Low-energy atomic scattering of ground-state C+(2P) ions by atomic hydrogen: role of non-adiabatic couplings and resonances in elastic and inelastic processes

1987 ◽  
Vol 20 (21) ◽  
pp. 5737-5752 ◽  
Author(s):  
C J Williams ◽  
K F Freed
Keyword(s):  
Ground State ◽  
Atomic Hydrogen ◽  
Low Energy ◽  
Atomic Scattering ◽  
Inelastic Processes

Spin-exchange scattering cross sections for hydrogen atoms at low temperatures

1980 ◽  
Vol 58 (6) ◽  
pp. 881-885 ◽  
Author(s):  
A. J. Berlinsky ◽  
B. Shizgal
Keyword(s):  
Cross Sections ◽  
Low Temperatures ◽  
Atomic Hydrogen ◽  
Spin Exchange ◽  
Low Energy ◽  
Energy Limit ◽  
Hydrogen Atoms ◽  
Exchange Scattering ◽  
Scattering Cross Sections

Calculations are presented of the low energy (0 < E ≤ 10−2 eV) spin exchange and frequency shift cross sections for (H,H) scattering, and of their thermal averages for 0 < T < 10 K. In particular, the behaviour of the cross sections in this low energy limit and the role of resonances due to orbiting collisions is studied in detail. A comparison is made with recent nmr measurements on gaseous atomic hydrogen at liquid helium temperatures. The results of this work suggest further useful experiments at low temperatures.

THE ROLE OF REPULSIVE CORES IN THE PHOTONUCLEAR EFFECT

1961 ◽  
Vol 39 (3) ◽  
pp. 385-392 ◽  
Author(s):  
John W. Clark
Keyword(s):  
Cross Section ◽  
Ground State ◽  
Hard Core ◽  
Low Energy ◽  
Repulsive Core ◽  
Nuclear Forces ◽  
Large Nucleus ◽  
Sum Rule ◽  
Nuclear Ground State

The dipole sum rule is used to investigate the effect of nuclear forces on the integrated photonuclear cross section σint of a large nucleus, for a Serber potential containing a hard core. A Jastrow wave function is assumed to describe the nuclear ground state, and the first term in the cluster expansion of the resultant expression for σint evaluated under two different sets of assumptions for the potential and correlation function, corresponding to two different studies of the nuclear matter problem. The presence of a repulsive core in the potential is found to enhance considerably the calculated σint, compared with the result for a potential without a core which fits the same (low-energy) two-nucleon data.

Microwave excitation of a low-energy atomic hydrogen

2020 ◽  
Vol 29 (1) ◽  
pp. 015005
Author(s):  
Yuji Shimabukuro ◽  
Hidenori Takahashi ◽  
Shinichi Iwamoto ◽  
Koichi Tanaka ◽  
Motoi Wada
Keyword(s):  
Atomic Hydrogen ◽  
Low Energy ◽  
Microwave Excitation

scholarly journals Influence of TOPO and TOPO-CdSe/ZnS Quantum Dots on Luminescence Photodynamics of InP/InAsP/InPHeterostructure Nanowires

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 640
Author(s):  
Artem I. Khrebtov ◽  
Vladimir V. Danilov ◽  
Anastasia S. Kulagina ◽  
Rodion R. Reznik ◽  
Ivan D. Skurlov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Excited States ◽  
Molecular Beam ◽  
Surface Passivation ◽  
Low Energy ◽  
Trioctylphosphine Oxide ◽  
Reverse Transfer ◽  
Semiconductor Heterostructure ◽  
Ligand Type

The passivation influence by ligands coverage with trioctylphosphine oxide (TOPO) and TOPO including colloidal CdSe/ZnS quantum dots (QDs) on optical properties of the semiconductor heterostructure, namely an array of InP nanowires (NWs) with InAsP nanoinsertion grown by Au-assisted molecular beam epitaxy on Si (111) substrates, was investigated. A significant dependence of the photoluminescence (PL) dynamics of the InAsP insertions on the ligand type was shown, which was associated with the changes in the excitation translation channels in the heterostructure. This change was caused by a different interaction of the ligand shells with the surface of InP NWs, which led to the formation of different interfacial low-energy states at the NW-ligand boundary, such as surface-localized antibonding orbitals and hybridized states that were energetically close to the radiating state and participate in the transfer of excitation. It was shown that the quenching of excited states associated with the capture of excitation to interfacial low-energy traps was compensated by the increasing role of the “reverse transfer” mechanism. As a result, the effectiveness of TOPO-CdSe/ZnS QDs as a novel surface passivation coating was demonstrated.

The role of an energy-dependent inner potential in quantitative low-energy electron diffraction

2000 ◽  
Vol 458 (1-3) ◽  
pp. 155-161 ◽  
Author(s):  
S Walter ◽  
V Blum ◽  
L Hammer ◽  
S Müller ◽  
K Heinz ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Low Energy ◽  
Energy Electron ◽  
Low Energy Electron Diffraction ◽  
Low Energy Electron ◽  
Energy Dependent

t+t clustering in He-isotopes

2006 ◽  
Vol 21 (31n33) ◽  
pp. 2499-2502
Author(s):  
S. Aoyama ◽  
N. Itagaki ◽  
K. Arai ◽  
K. Katō ◽  
M. Oi
Keyword(s):  
Configuration Space ◽  
Ground State ◽  
Cluster Component ◽  
Theoretical Approaches ◽  
He Isotopes

t+t clustering in He isotopes is investigated by using two theoretical approaches. A role of the t+t cluster component in the ground state is examined with AMD triple-S, allowing the wider configuration space containing simultaneously the "t+t+valence neutrons" structure and "4 He +valence neutrons" structure. We understand the importance of the t + t component even for the ground state. Further, t + t resonances are investigated with RGM type approach. We obtained many t + t states as resonances near to t + t threshold.

Role of atomic hydrogen diffusion in a hydrogen flame

2007 ◽  
Vol 43 (2) ◽  
pp. 125-131 ◽  
Author(s):  
V. A. Bunev ◽  
V. N. Panfilov ◽  
V. S. Babkin
Keyword(s):  
Atomic Hydrogen ◽  
Hydrogen Diffusion ◽  
Hydrogen Flame
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