Results 21 to 30 of about 43,911 (270)

New method for determination of temperature in spallation reactions [PDF]

Nuclear Technology and Radiation Protection, 2011
We propose a new method for determination of temperature in spallation events. It is shown that temperature can be determined by applying the friction model of energy dissipation in participant-spectator model of a spallation process.
Jordanov Dragana J., Grabež Bojana S., Subotić Krunoslav M., Nađđerđ Laslo J.   +3 more
doaj   +1 more source

Bayesian inverse uncertainty quantification of the physical model parameters for the spallation neutron source first target station

Results in Physics, 2022
The reliability of the mercury spallation target is mission-critical for the neutron science program of the spallation neutron source at the Oak Ridge National Laboratory.
Majdi I. Radaideh, Lianshan Lin, Hao Jiang, Sarah Cousineau   +3 more
doaj   +1 more source

Laser Driven Compression to Investigate Shock-Induced Melting of Metals

Metals, 2014
High pressure shock compression induces a large temperature increase due to the dissipation within the shock front. Hence, a solid sample subjected to intense shock loading can melt, partially or fully, either on compression or upon release from the ...
Thibaut de Rességuier, Didier Loison, André Dragon, Emilien Lescoute   +3 more
doaj   +1 more source

Experimental study of the thermal reaming of the borehole by axial plasmatron [PDF]

, 2019
Purpose. To study rock spallation dynamics in the process of the borehole thermal reaming and analyze energy consumption of the borehole thermal reaming process by plasma jets of the axial plasmatron. Methods. Field experimental study of rock spallation
Dhunnoo, N, Potapchuk, I, Sekar, M, Voloshyn, O, Yemelianenko, V, Zhevzhyk, O, Zhovtonoha, M   +6 more
core   +1 more source

Left-right loading dependence of shock response of (111)//(112) Cu bicrystals: Deformation and spallation [PDF]

, 2012
We investigate with molecular dynamics the dynamic response of Cu bicrystals with a special asymmetric grain boundary (GB), (111)//(112)〈110〉, and its dependence on the loading directions. Shock loading is applied along the GB normal either from the left
An, Q., Germann, T. C., Goddard, William A., III, Han, W. Z., Luo, S. N., Tonks, D. L.   +5 more
core   +1 more source

Effect of Vacancies on Dynamic Response and Spallation in Single-Crystal Magnesium by Molecular Dynamic Simulation

Metals, 2022
The effect of vacancies on dynamic response and spallation in single-crystal magnesium (Mg) is investigated by nonequilibrium molecular dynamics simulations.
Chenying Jiang, Zhiyong Jian, Shifang Xiao, Xiaofan Li, Kun Wang, Huiqiu Deng, Wangyu Hu   +6 more
doaj   +1 more source

Improved modelling of helium and tritium production for spallation targets [PDF]

, 2009
Reliable predictions of light charged particle production in spallation reactions are important to correctly assess gas production in spallation targets.
A. Boudard, A. Kelić-Heil, Agostini, Alard, Ammon, Bertini, Bertrand, Bogatin, Boudard, Boudard, Broders, Currie, D. Mancusi, Enke, Fireman, Guertin, Hendricks, Herbach, Hilscher, J. Cugnon, J.C. David, Junghans, Le Gentil, Leray, Letourneau, Leya, M.V. Ricciardi, Mashnik, Mashnik, Natowitz, S. Leray, Yariv   +31 more
core   +1 more source

Imaging nanostructure phase transition through ultrafast far-field optical ultramicroscopy

Cell Reports Physical Science, 2021
Summary: Imaging photo-induced ultrafast dynamics of nanostructure phase transition is of great interest to the fields of laser-matter interactions and nanotechnology.
Mohamed ElKabbash, Ranran Fang, Anatoliy Vorobyev, Sohail A. Jalil, Sandeep Chamoli, Billy Lam, Subhash Singh, Chunlei Guo   +7 more
doaj   +1 more source

What can we really learn from positron flux 'anomalies'? [PDF]

, 2010
We present a critical analysis of the observational constraints on, and of the theoretical modeling of, aspects of cosmic ray (CR) generation and propagation in the Galaxy, which are relevant for the interpretation of recent positron and anti-proton ...
Abdo, Adler, Adriani, Adriani, Aharonian, Aharonian, Ahn, Alcaraz, Baltz, Beach, Berezinskii, Binns, Blandford, Blasi, Blasi, Boaz Katz, Bringmann, Chang, Delahaye, Dogiel, Donato, DuVernois, Eli Waxman, Engelmann, Gaisser, Ginzburg, Ginzburg, Jonathan Morag, Jones, Kamae, Kfir Blum, Longair, Maurin, Meade, Mertsch, Moskalenko, Moskalenko, Ptuskin, Schlickeiser, Shaviv, Simon, Strong, Strong, Tan, Tan, Webber, Webber, Zatsepin   +47 more
core   +1 more source

Delayed neutrons measurement at the MEGAPIE target [PDF]

, 2007
In the framework of the Neutronic and Nuclear Assessment Task Group of the MEGAPIE experiment we measured the delayed neutron (DN) flux at the top of the target.
Bokov, Pavel, Dore, Diane, Ledoux, Xavier, Letourneau, Alain, Panebianco, Stefano, Prevost, Aurelien, Ridikas, Danas   +6 more
core   +1 more source