On the energy dependence of the very low energy reflectance from clean and manganese-doped MgO(100) surfaces

1986 ◽  
Vol 133 (2) ◽  
pp. 687-691 ◽  
Author(s):  
Jian-Wei He ◽  
P. J. Møller
Keyword(s):  
Energy Dependence ◽  
Low Energy

scholarly journals Sputtering of silicon nanopowders by an argon cluster ion beam

2019 ◽  
Vol 10 ◽  
pp. 135-143 ◽  
Author(s):  
Xiaomei Zeng ◽  
Vasiliy Pelenovich ◽  
Zhenguo Wang ◽  
Wenbin Zuo ◽  
Sergey Belykh ◽  
...  
Keyword(s):  
Energy Dependence ◽  
Ion Beam ◽  
Finite Size ◽  
Low Energy ◽  
Finite Size Effect ◽  
Target Density ◽  
Cluster Ion ◽  
Sputtering Yield ◽  
Beam Parameters ◽  
Silicon Nanopowders

In this work an Ar+ cluster ion beam with energy in the range of 10–70 keV and dose of 7.2 × 1014–2.3 × 1016 cluster/cm2 was used to irradiate pressed Si nanopowder targets consisting of particles with a mean diameter of 60 nm. The influence of the target density and the cluster ion beam parameters (energy and dose) on the sputtering depth and sputtering yield was studied. The sputtering yield was found to decrease with increasing dose and target density. The energy dependence demonstrated an unusual non-monotonic behavior. At 17.3 keV a maximum of the sputtering yield was observed, which was more than forty times higher than that of the bulk Si. The surface roughness at low energy demonstrates a similar energy dependence with a maximum near 17 keV. The dose and energy dependence of the sputtering yield was explained by the competition of the finite size effect and the effect of debris formation.

ELASTIC WEAK P-P ASYMMETRY AND SHORT RANGE INTERACTIONS

1988 ◽  
Vol 03 (09) ◽  
pp. 877-882 ◽  
Author(s):  
LEONARD S. KISSLINGER
Keyword(s):  
Nuclear Structure ◽  
Energy Dependence ◽  
Short Range ◽  
Low Energy ◽  
Proton Proton ◽  
Elastic Proton ◽  
Conventional Models ◽  
Hadron Model

The energy dependence of the low-energy weak elastic proton-proton asymmetry in the Hybrid Quark Hadron model is opposite to that in conventional hadronic models. This can provide a test for quark cluster vs conventional models of short-range nuclear structure and reactions.

Sign in / Sign up

Export Citation Format

Share Document