Stopping and straggling of H and He in ZnO
Stopping and straggling of H and He in ZnO
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DOI：
10.1140/epjd/e2016-70179-4
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
R. Fadanelli;C. D. Nascimento;C. C. Montanari-C.;Julio C. Aguiar;D. Mitnik;A. Turos;E. Guziewicz;M. Behar
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文献类型：
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作者：
R. Fadanelli;C. D. Nascimento;C. C. Montanari-C.;Julio C. Aguiar;D. Mitnik;A. Turos;E. Guziewicz;M. Behar
摘要本文给出了氧化锌中H和He离子能量损失的平均值（单位路径长度停止）和均方值（能量损失离散）的实验值和理论值。利用卢瑟福后向散射技术对（300-2000）keV H离子和（300-5000）keV He离子进行了测量。目前的实验数据是该氧化物中第一组停止和散列值。结合密度泛函理论对ZnO晶体固体的分子描述，鼓励了理论研究。利用层位局部等离子体近似（SLPA）计算了H和He离子在不同电荷状态下的能量损失。分子与布拉格规则的描述也进行了讨论。基于目前的停止测量，分析了氧化锌内部He的平衡电荷态，提出了半经验电荷态分布。目前的实验值和理论值表明，停止和散列都符合得很好。我们还将我们的数据与SRIM2013和CasP5.2值进行了比较。图形抽象
AbstractWe present experimental and theoretical values for the energy loss of H and He ions in Zinc oxide, in mean value (stopping per unit path length) and mean square value (energy loss straggling). The measurements were carried out using the Rutherford Backscattering technique for (300–2000) keV H ions and (300–5000) keV He ions. Present experimental data are the first set of stopping and straggling values in this oxide. The theoretical research was encouraged considering the molecular description of ZnO as crystal solid using the density functional theory. The energy loss calculations for H and He ions with different charge states were performed with the shelwise local plasma approximation (SLPA). The molecular versus the Bragg-rule description is also discussed. The equilibrium charge state of He inside ZnO is analyzed based on the present stopping measurements, and a semiempirical charge state distribution is proposed. Present experimental and theoretical values show good agreement for both the stopping and the straggling. We also compare our data with the SRIM2013 and with CasP5.2 values.Graphical abstract