scholarly journals Resonance refraction and neutrino oscillations

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Alexei Y. Smirnov ◽  
Victor B. Valera
Keyword(s):  
Energy Dependence ◽  
Laboratory Experiments ◽  
Resonance Region ◽  
Refraction Index ◽  
Neutrino Energy ◽  
Low Energy ◽  
Oscillation Probability ◽  
Resonance Character ◽  
New Interactions ◽  
Region Ii

Abstract The refraction index and matter potential depend on neutrino energy and this dependence has a resonance character associated to the production of the mediator in the s−channel. For light mediators and light particles of medium (background) the resonance can be realized at energies accessible to laboratory experiments. We study properties of the energy dependence of the potential for different C-asymmetries of background. Interplay of the background potential and the vacuum term leads to (i) bump in the oscillation probability in the resonance region, (ii) dip related to the MSW resonance in the background, (iii) substantial deviation of the effective ∆m2 above the resonance from the low energy value, etc. We considered generation of mixing in the background. Interactions with background shifts the energy of usual MSW resonance and produces new MSW resonances. Searches of the background effects allow us to put bounds on new interactions of neutrinos and properties of the background. We show that explanation of the MiniBooNE excess, as the bump due to resonance refraction, is excluded.

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.

Natural gas anodes for aluminium electrolysis in molten fluorides

2016 ◽  
Vol 190 ◽  
pp. 71-84 ◽  
Author(s):  
Geir Martin Haarberg ◽  
Babak Khalaghi ◽  
Tommy Mokkelbost
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Laboratory Experiments ◽  
Low Energy ◽  
Anode Potential ◽  
Carbon Consumption ◽  
Molten Salt Electrolysis ◽  
Anode Carbon ◽  
Molten Fluorides ◽  
Carbon Anodes

Industrial primary production of aluminium has been developed and improved over more than 100 years. The molten salt electrolysis process is still suffering from low energy efficiency and considerable emissions of greenhouse gases (CO2 and PFC). A new concept has been suggested where methane is supplied through the anode so that the CO2 emissions may be reduced significantly, the PFC emissions may be eliminated and the energy consumption may decrease significantly. Porous carbon anodes made from different graphite grades were studied in controlled laboratory experiments. The anode potential, the anode carbon consumption and the level of HF gas above the electrolyte were measured during electrolysis. In some cases it was found that the methane oxidation was effectively participating in the anode process.

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.

Raman Spectra of Carbon Dioxide and its Isotopic Variants in the Fermi Resonance Region: II. 12C18O2

1978 ◽  
Vol 32 (4) ◽  
pp. 401-402 ◽  
Author(s):  
H. W. Klöckner ◽  
H. Finsterhölzl ◽  
K. Srinivasan ◽  
H. W. Schrötter
Keyword(s):  
Carbon Dioxide ◽  
Raman Spectra ◽  
Resonance Region ◽  
Fermi Resonance ◽  
Region Ii
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