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Niranjan R, Rout RK, Srivastava R, et al. A 10(9) neutrons/pulse transportable pulsed D-D neutron source based on flexible head plasma focus unit. Rev Sci Instrum. 2016;87(3):033504doi: 10.1063/1.4942666.
Niranjan, R., Rout, R. K., Srivastava, R., Kaushik, T. C., & Gupta, S. C. (2016). A 10(9) neutrons/pulse transportable pulsed D-D neutron source based on flexible head plasma focus unit. The Review of scientific instruments, 87(3), 033504. https://doi.org/10.1063/1.4942666
Niranjan, Ram, et al. "A 10(9) neutrons/pulse transportable pulsed D-D neutron source based on flexible head plasma focus unit." The Review of scientific instruments vol. 87,3 (2016): 033504. doi: https://doi.org/10.1063/1.4942666
Niranjan R, Rout RK, Srivastava R, Kaushik TC, Gupta SC. A 10(9) neutrons/pulse transportable pulsed D-D neutron source based on flexible head plasma focus unit. Rev Sci Instrum. 2016 Mar;87(3):033504. doi: 10.1063/1.4942666. PMID: 27036774.
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Rev Sci Instrum. 2016 Mar;87(3):033504. doi: 10.1063/1.4942666.

A 10(9) neutrons/pulse transportable pulsed D-D neutron source based on flexible head plasma focus unit.

The Review of scientific instruments

Ram Niranjan, R K Rout, R Srivastava, T C Kaushik, Satish C Gupta

Affiliations

  1. Applied Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.

PMID: 27036774 DOI: 10.1063/1.4942666

Abstract

A 17 kJ transportable plasma focus (PF) device with flexible transmission lines is developed and is characterized. Six custom made capacitors are used for the capacitor bank (CB). The common high voltage plate of the CB is fixed to a centrally triggered spark gap switch. The output of the switch is coupled to the PF head through forty-eight 5 m long RG213 cables. The CB has a quarter time-period of 4 μs and an estimated current of 506 kA is delivered to the PF device at 17 kJ (60 μF, 24 kV) energy. The average neutron yield measured using silver activation detector in the radial direction is (7.1 ± 1.4) × 10(8) neutrons/shot over 4π sr at 5 mbar optimum D2 pressure. The average neutron yield is more in the axial direction with an anisotropy factor of 1.33 ± 0.18. The average neutron energies estimated in the axial as well as in the radial directions are (2.90 ± 0.20) MeV and (2.58 ± 0.20) MeV, respectively. The flexibility of the PF head makes it useful for many applications where the source orientation and the location are important factors. The influence of electromagnetic interferences from the CB as well as from the spark gap on applications area can be avoided by putting a suitable barrier between the bank and the PF head.

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