Charge exchange of He~+-ions with aluminium surfaces

S. Rund; D. Primetzhofer; S.N. Markin; D. Goebl; P. Bauer

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Charge exchange of He~+-ions with aluminium surfaces

机译：He〜+离子与铝表面的电荷交换

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Charge exchange of ~4He~+ and ~3He~+ ions with surfaces of polycrystalline aluminium and AI(1 1 1) was investigated in the low-energy ion scattering (LEIS) regime. Ion spectra were recorded for primary energies ranging from 280 to 4000 eV by using an electrostatic analyzer (ESA). A very low threshold energy eth for collision induced charge exchange (CI) was deduced from the shape of experimental spectra. Ion fractions P~+ were evaluated. No systematic difference in P~+ was observed for both, the two surfaces investigated and the two different projectiles.

机译：在低能离子散射（LEIS）方案中研究了〜4He〜+和〜3He〜+离子与多晶铝和AI（1 1 1）的电荷交换。使用静电分析仪（ESA）记录了280至4000 eV范围内一次能量的离子光谱。从实验光谱的形状推导出了用于碰撞感应电荷交换（CI）的非常低的阈值能量eth。评估离子分数P〜+。对于研究的两个表面和两个不同的射弹，两者均未观察到P〜+的系统差异。

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来源
《Nuclear Instruments & Methods in Physics Research》 |2011年第11期|p.1171-1174|共4页
作者
S. Rund; D. Primetzhofer; S.N. Markin; D. Goebl; P. Bauer;
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作者单位

Institut filer Experimentalphysik, Abt. Atom - und Oberflaechenphysik, Johannes Kepler Universitaet, Altenbergerstr 69, A-4040 Linz, Austria;

Institut filer Experimentalphysik, Abt. Atom - und Oberflaechenphysik, Johannes Kepler Universitaet, Altenbergerstr 69, A-4040 Linz, Austria;

Institut filer Experimentalphysik, Abt. Atom - und Oberflaechenphysik, Johannes Kepler Universitaet, Altenbergerstr 69, A-4040 Linz, Austria;

Institut filer Experimentalphysik, Abt. Atom - und Oberflaechenphysik, Johannes Kepler Universitaet, Altenbergerstr 69, A-4040 Linz, Austria;

Institut filer Experimentalphysik, Abt. Atom - und Oberflaechenphysik, Johannes Kepler Universitaet, Altenbergerstr 69, A-4040 Linz, Austria;

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正文语种 eng
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关键词
low-energy ion scatte; single crystal; neutralization; al(l 1 1); ion fraction;

机译：低能离子散射单晶中和al（l 1 1）;离子分数;

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Charge exchange of He~+-ions with aluminium surfaces

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