Open AccessAn experimental investigation of the cross-section ratios in the collisions of partially stripped Cq+，Oq+(q=1—4)on helium atom at the strong-interaction region
Author(s) -
周春林,
邵剑雄,
陈熙萌,
高志民,
王俊,
孙光智,
席发元,
陈益峰,
陈林,
丁宝卫,
王兴安,
娄凤君,
徐俊奎,
邱玺玉,
王幡,
吕瑛
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.5342
Subject(s) - projectile , atomic physics , physics , cross section (physics) , helium , coincidence , ionization , electron , range (aeronautics) , nuclear physics , tandem accelerator , materials science , ion , quantum mechanics , medicine , alternative medicine , pathology , composite material
We measured the cross-section ratios of helium induced by Cq+ and Oq+ q=1—4 produced by the 2×1.7 MV tandem accelerator of Lanzhou University in the energy range from 20 to 500 keV. We obtained the two-dimensional spectrum by employing coincidence method combined with the MPA-3 data acquisition system. Thus, we obtained the ratios of direct ionization, projectile capture electrons and projectile loss electrons to the total cross-section which are denoted by of Rdirect Rcapture and Rloss in this paper. A qualitative explanation of the competitive relation of the three reaction-channels and the emperical laws of the three reaction channels are separately presented.