Results 31 to 40 of about 309,738 (293)

An Experimental Study of Waveguide Coupled Microwave Heating with Conventional Multicusp Negative Ion Source

, 2015
Negative ion production with conventional multicusp plasma chambers utilizing 2.45 GHz microwave heating is demonstrated. The experimental results were obtained with the multicusp plasma chambers and extraction systems of the RFdriven RADIS ion source ...
Kalvas, T., Koivisto, H., Komppula, J., Laulainen, J., Tarvainen, O.   +4 more
core   +1 more source

Negative Ion Extraction from a Large RF Negative Ion Source [PDF]

Negative Ion Extraction from a Large RF Negative Ion Source
A. Ando, K. Tsumori, O. Kaneko, T. Kuroda, T. Takanashi, Y. Oka, Y. Takeiri   +6 more
core   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

Advanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar, Mohammad Kazemi, Zichang Xiong, Thomas Cameron, Julian Held, Uwe Kortshagen   +5 more
wiley   +1 more source

Kinetics of electrons and neutral particles in radio-frequency transformer coupled plasma H− ion source at Seoul National University

New Journal of Physics, 2016
In volume production H ^− ion sources, control of electron temperature is essential due to its close correlation with the generation of vibrationally-excited hydrogen molecules in the driver region as well as the generation of H ^− ions by dissociative ...
K J Chung, J J Dang, J Y Kim, W H Cho, Y S Hwang   +4 more
doaj   +1 more source

Ion transport in macroscopic RF linear traps

, 2014
Efficient transport of cold atoms or ions is a subject of increasing concern in many experimental applications reaching from quantum information processing to frequency metrology.
Champenois, Caroline, Kamsap, Marius Romuald, Knoop, Martina, Pedregosa-Gutierrez, Jofre   +3 more
core   +3 more sources

RF Plasma source for a Heavy Ion Fusion injector [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005
Abstract We are developing high-current ion sources for Heavy Ion Fusion (HIF) applications. Our proposed RF plasma source starts with an array of high current density mini-beamlets (of a few milliampere each at ∼100 mA/cm 2 ) that are kept separated from each other within a set of acceleration grids. After they have gained sufficient kinetic energy (
Westenskow, G A, Grote, D P, Halaxi, E, Kwan, J W, Waldron, W L   +4 more
openaire   +2 more sources

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Emittance of a Low-Power RF Ion Source with a Micrometer-Scale Extraction Aperture

East European Journal of Physics
The concept of a compact nuclear microprobe is based on specialized ion sources with beam currents not exceeding a few nanoamperes and a small energy spread.
Vitalii I. Voznyi, Aleksandr G. Ponomarev, Dmytro V. Mahilin, Dmytro P. Shulha, Volodymyr A. Rebrov   +4 more
doaj   +1 more source

Towards large and powerful radio frequency driven negative ion sources for fusion

New Journal of Physics, 2017
The ITER neutral beam system will be equipped with radio-frequency (RF) negative ion sources, based on the IPP Garching prototype source design. Up to 100 kW at 1 MHz is coupled to the RF driver, out of which the plasma expands into the main source ...
B Heinemann, U Fantz, W Kraus, L Schiesko, C Wimmer, D Wünderlich, F Bonomo, M Fröschle, R Nocentini, R Riedl   +9 more
doaj   +1 more source

Development of the RF Ion Sources for Focused Ion Beam Accelerators [PDF]

, 2013
The paper presents the results of investigations of ion sources developed in the IAP of NAS of Ukraine for generation of high brightness ion beams with small energy spread.
Miroshnichenko, V., Mordyk, S., Shulha, D., Storizhko, V., Tokman, V., Voznyi, V.   +5 more
core   +1 more source