中文摘要：

allyl 激进分子被使用悦耳的真空在低压的 premixed 汽油 / 氧 / 氩火焰观察了紫外光电游离团 spectrometry。allyl 激进分子的电离潜力被导出是(8.13 ? 啓 ????? 牡楬杮? 湥楮潳 ?? 柳吗？？

英文摘要：

The allyl radical has been observed in a low-pressure premixed gasoline/oxygen/argon flame by using tunable vacuum ultraviolet photoionization mass spectrometry, The ionization potential of the allyl radical is derived to be （8.13 ±0.02） eV from photoionization efficiency curve, In addition, a high level ab initzo Gaussian-3 （G3） method was used to calculate the energies of tile radical and its cation. The calculated adiabatic ionization potential is 8.18 eV, which is in excellent agreement with the experimental value. The result is helpful for identifying the allyl radical formed from other flames and for understanding the mechanism of soot formation.