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石墨的化学腐蚀实验是在ＬＡＳ－２０００二次离子质谱仪的分析室中进行的，入射高能氘离子束单独轰击或和一中和电子束联合轰击石墨以模拟等离子体辐照。石墨样品的温度从３００～１０００Ｋ可调。石墨样品是从进行过氢离子辐照实验的ＳＭＦ－８００石墨第一壁组件上切割下来的，它在氘束轰击下释放的产物（Ｍｅ－１＝２～４４范围内）用四极质谱探头ＳＱ１５６进行原位的分子束质谱分析，得到了在１．３μＡ／３ｋｅＶ氘束轰击下石墨样品释放氘甲烷（ＣＤ４）的温度特性，在７８０Ｋ温区有一个因增强的化学腐蚀而形成的释放高峰。分析研究了氘甲烷的温度特性
Graphite chemical corrosion experiments were carried out in an analysis chamber of a LAS-2000 secondary ion mass spectrometer. High energy deuterium ion beams were impacted individually or in combination with a neutralized electron beam to bombard graphite to simulate plasma irradiation. Graphite sample temperature is adjustable from 300 ~ 1000K. Graphite samples were cut from the SMF-800 graphite first wall assembly subjected to hydrogen ionization experiments. The product of its release under deuterium beam bombardment (in the range of Me-1 = 2 to 44) was measured using a quadrupole mass spectrometer probe SQ156 by in situ molecular beam mass spectrometry, the temperature characteristics of deuterated methane (CD4) released from graphite samples at 1.3 μA / 3 keV deuterium beam bombardment were obtained, with a release peak at 780 K resulting from enhanced chemical etching . The temperature characteristics of deuteromethane were analyzed