First Observation of the Free Pionium Atom in VacuumH.-J Mundinger,K.-P Arnold,M Gladisch, J Hofmann,W Jacobs,H Orth,G. zu Putlitz,J Rosenkranz,W Schäfer,W Schwarz,K. A Woodle,V. W HughesEUROPHYSICS LETTERS(1989)引用 2|浏览4暂无评分关键词bound states,time of flight,monte carlo simulationAI 理解论文溯源树样例生成溯源树,研究论文发展脉络