Spontaneous Emission of Positronium Negative Ions from Tungsten (100) Surface

摘要：

Recently, we have observed spontaneous emission of positronium negative ions from polycrystalline tungsten surface. In the present work, we have extended the study to the emission from tungsten single crystal. The emission from tungsten (100) surface plane has been confirmed. The fraction of positrons yielding the ions at the target surface was (1.2±0.2)×10-4.

关键词： positronium negative ion tungsten single crystal work function

作者: Yasuyuki Nagashim Toshihide Hakodate Ayaka Miyamoto Koji Michishio

作者单位: Department of Physics,Tokyo University of Science 1-3 Kagurazaka,Shinjuku-ku,Tokyo 162-8601,Japan

会议类型: 国际会议

会议名称: 第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)

会议地点: 武汉

会议语种:英文

页码: 161-165

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）