Scattering of keV protons from copper surfaces

1968 ◽  
Vol 46 (6) ◽  
pp. 527-535 ◽  
Author(s):  
R. Behrisch
Keyword(s):  
Single Crystal ◽  
Copper Single Crystal ◽  
Angular Distributions ◽  
Hydrogen Atoms ◽  
Copper Surfaces ◽  
Energy And Angular Distributions

For protons of 40 to 120 keV energy impinging on the surface of a copper single crystal, the energy and angular distributions of the backscattered hydrogen atoms were measured, especially in and around the [Formula: see text] direction.

Surface studies of single copper crystals by REM

1989 ◽  
Vol 47 ◽  
pp. 540-541
Author(s):  
Nan Yao
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Chemical Properties ◽  
Surface Preparation ◽  
High Energy ◽  
Copper Single Crystal ◽  
Preparation Technique ◽  
Surface Studies ◽  
Copper Surfaces ◽  
Electron Microscopes

In the last decade, the use of transmission electron microscopes for surface imaging in the reflection mode has been shown to have considerable potential as a means for studying surfaces. Many REM (Reflection Electron Microscopy) studies have been done as reviewed recently by Cowley and Yagi. However, due to the lack of success with clean and flat single-crystal surface preparation technique, the surface studies of less inert metals, such as copper single crystal, have not been reported. The normal method of forming spherical platinum or gold single crystal by simply melting the end of platinum or gold thin wire with an acetylene-oxygen flame in air for REM observation is difficult here. The formation of flat copper surfaces occurs during the well-controlled crystallization process and is sensitively influenced by its physical and chemical properties. This paper reports a new method of overcoming these difficulties in the copper single crystal preparation. Observations of the samples have been made by REM and RHEED (Reflection High Energy Elecrton Diffraction).

The first proof of protonated anion tetrahedra in the tsumcorite-type compounds

2004 ◽  
Vol 68 (5) ◽  
pp. 757-767 ◽  
Author(s):  
T. Mihajlović ◽  
H. Effenberger
Keyword(s):  
Crystal Structure ◽  
Hydrothermal Synthesis ◽  
Single Crystal ◽  
Diffraction Data ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Hydrogen Atoms ◽  
Synthetic Compounds ◽  
X Ray

AbstractHydrothermal synthesis produced the new compound SrCo2(AsO4)(AsO3OH)(OH)(H2O). The compound belongs to the tsumcorite group (natural and synthetic compounds with the general formula M(1)M(2)2(XO4)2(H2O,OH)2; M(1)1+,2+,3+ = Na, K, Rb, Ag, NH4, Ca, Pb, Bi, Tl; M(2)2+,3+ = Al, Mn3+, Fe3+, Co, Ni, Cu, Zn; and X5+,6+ = P, As, V, S, Se, Mo). It represents (1) the first Sr member, (2) the until now unknown [7]-coordination for the M(1) position, (3) the first proof of (partially) protonated arsenate groups in this group of compounds, and (4) a new structure variant.The crystal structure of the title compound was determined using single-crystal X-ray diffraction data. The compound is monoclinic, space group P21/a, with a = 9.139(2), b = 12.829(3), c = 7.522(2) Å, β = 114.33(3)°, V = 803.6(3) Å3, Z = 4 [wR2 = 0.065 for 3530 unique reflections]. The hydrogen atoms were located experimentally.

The interaction of atomic particles with solid surfaces at intermediate energies IV. The energy and angular distributions of particles scattered with electric charge from polycrystalline platinum at bombarding energies of 500-5000 eV

1974 ◽  
Vol 341 (1625) ◽  
pp. 213-231 ◽  
Keyword(s):  
Charged Particles ◽  
Solid Surfaces ◽  
Hydrogen Ion ◽  
Angular Distributions ◽  
Sodium Potassium ◽  
Intermediate Energies ◽  
Polycrystalline Platinum ◽  
Composite Spectra ◽  
Energy And Angular Distributions ◽  
Bombarding Energy

The distributions in angle and energy for charged particles emitted from polycrystalline platinum bombarded with ions of hydrogen, sodium, potassium and some hydrocarbons, have been measured, in continuation of previous work (Cawthron, Cotterell & Oliphant 1969 a , b , parts I and II; 1970, part III) to lower energies. Composite spectra are presented, including ions of both signs. The flux of emitted charged particles, under hydrogen ion bombardment, is shown to contain approximately equal numbers of protons and H¯ ions, except at the lowest bombarding energies, where the latter apparently predominate. Scattering in all cases is shown to increase with bombarding energy over the range covered, the increase being near linear for hydrogen and very rapid for alkalimetal ions. In all cases the total emission of charged particles is very small at the lowest bombarding energies employed.

scholarly journals Energy and angular distributions of electrons from ion impact on atomic and molecular hydrogen. IV. 28–114-keVHe++ H collisions

1996 ◽  
Vol 53 (1) ◽  
pp. 303-311 ◽  
Author(s):  
Y.-Y. Hsu ◽  
M. W. Gealy ◽  
G. W. Kerby ◽  
M. E. Rudd ◽  
D. R. Schultz ◽  
...  
Keyword(s):  
Molecular Hydrogen ◽  
Angular Distributions ◽  
Ion Impact ◽  
Energy And Angular Distributions
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