Zobrazeno 1 - 10
of 754
pro vyhledávání: '"Tarvainen, O"'
Autor:
Wang, X., Li, J. B., Mironov, V., Guo, J. W., Zhang, X. Z., Tarvainen, O., Feng, Y. C., Li, L. X., Ma, J. D., Zhang, Z. H., Lu, W., Bogomolov, S., Sun, L., Zhao, H. W.
Intense highly charged ion beam production is essential for high-power heavy ion accelerators. A novel movable Vlasov launcher for superconducting high charge state Electron Cyclotron Resonance (ECR) ion source has been devised that can affect the mi
Externí odkaz:
http://arxiv.org/abs/2406.13448
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A May 2024 1062
Autor:
Angot, J., Luntinen, M., Kalvas, T., Koivisto, H., Kronholm, R., Maunoury, L., Tarvainen, O., Thuillier, T., Toivanen, V.
A new method for determining plasma parameters from beam current transients resulting from short pulse 1+ injection into a Charge Breeder Electron Cyclotron Resonance Ion Source (CB-ECRIS) has been developed. The proposed method relies on few assumpt
Externí odkaz:
http://arxiv.org/abs/2103.03546
Autor:
Skalyga, V. A., Izotov, I. V., Shalashov, A. G., Gospodchikov, E. D., Kiseleva, E. M., Tarvainen, O., Koivisto, H., Toivanen, V.
Fundamental studies of excitation and non-linear evolution of kinetic instabilities of strongly nonequlibrium hot plasmas confined in open magnetic traps suggest new opportunities for fine-tuning of conventional electron cyclotron resonance (ECR) ion
Externí odkaz:
http://arxiv.org/abs/2011.10416
Autor:
Tarvainen, O., Kronholm, R., Laitinen, M., Reponen, M., Julin, J., Toivanen, V., Napari, M., Marttinen, M., Faircloth, D., Koivisto, H., Sajavaara, T.
The production of negative ions in cesium sputter ion sources is generally considered to be a pure surface process. It has been recently proposed that ion pair production could explain the higher-than-expected beam currents extracted from these ion s
Externí odkaz:
http://arxiv.org/abs/2007.00521
Publikováno v:
JINST 15 P06016 (2020)
This paper presents a simulation study of a permanent magnet electron cyclotron resonance ion source (ECRIS) with a minimum-B quadrupole magnetic field topology. The magnetic field is made to conform to conventional ECRIS with $B_\textrm{min}/B_\text
Externí odkaz:
http://arxiv.org/abs/2004.09917
Autor:
Lapin, R. L., Skalyga, V. A., Izotov, I., Razin, S. V., Shaposhnikov, R. A., Vybin, S. S., Bokhanov, A. F., Kazakov, M. Yu., Tarvainen, O.
Negative hydrogen ion sources are used as injectors into accelerators and drive the neutral beam heating in ITER. Certain processes in low-temperature hydrogen plasmas are accompanied by the emission of vacuum ultraviolet (VUV) emission. Studying the
Externí odkaz:
http://arxiv.org/abs/1912.04673
Autor:
Izotov, I. V., Shalashov, A. G., Skalyga, V. A., Gospodchikov, E. D., Tarvainen, O., Mironov, V. E., Koivisto, H., Kronholm, R., Toivanen, V., Bhaskar, B.
The measurement of the axially lost electron energy distribution escaping from a minimum-B electron cyclotron resonance ion source in the range of 4-800 keV is reported. The experiments have revealed the existence of a hump at 150-300 keV energy, con
Externí odkaz:
http://arxiv.org/abs/1912.04285
Autor:
Shalashov, A. G., Gospodchikov, E. D., Izotov, I. V., Mansfeld, D. A., Skalyga, V. A., Tarvainen, O.
Publikováno v:
Phys. Rev. Lett. 120, 155001 (2018)
We report the first experimental evidence of a controlled transition from the generation of periodic bursts of electromagnetic emission into continuous wave regime of a cyclotron maser formed in magnetically confined non-equilibrium plasmas. The kine
Externí odkaz:
http://arxiv.org/abs/1712.06700
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