Results 111 to 120 of about 2,933,444 (411)

Detecting chaos in particle accelerators through the frequency map analysis method

, 2014
The motion of beams in particle accelerators is dominated by a plethora of non-linear effects which can enhance chaotic motion and limit their performance. The application of advanced non-linear dynamics methods for detecting and correcting these effects
Bartolini R., Bartolini R., Bartosik H., Bartosik H., Bazzani A., Berz M., Brüning O. S., Collier P., Courant E. D., Forest E., Forest E., Giovannozzi M., Hagedorn R., Jackson J., Laskar J., Laskar J., Laskar J., Laskar J., Liuzzo S., Moser J., Papaphilippou Y., Papaphilippou Y., Papaphilippou Y., Rossbach J., Schmidt F., Willeke F., Yannis Papaphilippou   +26 more
core   +1 more source

Conceptual design of a nonscaling fixed field alternating gradient accelerator for protons and carbon ions for charged particle therapy [PDF]

, 2013
The conceptual design for a nonscaling fixed field alternating gradient accelerator suitable for charged particle therapy (the use of protons and other light ions to treat some forms of cancer) is ...
Aslaninejad, M., Barlow, R.J., Beard, C.D., Bliss, N., Cobb, J.H., Easton, M.J., Edgecock, R., Fenning, R., Gardner, I.S.K., Hill, M.A., Johnstone, C.J., Jones, B., Jones, T., Kelliher, D.J., Khan, A., Machida, S., McIntosh, P.A., Owen, H.L., Pasternak, J., Pattalwar, S., Peach, K.J., Pozimski, J., Prior, C.R., Rochford, J., Rogers, C.T., Seviour, Rebecca, Sheehy, S. L., Smith, S.L., Strachan, J., Tygier, S., Vojnovic, B., Wilson, P., Witte, H., Yokoi, T.   +33 more
core   +2 more sources

Early metastasis is characterized by Gr1+ cell dysregulation and is inhibited by immunomodulatory nanoparticles

Molecular Oncology, EarlyView.
Breast cancer metastasis is associated with myeloid cell dysregulation and the lung‐specific accumulation of tumor‐supportive Gr1+ cells. Gr1+ cells support metastasis, in part, through a CHI3L1‐mediated mechanism, which can be targeted and inhibited with cargo‐free, polymeric nanoparticles.
Jeffrey A. Ma, Sophia M. Orbach, Kate V. Griffin, Kathryn Kang, Yining Zhang, Rebecca S. Pereles, Ian A. Schrack, Guillermo Escalona, Jacqueline S. Jeruss, Lonnie D. Shea   +9 more
wiley   +1 more source

Synthesis mechanism from graphene quantum dots to carbon nanotubes by ion-sputtering assisted chemical vapor deposition

Discover Nano
We present the first work of the synthesis mechanism from graphene quantum dots (GQDs) to carbon nanotubes (CNTs) by an ion-sputtering assisted chemical vapor deposition.
Jun Mok Ha, Seoung Ho Lee, Daehyeon Park, Young Jun Yoon, In Mok Yang, Junhyeok Seo, Yong Seok Hwang, Chan Young Lee, Jae Kwon Suk, Jun Kue Park, Sunmog Yeo   +10 more
doaj   +1 more source

Particle Acceleration in Shearing Flows: Efficiencies and Limits [PDF]

, 2019
We examine limits to the efficiency for particles acceleration in shearing flows, showing that relativistic flow speeds are required for efficient gradual shear acceleration. We estimate maximum achievable particle energies for parameters applicable to relativistic AGN jets. The implications of our estimates is that if large-scale jets are relativistic,
arxiv   +1 more source

A Symplectic Multi-Particle Tracking Model for Self-Consistent Space-Charge Simulation

, 2016
Symplectic tracking is important in accelerator beam dynamics simulation. So far, to the best of our knowledge, there is no self-consistent symplectic space-charge tracking model available in the accelerator community.
Qiang, Ji
core   +2 more sources

Linear acceleration emission in pulsar magnetospheres

, 2010
(abbrev.) Linear acceleration emission occurs when a charged particle is accelerated parallel to its velocity. We evaluate the spectral and angular distribution of this radiation for several special cases, including constant acceleration (hyperbolic ...
Abdo, Abramowitz, Akhiezer, B. Reville, Cheng, de Jager, Ginzburg, Harding, J. G. Kirk, Kirk, Kirk, Kuijpers, Levinson, Medvedev, Melrose, Melrose, Muslimov, Muslimov, Profumo, Rowe, Schott, Schwinger, Timokhin, Watson   +23 more
core   +1 more source

Particle Acceleration in the Heliosphere [PDF]

Highlights of Astronomy, 1995
The heliosphere could be divided in three major acceleration Laboratories, the solar surface (Laboratory 1), the interplanetary medium (Laboratory 2) and Earth and Planetary magnetospheres (Laboratory 3). Our understanding of the acceleration process depends strongly on the nature of the drivers and the energy dissipation process.
openaire   +1 more source

Particle Acceleration at Interplanetary Shocks [PDF]

Space Science Reviews, 2007
This paper briefly reviews proton acceleration at interplanetary shocks. This is key to describing the acceleration of heavy ions at interplanetary shocks because wave excitation—and hence particle scattering—at oblique shocks is controlled by the protons and not the heavy ions.
Zank, G. P., Li, Gang, Verkhoglyadova, Olga   +2 more
openaire   +3 more sources

Charged Particle Acceleration

, 1993
Accelerator physics is primarily the study of the interaction of charged particles with electromagnetic fields. In previous chapters we have concentrated the discussion on the interaction of transverse electrical and magnetic fields with charged particles and have derived appropriate formalisms to apply this interaction to the design of beam transport ...
openaire   +2 more sources