Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules
Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules
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亚稳态反质子氦原子与氘分子碰撞时的淬灭
DOI：
10.1140/epjd/e20020046
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
T. Yamazaki
中科院分区：
文献类型：
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作者：
B. Juhász;J. Eades;R. Hayano;M. Hori;D. Horvath;T. Ishikawa;J. Sakaguchi;H. Torii;E. Widmann;H. Yamaguchi;T. Yamazaki
在欧洲核子研究中心（CERN）新的反质子减速器装置上，用激光光谱学研究了亚稳态反质子氦原子与氘分子碰撞时的猝灭。从使用“氘辅助逆共振”（DAIR）方法观察到的态的衰变率确定了态（n，l）=（39，36），（39，37）和（39，38）的猝灭截面。结果表明，在氢的情况下，类似的（n，l）的淬火截面的依赖性，但值较小的一个因素的1.5倍。
Quenching of metastable antiprotonic helium atoms in collisions with deuterium molecules has been studied using laser spectroscopy at CERN's new Antiproton Decelerator facility. The quenching cross-sections of the states (n,l)= (39, 36), (39, 37), and (39, 38) were determined from the decay rates of the states which were observed using the “deuterium-assisted inverse resonance” (DAIR) method. The results revealed a similar (n,l)-dependence of the quenching cross-sections as in the case of hydrogen but the values were smaller by a factor of ∼1.5.