree of magnetic pole etching of the propeller under the conditions of low pressure, high voltage and low current. The suitable working pressure of the Hall thruster used in the experiment is 0.02 擄0.025 Pa.
【作者單位】： 核工業(yè)西南物理研究院;
【基金】：國家自然科學(xué)基金(11275063) 四川省應(yīng)用基礎(chǔ)研究項(xiàng)目(2013JY0166)
【分類號(hào)】：V439.2

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