Abstract
Inductive pulsed power generator which has copper wire fuses used as an opening switch has been developed at Kyushu University for a power source of gas-puff z-pinch. The inductive pulsed power generator has a capacitor of 11μF and 19.8kJ as a primary energy source and can supply a driving current with rising time of about 200ns to the gas-puff z-pinch plasma. Experiments with fast bank and inductive pulsed power methods are performed to investigate characteristics of gas-puff z-pinch plasmas. Obtained results show that the intensity of soft x-ray decreases gradually with a delay time which is the time difference between beginning of coil current from a gas-puff actuator and that of generator current in both methods. From the observation of hot spots recorded with two pin-hole cameras arranged at right angles each other, it is found that the hot spots tend to align on the central axis between electrodes with increase of rising rate of plasma current. Behavior of imploding cylindrical plasma depend on the rising rate of plasma current. Especially, sausage instability in the pinching plasma along the axis becomes predominant in case of higher rising rate of current by the inductive pulsed power method and the faster current leads to spatially confined distributions of hot spots appearance shot to shot.
| Original language | English |
|---|---|
| Pages | 845-850 |
| Number of pages | 6 |
| Publication status | Published - Dec 1 1997 |
| Event | Proceedings of the 1997 11th International Pulsed Power Conference. Part 2 (of 2) - Baltimore, MD, USA Duration: Jun 29 1997 → Jul 2 1997 |
Other
| Other | Proceedings of the 1997 11th International Pulsed Power Conference. Part 2 (of 2) |
|---|---|
| City | Baltimore, MD, USA |
| Period | 6/29/97 → 7/2/97 |
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All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Cite this
Soft x-ray emission from the gas-puff z-pinch plasma produced by an inductive pulsed power generator. / Imasaka, K.; Hara, S.; Kawauchi, Y.; Kawazoe, K.; Suehiro, Junya; Hara, M.
1997. 845-850 Paper presented at Proceedings of the 1997 11th International Pulsed Power Conference. Part 2 (of 2), Baltimore, MD, USA, .Research output: Contribution to conference › Paper
}
TY - CONF
T1 - Soft x-ray emission from the gas-puff z-pinch plasma produced by an inductive pulsed power generator
AU - Imasaka, K.
AU - Hara, S.
AU - Kawauchi, Y.
AU - Kawazoe, K.
AU - Suehiro, Junya
AU - Hara, M.
PY - 1997/12/1
Y1 - 1997/12/1
N2 - Inductive pulsed power generator which has copper wire fuses used as an opening switch has been developed at Kyushu University for a power source of gas-puff z-pinch. The inductive pulsed power generator has a capacitor of 11μF and 19.8kJ as a primary energy source and can supply a driving current with rising time of about 200ns to the gas-puff z-pinch plasma. Experiments with fast bank and inductive pulsed power methods are performed to investigate characteristics of gas-puff z-pinch plasmas. Obtained results show that the intensity of soft x-ray decreases gradually with a delay time which is the time difference between beginning of coil current from a gas-puff actuator and that of generator current in both methods. From the observation of hot spots recorded with two pin-hole cameras arranged at right angles each other, it is found that the hot spots tend to align on the central axis between electrodes with increase of rising rate of plasma current. Behavior of imploding cylindrical plasma depend on the rising rate of plasma current. Especially, sausage instability in the pinching plasma along the axis becomes predominant in case of higher rising rate of current by the inductive pulsed power method and the faster current leads to spatially confined distributions of hot spots appearance shot to shot.
AB - Inductive pulsed power generator which has copper wire fuses used as an opening switch has been developed at Kyushu University for a power source of gas-puff z-pinch. The inductive pulsed power generator has a capacitor of 11μF and 19.8kJ as a primary energy source and can supply a driving current with rising time of about 200ns to the gas-puff z-pinch plasma. Experiments with fast bank and inductive pulsed power methods are performed to investigate characteristics of gas-puff z-pinch plasmas. Obtained results show that the intensity of soft x-ray decreases gradually with a delay time which is the time difference between beginning of coil current from a gas-puff actuator and that of generator current in both methods. From the observation of hot spots recorded with two pin-hole cameras arranged at right angles each other, it is found that the hot spots tend to align on the central axis between electrodes with increase of rising rate of plasma current. Behavior of imploding cylindrical plasma depend on the rising rate of plasma current. Especially, sausage instability in the pinching plasma along the axis becomes predominant in case of higher rising rate of current by the inductive pulsed power method and the faster current leads to spatially confined distributions of hot spots appearance shot to shot.
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M3 - Paper
AN - SCOPUS:0031349315
SP - 845
EP - 850
ER -