Results 101 to 110 of about 30,961 (212)

Simulations of ion cyclotron emission from highly energetic fusion-born protons in aneutronic deuterium-helium-3 plasmas

Nuclear Fusion
Studies of future aneutronic fusion plasmas, such as those comprising deuterium and helium-3 (D– $^3\mathrm{He}$    $\rightarrow \mathrm{^4He}+p$ ), may not be able to exploit neutron-based diagnostics for direct measurement of fusion reactivity.
T.W. Slade-Harajda, R.O. Dendy, S.C. Chapman   +2 more
doaj   +1 more source

Resonant Cyclotron Scattering and Comptonization in Neutron Star Magnetospheres

, 2005
Resonant cyclotron scattering of the surface radiation in the magnetospheres of neutron stars may considerably modify the emergent spectra and impede efforts to constraint neutron star properties.
Gavriil, Fotis P., Lyutikov, Maxim
core   +1 more source

New interpretation of ion cyclotron emission from a tokamak

Physics of Plasmas
The tempting interpretation of ion cyclotron emission in terms of compressional Alfvén eigenmodes involving energetic ions is inconsistent with recent TCV experimental observations in some important aspects, such as (i) the perturbed poloidal field is exceeding the parallel perturbed magnetic field significantly, and (ii) the modes are near cyclotron ...
B. N. Breizman, M. B. Dreval, S. E. Sharapov   +2 more
openaire   +1 more source

Atmospheres and Spectra of Strongly Magnetized Neutron Stars -- III. Partially Ionized Hydrogen Models

, 2003
We construct partially ionized hydrogen atmosphere models for magnetized neutron stars in radiative equilibrium with surface fields B=10^12-5 \times 10^14 G and effective temperatures T_eff \sim a few \times 10^5-10^6 K.
Alexander Y. Potekhin, Dong Lai, Gilles Chabrier, Gnedin Yu. N., Morii M., Pavlov G. G., Wynn C. G. Ho   +6 more
core   +1 more source

Velocity-space tomography of an MeV fast-ion tail generated by three-ion scheme ICRF heating at JET

Nuclear Fusion
Recently-developed methods are used successfully to reconstruct the two-dimensional velocity-space distribution of the energetic minority MeV ion tail created by heating in the ion cyclotron range of frequencies (ICRFs) in the D–D $ _{\mathrm{NBI}}$ – ^3
B.C.G. Reman, H. Järleblad, Y. Dong, J. Eriksson, M. Nocente, Y. Kazakov, E. Lerche, D. Van Eester, R.O. Dendy, D. Moseev, A. Snicker, M. Rud, B.S. Schmidt, Ž. Štancar, A. Valentini, M. Salewski, JET Contributors   +16 more
doaj   +1 more source

Insight into atmospheres of extrasolar planets through plasma processes

, 2017
Extrasolar planets appear in a chemical diversity unseen in our own solar system. Despite their atmospheres being cold, continuous and transient plasma processes do affect these atmosphere where clouds form with great efficiency.
Helling, Ch., Vorgul, I.
core   +1 more source

Deuterium and tritium density determination at JET using neutron diagnostics

Nuclear Fusion
The fuel ion densities of tritium (T) and deuterium (D) are important parameters for reactor control in fusion experiments. The fuel ion densities typically need to be determined for a wide range of experimental conditions, anywhere between pure ...
B. Vingren, J. Eriksson, S. Conroy, G. Ericsson, A. Hjalmarsson, F. Auriemma, A. Boboc, C. Challis, D. Keeling, D. King, K. Kirov, S. Menmuir, M. Maslov, M. Poradzinski, JET Contributors, the EUROfusion Tokamak Exploitation Team   +15 more
doaj   +1 more source

Influence of ion cyclotron range of frequencies heating on neutron emission rate in HL-3 tokamak

He jishu
BackgroundIon cyclotron range of frequencies (ICRF) heating is one of the most widely used auxiliary heating methods in tokamaks. The HL-3 tokamak plans to equip a 6 MW ICRF heating system to conduct discharge experiments of high-performance plasma ...
YANG Guanming, HAO Guangzhou, LU Lingfeng, DONG Guanqi, HAO Baolong, WANG Shuo   +5 more
doaj   +1 more source

Constance mirror program: Progress and plans [PDF]

, 1981
The current state of the mechanics of the Constance II experiment, the physics results gathered, the motivation background, and future plans for the Constance II experiment are reviewed.
Irby, J. H., Klinkowstein, R. E., Mauel, M. E., Smullin, L. D., Voldman, S. H.   +4 more
core   +1 more source

Initial experience with an 11 MeV self-shielded medical cyclotron on operation and radiation safety

Journal of Medical Physics, 2007
A self-shielded medical cyclotron (11 MeV) was commissioned at our center, to produce positron emitters, namely, 18 F, 15 O, 13 N and 11 C for positron emission tomography (PET) imaging.
Pant G, Senthamizhchelvan S
doaj