17th International Conference on Ion Sources

On the Formation Mechanism of Modified Fullerenes in the Two-Chamber Configuration of the Bio-Nano ECRIS

18 Oct 2017, 16:30

2h 30m

CERN

Poster presentation Applications and related technologies Poster Session 3

Speaker

Takashi Uchida (Toyo University)

Description

Recently, we reported the 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) [1]. In our methodology, modified fullerenes can be synthesised in vapor-phase in an ECR plasma, or on a surface of a plasma chamber, and can be characterised 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 synthesised 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 synthesised material investigations and also with plasma electron simulations in order to collect more information on the mechanism of the synthesis process.

Reference:

[1] T. Uchida et. al., Rev. Sci. Instrum. 87 (2016) 02A720.