Results 41 to 50 of about 43,662 (259)

Overcoming High Energy Backgrounds at Pulsed Spallation Sources

, 2014
Instrument backgrounds at neutron scattering facilities directly affect the quality and the efficiency of the scientific measurements that users perform.
Ansell, Stuart,, Bentley, Phillip M.,, Cherkashyna, Nataliia, Cooper-Jensen, Carsten P, DiJulio, Douglas D, Ehlers, Georg,, Extegarai, Maddi,, Filges, Uwe,, Fissum, Kevin, Gallmeier, Franz X.,, Hall-Wilton, Richard J, Iverson, Erik B,, Kanaki, Kalliopi, Khaplanov, Anton, Kirstein, Oliver, Kittelmann, Thomas,, Lund University., Panzner, Tobias,, Pfeiffer, Dorothea, Rantsiou, Emmanouela,, Santoro, Valentina,, Scherzinger, Julius   +21 more
core   +1 more source

A New Solid Deuterium Source of Ultra-Cold Neutrons [PDF]

, 2000
In polarized neutron decay, the angular correlation between the neutron spin and the direction of emission of the electron is characterized by the coefficient A.
Bowles, T., Filippone, B. W., Geltenbort, P., Hill, R., Hoedl, S., Hogan, G., Ito, T. M., Lamoreaux, S., Liu, C.-Y., Marek, L., Morris, C. L., Saunders, A., Seestrom, S., Smith, D. A., Teasdale, W., Young, A., Yuan, J.   +16 more
core   +1 more source

Coupling mechanism of seepage and coal and rock mass destruction during coal and gas outburst

Meitan kexue jishu
In response to the unclear mechanism of coal and gas outburst, the mechanical action mechanism of gas seepage on coal body damage and coal and gas outburst in working face was studied.The concept of gas permeability as a cohesive force is introduced from
Shiling ZHANG, Junfei CUI, Shudong HE
doaj   +1 more source

Lithium-Beryllium-Boron and Oxygen in the early Galaxy [PDF]

, 2000
Oxygen is a much better evolutionary index than iron to follow the history of Lithium-Beryllium-Boron (LiBeB) since it is the main producer of these light elements at least in the early Galaxy.
Casse, Michel, Vangioni-Flam, Elisabeth
core   +6 more sources

A MCNP simulation study of neutronic calculations of spallation targets [PDF]

Nuclear Technology and Radiation Protection, 2013
The accelerator driven system is an innovative reactor which is being considered as a dedicated high-level waste burner. The function of the spallation target in accelerator driven system is to convert the incident high-energy particle beam to low ...
Feghhi Seyed Amir Hossein, Gholamzadeh Zohreh   +1 more
doaj   +1 more source

Transforming Grain-Boundary Brittle Precipitates to Ductility Pathways in Complex Concentrated Alloy. [PDF]

Adv Sci (Weinh)
By engineering graded BCC/L12 interfaces, brittle precipitates in a complex concentrated alloy enable sequential deformation, realizing gigapascal strength with >20% elongation to solve the strength‐ductility trade‐off. ABSTRACT Conventional wisdom holds that hard grain‐boundary (GB) precipitates embrittle structural alloys by acting as crack ...
Li Z, Li XT, Chen Z, Geng Y, Gong H, Hu S, Song W, Xia W, Li C, Peng L, Fan Y, Guan P, Zhang B, Wang W, Yang Y.   +14 more
europepmc   +2 more sources

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A

, 2011
Titanium-rich subluminous supernovae are rare and challenge current SN nucleosynthesis models. We present a model in which ejecta from a standard Supernova is impacted by a second explosion of the neutron star (a Quark-nova), resulting in spallation ...
A. F. Iyudin, Amir Ouyed, Denis Leahy, M. Heil, Prashanth Jaikumar, Rachid Ouyed   +5 more
core   +1 more source

Evolution of Li, Be and B in the Galaxy [PDF]

, 2001
In this paper we study the production of Li, Be and B nuclei by Galactic cosmic ray spallation processes. We include three kinds of processes: (i) spallation by light cosmic rays impinging on interstellar CNO nuclei (direct processes); (ii) spallation by
Bonifacio P., Chmielewski Y., Daniele Galli, Dodds D., Federico Ferrini, Giada Valle, Goldstein M. L., Hanon P., Ip W. H., Lemoine M., Meneguzzi M., Meyer J.-P., Mitler H. E., Primas F., Primas F., Primas F., Sandage A., Shore S. N., Steven N. Shore, Tinsley B. M., Vangioni-Flam E.   +20 more
core   +2 more sources

Pulsed spallation neutron sources [PDF]

Physics Today, 1979
The discovery of the neutron in 1932, which indirectly led to the potentially catastrophic development of nuclear weapons on the one hand and to the beneficial development of nuclear-generated electricity on the other, has had another, less well-known, but scientifically important consequence: the provision of a uniquely sensitive and pervasive tool ...
John M. Carpenter, Thomas H. Blewitt, David L. Price, Samuel A. Werner   +3 more
openaire   +1 more source