Design and construction of a very low energy plasma focus, operating at repetitive discharge mode and pinching evidences

2017 ◽  
Vol 381 (34) ◽  
pp. 2813-2820 ◽  
Author(s):  
Hossein Jafari ◽  
Morteza Habibi ◽  
Gholam Reza Eta'ati
Keyword(s):  
Plasma Focus ◽  
Low Energy ◽  
Discharge Mode ◽  
Repetitive Discharge ◽  
Design And Construction

Design and construction of a very small plasma focus in the limit of low energy

2001 ◽  
Author(s):  
Patricio Silva ◽  
Leopoldo Soto ◽  
Gustavo Sylvester ◽  
Marcelo Zambra ◽  
Horacio Bruzzone ◽  
...  
Keyword(s):  
Plasma Focus ◽  
Low Energy ◽  
Design And Construction

Comparative study of low energy Mather-type plasma focus devices

1995 ◽  
Vol 4 (1) ◽  
pp. 117-124 ◽  
Author(s):  
M Zakaullah ◽  
G Murtaza ◽  
I Ahmad ◽  
F N Beg ◽  
M M Beg ◽  
...  
Keyword(s):  
Comparative Study ◽  
Plasma Focus ◽  
Low Energy

Delayed hot spots in a low energy plasma focus

Pramana ◽  
1991 ◽  
Vol 37 (1) ◽  
pp. 93-103 ◽  
Author(s):  
R K Rout ◽  
A Shyam
Keyword(s):  
Plasma Focus ◽  
Hot Spots ◽  
Low Energy

A COST EFFECTIVE X-RAY DETECTOR FOR PLASMA FOCUS DIAGNOSTICS

2000 ◽  
Vol 14 (15) ◽  
pp. 563-570 ◽  
Author(s):  
M. ZAKAULLAH ◽  
IJAZ AKHTAR ◽  
S. F. MEHMOOD ◽  
A. WAHEED ◽  
G. MURTAZA
Keyword(s):  
Ultraviolet Radiation ◽  
Plasma Focus ◽  
Vacuum Ultraviolet ◽  
Cost Effective ◽  
Low Energy ◽  
Radiation Environment ◽  
Anode Surface ◽  
Current Sheath ◽  
X Ray ◽  
Axially Moving

A time-resolved rugged X-ray detector (XRD) which may be used in intense radiation environment is developed. The detector is used to study the X-ray emission from a low-energy (2.3 kJ) Mather-type plasma focus energized by a 32 μF single capacitor, using hydrogen and argon (3:2) mixture as gas filling. In the detector, the electron emitter is made of nickel and aluminum. The sensitivity of the detector with nickel cathode is found to be very low. No signal could be recorded by masking the detector with even the 2 μm thick Al foil. When Al cathode is used in the XRD, the sensitivity of the detector increases abruptly. To stop the optical/ultraviolet radiation from approaching the active area, it is masked with 6 μm Al filter. It is found that an XRD with nickel cathode is not useful for X-ray detection in a low-energy plasma focus. However, due to its excellent response to vacuum ultraviolet radiation (≤600 Å), it may find application in the study of the axial rundown of current sheath, and its velocity. The X-ray emission from focus plasma is the highest at 0.5 mbar. With increase in pressure, the emission is dropped. At filling pressures of 2.0–2.5 mbar, the X-ray emission increases again. High X-ray emission at 0.5 mbar is due to interaction of energetic electrons in the current sheath with the anode surface, whereas moderately high emission at 2.0–2.5 mbar is caused by an axially moving shockwave.

Nitrogen ion spectrum from a low energy plasma focus device

1997 ◽  
Vol 25 (3) ◽  
pp. 455-459 ◽  
Author(s):  
H. Kelly ◽  
A. Lepone ◽  
A. Marquez
Keyword(s):  
Plasma Focus ◽  
Low Energy ◽  
Plasma Focus Device ◽  
Nitrogen Ion

Synthesis of hydrocarbon-vanadium thin films by a low energy plasma focus device

2022 ◽  
pp. 152399
Author(s):  
F.M. Aghamir ◽  
A.R. Momen-Baghdadabad ◽  
W. Mamaani-Mamaan
Keyword(s):  
Thin Films ◽  
Plasma Focus ◽  
Low Energy ◽  
Plasma Focus Device

Damage study and comparison the effects of high-energy pulsed-protons of plasma focus device with low-energy protons of glow discharge plasma of tokamak

2020 ◽  
Vol 2 (3) ◽  
pp. 035001
Author(s):  
Farid Sedighi ◽  
Ardavan Kouhi ◽  
Davoud Iraji ◽  
Chapar Rasouli ◽  
Babak Shirani Bidabadi ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Plasma Focus ◽  
Discharge Plasma ◽  
High Energy ◽  
Low Energy ◽  
Plasma Focus Device ◽  
Glow Discharge Plasma ◽  
Damage Study

SOFT X-RAY EMISSION IN THE (1.0–1.5 KEV) WINDOW WITH NITROGEN FILLING IN A LOW ENERGY PLASMA FOCUS

2002 ◽  
Vol 16 (09) ◽  
pp. 309-318 ◽  
Author(s):  
M. SHAFIQ ◽  
SARTAJ ◽  
S. HUSSAIN ◽  
M. SHARIF ◽  
S. AHMAD ◽  
...  
Keyword(s):  
Plasma Focus ◽  
Pressure Range ◽  
Filling Pressure ◽  
Pinhole Camera ◽  
Low Energy ◽  
X Rays ◽  
System Efficiency ◽  
Current Sheath ◽  
Pin Diodes ◽  
X Ray

A study of soft X-ray emission in the 1.0–1.5 keV energy range from a low energy (1.15 kJ) plasma focus has been conducted. X-rays are detected with the combination of Quantrad Si PIN-diodes masked with Al (50 μm), Mg (100 μm) and Ni (17.5 μm) filters and with a pinhole camera. The X-ray flux is found to be measurable within the pressure range of 0.1–1.0 mbar nitrogen. In the 1.0–1.3 keV and 1.0–1.5 keV windows, the X-ray yield in 4π-geometry is 1.03 J and 14.0-J, respectively, at a filling pressure of 0.25 mbar and the corresponding efficiencies are 0.04% and 1.22%. The total X-ray emission in 4π-geometry is 21.8 J, which corresponds to the system efficiency of about 1.9%. The X-ray emission is found dominantly as a result of the interaction of energetic electrons in the current sheath with the anode tip. Images recorded by the pinhole camera confirm the emission of X-rays from the tip of the anode.

A SIMPLE PRESSURIZED SPARKGAP FOR PLASMA FOCUS OPERATION

1993 ◽  
Vol 07 (12) ◽  
pp. 835-840 ◽  
Author(s):  
M. ZAKAULLAH ◽  
SAMIA KAUSAR ◽  
IMTIAZ AHMED ◽  
G. MURTAZA ◽  
M.M. BEG
Keyword(s):  
Plasma Focus ◽  
Discharge Current ◽  
Rise Time ◽  
Cost Effective ◽  
Low Energy

A simple, low-inductance, cost-effective pressurized sparkgap is developed for a low-energy plasma focus operation energised by a single 32 µF, 15 kV (3.6 kJ) capacitor. This sparkgap is capable of handling discharge current up to 200 kA with a rise time of less than one µsec. The system works reliably and is reproducible for capacitor charging of 10–13 kV.

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