Results 71 to 80 of about 1,178,511 (339)

Emittance preservation in a plasma-wakefield accelerator [PDF]

Nature Communications
Radio-frequency particle accelerators are engines of discovery, powering high-energy physics and photon science, but are also large and expensive due to their limited accelerating fields.
C. Lindstrøm, J. Beinortaitė, J. Björklund Svensson, L. Boulton, J. Chappell, S. Diederichs, B. Foster, J. Garland, P. González Caminal, G. Loisch, F. Peña, S. Schröder, M. Th'evenet, S. Wesch, M. Wing, J. C. Wood, R. D’Arcy, J. Osterhoff   +17 more
semanticscholar   +1 more source

Neutrino Physics with Accelerator Driven Subcritical Reactors [PDF]

, 2015
Accelerator Driven Subcritical System (ADS) reactors are being developed around the world, to produce energy and, at the same time, to provide an efficient way to dispose of and to recycle nuclear waste.
E. Ciuffoli
semanticscholar   +1 more source

Physics of Phase Space Matching for Staging Plasma and Traditional Accelerator Components Using Longitudinally Tailored Plasma Profiles. [PDF]

Physical Review Letters, 2014
Phase space matching between two plasma-based accelerator (PBA) stages and between a PBA and a traditional accelerator component is a critical issue for emittance preservation.
Xinlu Xu, Xinlu Xu, J. Hua, Yang Wu, C. Zhang, Fei Li, Y. Wan, C. Pai, Wei Lu, Wei Lu, W. An, P. Yu, M. Hogan, C. Joshi, W. Mori   +14 more
semanticscholar   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

The Lukewarm Frontier: Some Cosmological Consequences of 'Low Energy' Physics [PDF]

, 2010
In this thesis, we present four projects featuring low characteristic energy scales relative to the scales relevant for supersymmetric dark matter production or inflation. We present a telescope search for decaying relic axions in the 3 − 8 eV mass range.
Grin, Daniel
core   +1 more source

Shell-driven mode evolution in the fission of sub-lead nuclei [PDF]

EPJ Web of Conferences
Systematic measurements and analysis of the heavy-ion fusion-fission of 148,152,154,158Dy, 160,164,168 Yb, and 176,178,180,184,186Pt isotopes are presented, spanning a wide range of neutron-to-proton ratios in the sub-lead region.
Muddam V. S., Buete J., Cook K. J., Hinde D. J., Dasgupta M., Hayles S. L., Lee H., Seabra C. C., Stuchbery J. A., Tran T., Webber M. M.   +10 more
doaj   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

Advanced Computing Tools and Models for Accelerator Physics [PDF]

, 2008
This paper is based on a transcript of my EPAC'08 presentation on advanced computing tools for accelerator physics. Following an introduction I present several examples, provide a history of the development of beam dynamics capabilities, and conclude ...
Ryne, Robert, Ryne, Robert D.
core  

Investigation of excitation energy dependence of fission modes in actinides through transfer-induced fission [PDF]

EPJ Web of Conferences
Nuclear fission outcomes are strongly driven by different shell-stabilized fission modes. The resulting fission fragment properties sensitively depend on the excitation energy and the fissioning nuclide.
Lee H., Cook K. J., Buete J., Hinde D. J., Dasgupta M., Bezzina L. T., Hayles S. L., Lakelin M. K., Seabra C. C., Tran T., Webber M. M.   +10 more
doaj   +1 more source

Compact source of positron beams with small thermal emittance

Physical Review Accelerators and Beams, 2023
We investigate electrostatic traps as a novel source of positron beams for accelerator physics applications. Penning-Malmberg (PM) traps are commonly employed in low-energy antimatter experiments.
Rafi Hessami, Spencer Gessner
doaj   +1 more source