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| MOCO-C01 |
The Bio-Nano-ECRIS Project: A New ECR Ion Source at Toyo University to Produce Endohedral Fullerenes
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- T. Uchida, H. Minezaki, Y. Yoshida
Toyo University, Kawagoe-shi, Saitama
- T. Asaji, K. Tanaka
Tateyama Machine Co. Ltd., Toyama-shi
- S. Biri
ATOMKI, Debrecen
- Y. Kato
Osaka University, Suita
- A. Kitagawa, M. Muramatsu
NIRS, Chiba-shi
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We are developing a new ECRIS for the synthesis of endohedral fullerenes, which have potential in medical care, biotechnology, and nanotechnology. So this ion source is temporarily called Bio-Nano ECRIS. Iron-encapsulated fullerene can be applied as a contrast material for magnetic resonance imaging. Thus, we aim the production of Fe@Cnn using the Bio-Nano ECRIS. It has been reported that ions of fullerenes and carbons-loss fullerenes, such as (C60)+, (C58)+, …, are easily produced in ECRISs. Such carbons-loss fullerenes might have an advantage for the mass production of endohedral metallofullerenes because of their less stability. The Bio-Nano ECRIS is designed for the mass production of endohedral fullerenes. A fullerenes sublimation oven and a large-diameter (φ=140mm) chamber are equipped. In a second phase an iron oven will be also installed to make iron-fullerene plasma. In this paper, the recent results will be presented; i) a design concept of the Bio-Nano ECRIS, ii) a preliminary study on the production of fullerene ions and carbons-loss fullerenes with the assistance of base gas plasmas, iii) interactions between the fullerenes plasma and the base gas plasma.
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| MOCO-C02 |
Experiments with Highly Charged Ions at the Paris ECR Ion Source, SIMPA
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32 |
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- C. I. Szabo, D. Attia, A. Gumberidze, P. Indelicato, E.-O. Le Bigot, S. Schlesser
LKB, PARIS
- E. Lamour, J. Merot, C. Prignet, J.-P. Rozet, M. Trassinelli, D. Vernhet
INSP, PARIS
- S. J.C. do Carmo
Coimbra University, Coimbra
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Funding: This work is financed by ANR contract # ANR-06-|B|L|A|N|-|0|2|3|3 SIMSI2-SIMPA.
The full permanent magnet "supernanogan" type ECR (electron cyclotron resonance) ion source, SIMPA (Source d'Ions Multicharges de Paris) has been jointly operated by LKB (Laboratoire Kastler Brossel) and INSP (Institut des NanoSciences de Paris) since 2004. Since this time numerous projects have been started to use the extracted beam in atomic physics and surface physics experiments and the x-ray radiation of the ECR plasma for plasma and atomic physics investigations. In this paper recent achievements will be reported that include the first use of an electrostatic ion trap * for trapping highly charged ions on the beam line of an ECR ion source and electron temperature and density measurements with the help of the observation of the bremsstrahlung spectrum of the electrons in the ECR plasma of the source.** Also a new vacuum double crystal spectrometer *** is under construction in our lab that will allow us to measure the very narrow inner shell transitions of highly charged ions produced in the ECR plasma and provide new x-ray standards with this method for the atomic physics community.
* D. Zajfman, O. Heber, et al. Phys. Rev. A 55, R1577 (1997)
** C. Barue, M. Lamoureux, P. Briand, et al. J. Appl. Phys. 76, 2662 (1994)
*** R. D. Deslattes Rev. Sci. Instrum. 38, 616 (1967)
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| MOCO-C03 |
ECRIS on High Voltage Platform for Engineering and Modifications of Materials
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- P. Kumar, D. Kanjilal, P. S. Lakshmy, G. Rodrigues
IUAC, New Delhi
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An all permanent magnet electron cyclotron resonance ion source (ECRIS) along with the associated components like 10GHz UHF transmitter, vacuum pumps, vacuum gauges, vacuum pump controllers, gas handling systems with gas bottles, local command and controls systems, etc are set up on a 200kV platform for providing various ion beams having energy in the range of a few tens of keVs to a few MeVs. The capability of ECRIS in producing multiply charged ions is being used for the engineering and modifications of materials, and for understanding charge transfer processes during collision with molecules and dissociation of molecules. The beam currents available from the first few charge states are mainly used for these studies. The 10 GHz all-permanent-magnet ECR ion source on high voltage platform at IUAC has been in regular operation since 2000 for delivering various ion beams for research in materials science, atomic and molecular physics. The salient features of ECRIS based low energy ion beam facility (LEIBF)[*] at IUAC, operational experience of the ion source for producing some of the special beams and some of the exciting experimental results will be presented.
[*]D. Kanjilal, T. Madhu, G. O. Rodrigues, U. K. Rao, C. P. Safvan and A. Roy, Ind. J. of Pure and Appl. Phys. 25 (2001) 39
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| MOCO-C04 |
Application of the ATOMKI-ECRIS for Materials Research and Prospects of the Medical Utilization
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- S. Biri, I. Ivan, Z. Juhasz, B. Sulik
ATOMKI, Debrecen
- Cs. Hegedüs, S. Kokenyesi, I. Mojzes, J. Palinkas
University Debrecen, Debrecen
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In the ATOMKI ECRIS Laboratory long-term projects were initiated to use heavy ion beams and plasmas for materials research and to explore the possibility of industrial or medical applications of such ions. (1) Based on our earlier experiments with fullerenes and on recent considerable modification of the ATOMKI-ECRIS a collaboration with Japanese institutes resulted in a new ECR-device to produce endohedral fullerenes, namely caged Fe in C60. (2) Titanium bio-implants are covered with fullerene ions to form an intermediate layer between the metal and the organic tissues in order to improve the speed and properties of the connection. Bone cells growth experiments are under way. (3) Laser and electron irradiations showed that the structure and properties (volume, refractive index) of certain amorphous thin films can be effectively modified. We extend these investigations using heavy ion beams, focusing on the effect of the ion charge. (4) Highly charged slow ions can fly through nano-capillaries even for a large misalignment of their axis. Such a phenomenon might get a wide range of applications where ions should be directed, focused, deposited and implanted on a nanoscopic scale.
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| MOCO-C05 |
Development of ECR high purity liners for reducing K contamination for AMS studies of 39Ar
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- C. J. Schmitt, M. Bowers, P. Collon, D. Robertson
University of Notre Dame, Notre Dame
- F. Calaprice, C. Galbiati
PU, Princeton, New Jersey
- D. Henderson, C. L. Jiang, R. C. Pardo, E. Rehm, R. H. Scott, R. C. Vondrasek
ANL, Argonne, Illinois
- W. Kutschera
VERA, Wien
- M. Paul
The Hebrew University of Jerusalem, The Racah Institute of Physics, Jerusalem
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The first application of 39Ar AMS at the ATLAS linac of Argonne National Laboratory (ANL) to date ocean water samples relevant to oceanographic studies using the gas-filled magnet technique to separate the 39K-39Ar isobars was most successful and has been reported on. In particular the use of a quartz liner in the plasma chamber of the Electron Cyclotron Resonance (ECR) ion source enabled a 39K reduction of a factor ~100 compared to previous runs without liners and allowed for our current lowest detection limit of 39Ar/Ar = 4.2x10-17. We are currently working on improving the AMS method for 39Ar by following two development paths to allow for higher beam currents while lowering 39K rates. The first option is to modify the design of the quartz liner to provide active water cooling. The second option is to evaporate high purity aluminum directly on the surface of the water-cooled ion source chamber. The overall driving force for AMS is to search for a source of argon that has a low concentration of 39Ar. Such a source of argon would be useful for new liquid argon detectors that are being developed for detecting dark matter WIMPs (Weakly Interacting Massive Particles).
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