Abstract
Temperature fluctuation measurements in a liquid bridge of molten silicon, which shows the Marangoni flow in highly super-critical condition, are performed in a half-zone configuration under microgravity on board a TR-IA-4 rocket and on the ground. In the microgravity experiment, two types of temperature oscillation are observed during the melting process of silicon and in the cylindrical half-zone melt. The former oscillation, which has a frequency of about 0.1 Hz during the melting process, has an antiphase correlation of temperature oscillation measured in thermocouples separated by 90° azimuthal angles. The latter oscillation in the cylindrical liquid bridge has no remarkable frequency; however, it tends to have the antiphase correlation in between thermocouples with 180° azimuthal angles. In the ground experiment, temperature fluctuations have a characteristic frequency of 0.2 Hz and there is an antiphase correlation of temperatures in thermocouples with 180° azimuthal angles by using the slender melt zone.
| Original language | English |
|---|---|
| Pages (from-to) | 85-94 |
| Number of pages | 10 |
| Journal | Journal of Crystal Growth |
| Volume | 186 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Mar 1 1998 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry
Cite this
Temperature fluctuations of the Marangoni flow in a liquid bridge of molten silicon under microgravity on board the TR-IA-4 rocket. / Nakamura, Shin; Hibiya, Taketoshi; Kakimoto, Koichi; Imaishi, Nobuyuki; Nishizawa, Shinichi; Hirata, Akira; Mukai, Kusuhiro; Yoda, Shin Ichi; Morita, Tomoji S.
In: Journal of Crystal Growth, Vol. 186, No. 1-2, 01.03.1998, p. 85-94.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Temperature fluctuations of the Marangoni flow in a liquid bridge of molten silicon under microgravity on board the TR-IA-4 rocket
AU - Nakamura, Shin
AU - Hibiya, Taketoshi
AU - Kakimoto, Koichi
AU - Imaishi, Nobuyuki
AU - Nishizawa, Shinichi
AU - Hirata, Akira
AU - Mukai, Kusuhiro
AU - Yoda, Shin Ichi
AU - Morita, Tomoji S.
PY - 1998/3/1
Y1 - 1998/3/1
N2 - Temperature fluctuation measurements in a liquid bridge of molten silicon, which shows the Marangoni flow in highly super-critical condition, are performed in a half-zone configuration under microgravity on board a TR-IA-4 rocket and on the ground. In the microgravity experiment, two types of temperature oscillation are observed during the melting process of silicon and in the cylindrical half-zone melt. The former oscillation, which has a frequency of about 0.1 Hz during the melting process, has an antiphase correlation of temperature oscillation measured in thermocouples separated by 90° azimuthal angles. The latter oscillation in the cylindrical liquid bridge has no remarkable frequency; however, it tends to have the antiphase correlation in between thermocouples with 180° azimuthal angles. In the ground experiment, temperature fluctuations have a characteristic frequency of 0.2 Hz and there is an antiphase correlation of temperatures in thermocouples with 180° azimuthal angles by using the slender melt zone.
AB - Temperature fluctuation measurements in a liquid bridge of molten silicon, which shows the Marangoni flow in highly super-critical condition, are performed in a half-zone configuration under microgravity on board a TR-IA-4 rocket and on the ground. In the microgravity experiment, two types of temperature oscillation are observed during the melting process of silicon and in the cylindrical half-zone melt. The former oscillation, which has a frequency of about 0.1 Hz during the melting process, has an antiphase correlation of temperature oscillation measured in thermocouples separated by 90° azimuthal angles. The latter oscillation in the cylindrical liquid bridge has no remarkable frequency; however, it tends to have the antiphase correlation in between thermocouples with 180° azimuthal angles. In the ground experiment, temperature fluctuations have a characteristic frequency of 0.2 Hz and there is an antiphase correlation of temperatures in thermocouples with 180° azimuthal angles by using the slender melt zone.
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U2 - 10.1016/S0022-0248(97)00440-5
DO - 10.1016/S0022-0248(97)00440-5
M3 - Article
VL - 186
SP - 85
EP - 94
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
IS - 1-2
ER -