A neutron source with 1014 DT neutron yield

2019 ◽  
Vol 28 (11) ◽  
pp. 1950097 ◽  
Author(s):  
Yasar Ay
Keyword(s):  
Neutron Source ◽  
Plasma Focus ◽  
Neutron Yield ◽  
Pressure Range ◽  
Gas Pressure ◽  
Plasma Focus Device ◽  
Operational Conditions ◽  
Rate Of Increase ◽  
Spherical Plasma ◽  
High Neutron

The developed spherical plasma focus model is used in this study to investigate the optimum neutron yield in terms of the gas pressure, cathode radius and external inductance. The optimum values for these parameters are found separately. Then, the charging voltage is varied from 25[Formula: see text]kV to 35[Formula: see text]kV with 1[Formula: see text]kV increment by using these separately found optimum values to see the rate of increase in neutron yield. While the used gas pressure range is 1–40[Formula: see text]Torr with 1[Formula: see text]Torr increment, cathode radius range is 11.5–17[Formula: see text]cm with 0.5[Formula: see text]cm increment. External inductance is varied from 10[Formula: see text]nH to 150[Formula: see text]nH with 5[Formula: see text]nH increment. The optimum values for gas pressure, cathode radius and external inductance are found to be 26[Formula: see text]Torr, 15[Formula: see text]cm and 75[Formula: see text]nH, respectively. Even though combining these separately found optimum values of pressure, cathode radius and external inductance does not necessarily form an optimized set of operational conditions for the SPF, they lead to a higher neutron yield in that while neutron yield with these separately found optimum values at 25[Formula: see text]kV charging voltage is [Formula: see text] (higher than the measured neutron yield of [Formula: see text] at 25[Formula: see text]kV), it increases to [Formula: see text], when charging voltage is increased to 35[Formula: see text]kV. Using these values shows that spherical plasma focus device can be used as a neutron source with high neutron yield (on the order of [Formula: see text]).

Calibration of Activation Counter by a 2.48 kJ Plasma Focus Device

2010 ◽  
Author(s):  
Sahar Rajabi Moghadam ◽  
Fereydoon Abbasi Davani ◽  
Babak Shirani Bidabadi
Keyword(s):  
Neutron Source ◽  
Plasma Focus ◽  
Neutron Yield ◽  
Plastic Scintillator ◽  
Plasma Focus Device ◽  
Removal Method ◽  
Deuterium Gas ◽  
Silver Activation Counter

A silver activation counter has been constructed by plastic scintillator plates along with silver foils for determination the neutron yield of a 2.48kJ plasma focus device, SBUPF1. This counter was calibrated by source removal method with an Am-Be 5 Ci neutron source which was placed above the anode of plasma focus device. Deuterium gas up to 8mbar pressure was injected to this device, and the neutron yield produced by pulsed D-D fusion of plasma focus device was measured by the counter. the neutron yield of SBUPF1 in 8mbar pressure was obtained 3.71±0.32×107 neutrons per shot. This result has relatively agreed with the neutron yield measured by silver activation Geiger counters.

Fast-Neutron Source Based on Plasma-Focus Device

2008 ◽  
Author(s):  
M. Scholz ◽  
B. Bienkowska ◽  
M. Chernyshova ◽  
V. A. Gribkov ◽  
S. Jednorog ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Neutron Source ◽  
Plasma Focus ◽  
Plasma Focus Device

Palm top plasma focus device as a portable pulsed neutron source

2013 ◽  
Vol 84 (6) ◽  
pp. 063503 ◽  
Author(s):  
R. K. Rout ◽  
Ram Niranjan ◽  
P. Mishra ◽  
R. Srivastava ◽  
A. M. Rawool ◽  
...  
Keyword(s):  
Neutron Source ◽  
Plasma Focus ◽  
Plasma Focus Device ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source

Efficiency of Energy Transfer in a Small Plasma Focus Device

2005 ◽  
Vol 107 ◽  
pp. 95-98
Author(s):  
Dusit Ngamrungroj ◽  
Rattachat Mongkolnavin ◽  
Chiow San Wong
Keyword(s):  
Energy Transfer ◽  
Plasma Focus ◽  
Pressure Range ◽  
Initial Energy ◽  
Energy Transfer Efficiency ◽  
Plasma Focus Device ◽  
Transfer Efficiency ◽  
Plasma Dynamics ◽  
Plasma Energy ◽  
Basic Model

A study of energy transfer in a small plasma focus device has been carried out during its axial phase. The snow-plough model has been used in the simulation as a basic model for the calculation of plasma dynamics. The energy transferred to the plasma is calculated by considering the work done by the electromagnetic piston during the axial phase. It was found that the plasma energy calculated by this model agrees well with the experimental data within the pressure range of 1 mbar to 4 mbar if the mass shedding effect is included in the model. According to the present computation, the energy transferred into the plasma, in the case of a plasma focus with 2.3 kJ initial energy operated with nitrogen gas within the pressure range of 1 to 4 mbar, is between 224 J to 250 J. This corresponds to energy transfer efficiency of 9.6% to 10.7%. The mass shedding factor decreases from 0.23 to 0.069 with increasing pressure. Correspondingly, the energy transfer efficiency changes slightly at a higher pressure.

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