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Endohedral Fullerene is expected to be utilized for such application as quantum computing or magnetic resonance imaging contrast agent, because it has various material characteristics. It is confirmed that multiply charged fullerene ion beams have been produced on the electron cyclotron resonance ion source (ECRIS) at Osaka Univ. However, it is difficult to identify multiply charged fullerene ions because their spectrums overlap single charged dissociatedfullerene ions. Therefore, production of multiply charged fullerene ions can be confirmed by identifying non-overlapped fullerene ions spectrums. The aim of this paper is to product and identify multiply charged fullerene ions in the ECRIS. As a result, multiply charged fullerene ions have been clearly isolated from dissociated ones and then identified them. Furthermore, we report the result of identifying nitrogen-fullerene compounds produced in the ECRIS. [ABSTRACT FROM AUTHOR]

Recently, we reported a fullerene modification using neutral-neutral or neutral-ion collision reactions in the two-chamber configuration of the Bio-Nano electron cyclotron resonance ion source (ECRIS). In our methodology, modified fullerenes can be synthesized in vapor-phase in an ECR plasma, or on a surface of a plasma chamber, and can be characterized by on-line mass spectrometric analysis of the ECRIS beam, or by off-line analyses (e.g. time-of-flight mass spectrometry, liquid chromatography mass spectrometry, etc.). So far, we have successfully synthesized a modified C70 with iron (Fe) and chlorine (Cl) atoms using two individual plasmas; Fe-Cl plasma and C70 plasma. In a subsequent experiment, shown in this study, we investigated the ion/electron density distributions in the plasma chamber by using electrostatic probe method. We correlated these results with the off-line synthesized material investigations and also with plasma electron simulations in order to collect more information on the mechanism of the synthesis process. [ABSTRACT FROM AUTHOR]

A new tandem type source on the basis of electron cyclotron resonance (ECR) plasma has been constructed for producing wide-range mass/charge (m/q) ion beams in Osaka Univ. It is considered to be suitable for synthesizing new molecules using a wide operating range of the proposed ion source. We have already produced and extracted multicharged fullerene ion beams from the second stage using pure C60 vapor source. We are planning to produce endohedral fullerenes in the ECRIS plasma. In the first step, we used gaseous material, i.e. nitrogen and argon. In this paper we describe initial experimental results on the production of nitrogen-fullerene compounds. [ABSTRACT FROM AUTHOR]

Multiply charged ions to be used prospectively are produced from solid pure material in an electron cyclotron resonance ion source (ECRIS). Recently a pure iron source is also required for the production of caged iron ions in the fullerene in order to control cells in vivo in bio-nano science and technology. We adopt directly heating iron rod by induction heating (IH) because it has non-contact with insulated materials which are impurity gas sources. We choose molybdenum wire for the IH coils because it doesn't need water cooling. To improve power efficiency and temperature control, we propose to the new circuit without previously using the serial and parallel dummy coils (SPD) for matching and safety. We made the circuit consisted of inductively coupled coils which are thin-flat and helix shape, and which insulates the IH power source from the evaporator. This coupling coils circuit, i.e. insulated induction heating coil transformer (IHCT), can be move mechanically. The secondary current can be adjusted precisely and continuously. Heating efficiency by using the IHCT is much higher than those of previous experiments by using the SPD, because leakage flux is decreased and matching is improved simultaneously. We are able to adjust the temperature in heating the vapor source around melting point. And then the vapor pressure can be controlled precisely by using the IHCT. We can control ±10K around 1500°C by this method, and also recognize to controlling iron vapor flux experimentally in the extreme low pressures. Now we come into next stage of developing induction heating vapor source for materials with furthermore high temperature melting points above 2000K with the IHCT, and then apply it in our ECRIS. [ABSTRACT FROM AUTHOR]

The 14.5 GHz ECR ion source of the ATOMKI is a stand-alone device producing highly charged ion beams for ion-surface experiments and a variety of low charged plasmas and beams for plasma physics studies and for practical applications. In the past two years we performed plasma diagnostics measurements using Langmuir-probes and X-ray camera. Langmuir-probe results allowed estimating the plasma potential close to the resonance zone. The studying of X-ray pictures of Xe-Ar plasmas helps understanding the gas-mixing phenomena. A mixture plasma of fullerene and ferrocene was generated and FeC60 hybrid molecules were detected in the extracted beam. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]