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Title: Improved efficiency and precise temperature control of low-frequency induction-heating pure iron vapor source on ECR ion source

Abstract

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 heatingmore » 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 Degree-Sign 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.« less

Authors:
; ; ; ; ; ; ; ; ; ; ;  [1];  [2];  [3];  [3]
  1. Osaka Univ., 2-1 Yamadaoka, Suita, Osaka, 565-0871 (Japan)
  2. (NIRS), 4-9-1 Anagawa, Inage, Chiba, 263-8555 (Japan)
  3. (Japan)
Publication Date:
OSTI Identifier:
22075730
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1496; Journal Issue: 1; Conference: 19. international conference on ion implantation technology, Valladolid (Spain), 25-29 Jun 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; CELL CULTURES; ECR ION SOURCES; FULLERENES; HEATING; IN VIVO; IRON IONS; MELTING POINTS; MOLYBDENUM; MULTICHARGED IONS; PLASMA; RF SYSTEMS; TEMPERATURE CONTROL; TRANSFORMERS; VAPOR PRESSURE

Citation Formats

Kato, Y., Takenaka, T., Yano, K., Kiriyama, R., Kurisu, Y., Nozaki, D., Muramatsu, M., Kitagawa, A., Uchida, T., Yoshida, Y., Sato, F., Iida, T., National Institute of Radiological Science, Bio-Nano Electronics Research Centre, Toyo Univ., 2100 Kuzirai, Kawagoe, Saitama, 350-8585, and Osaka Univ., 2-1 Yamadaoka, Suita, Osaka, 565-0871. Improved efficiency and precise temperature control of low-frequency induction-heating pure iron vapor source on ECR ion source. United States: N. p., 2012. Web. doi:10.1063/1.4766580.
Kato, Y., Takenaka, T., Yano, K., Kiriyama, R., Kurisu, Y., Nozaki, D., Muramatsu, M., Kitagawa, A., Uchida, T., Yoshida, Y., Sato, F., Iida, T., National Institute of Radiological Science, Bio-Nano Electronics Research Centre, Toyo Univ., 2100 Kuzirai, Kawagoe, Saitama, 350-8585, & Osaka Univ., 2-1 Yamadaoka, Suita, Osaka, 565-0871. Improved efficiency and precise temperature control of low-frequency induction-heating pure iron vapor source on ECR ion source. United States. doi:10.1063/1.4766580.
Kato, Y., Takenaka, T., Yano, K., Kiriyama, R., Kurisu, Y., Nozaki, D., Muramatsu, M., Kitagawa, A., Uchida, T., Yoshida, Y., Sato, F., Iida, T., National Institute of Radiological Science, Bio-Nano Electronics Research Centre, Toyo Univ., 2100 Kuzirai, Kawagoe, Saitama, 350-8585, and Osaka Univ., 2-1 Yamadaoka, Suita, Osaka, 565-0871. Tue . "Improved efficiency and precise temperature control of low-frequency induction-heating pure iron vapor source on ECR ion source". United States. doi:10.1063/1.4766580.
@article{osti_22075730,
title = {Improved efficiency and precise temperature control of low-frequency induction-heating pure iron vapor source on ECR ion source},
author = {Kato, Y. and Takenaka, T. and Yano, K. and Kiriyama, R. and Kurisu, Y. and Nozaki, D. and Muramatsu, M. and Kitagawa, A. and Uchida, T. and Yoshida, Y. and Sato, F. and Iida, T. and National Institute of Radiological Science and Bio-Nano Electronics Research Centre, Toyo Univ., 2100 Kuzirai, Kawagoe, Saitama, 350-8585 and Osaka Univ., 2-1 Yamadaoka, Suita, Osaka, 565-0871},
abstractNote = {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 Degree-Sign 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.},
doi = {10.1063/1.4766580},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1496,
place = {United States},
year = {2012},
month = {11}
}