Spectra of p-^(11)B Three-Body Sequential Decay Reaction

The angular distributions,excitation functions and absolute cross sections of a parti-cles from p-11B reaction for proton energies from 778 keV to 3389 keV are measured.The PIPS（Passivated Implanted Planar Silicon）and ΔE detector spectrometer is used to distinguish theprotons and α particles based on the fact that proton peak has larger displacement when protonspass through the ΔE detector.Whole spectra of 11B（p,2α）4He subsequential decay via the firstexcited state of 8Be are first measured.The behavior of the cross section is discussed.

甲醇轻烃汽油的理化性能研究

文章提出了一种化工原料制备的清洁燃料,将甲醇、煤制稳定轻烃、溶合剂(MTBE)10%、腐蚀抑制剂2‰、市售92#汽油按体积百分比调和。试验结果表明,溶合剂(MTBE)的添加有助于提高甲醇汽油的辛烷值及各组分的融合性,降低高温气阻的发生概率;腐蚀抑制剂的添加进一步降低了甲醇汽油对车用配件的腐蚀性,改善了甲醇汽油的使用局限性。该甲醇汽油具有优于至少等同于现有汽油的动力性能,没有氮氧化物和硫氧化物的排放,极大地减少碳氧化物的排放。长期使用还可以将汽油机内的积碳清洗干净,也无需对汽车发动机进行任何改造,原料来源丰富,价格低廉,具有优良的经济价值和环保价值。