Hard x-ray source for flash radiography based on a 2.5kJ plasma focus

Lorenzo, F. Di; Raspa, V.; Knoblauch, P.; Lazarte, Alejandro I.; Moreno, C.; Clausse, Alejandro

doi:10.1063/1.2767829

Cited by 19 publications

(10 citation statements)

References 23 publications

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“…The pinching evidence has been observed in the PF devices operated at very low bank energies of ≈100 J (Soto et al 2001), of 32-102 J (Silva et al 2002), of 50 J (Moreno et al 2003), of 50-70 J (Silva et al 2004) and of 58-160 J (Hassan et al 2006). The generation of extreme ultraviolet (Mohanty et al 2006) as a compact and competent source for lithography, emission of soft x-rays (Mohammadi et al 2007) useful for lithography and production of hard x-rays (Moreno et al 2006, Lorenzo et al 2007 for flash radiography have also been reported. It is observed that none of these recent PF devices uses a sealed plasma chamber for long duration and multi-shot operations with a single gas filling.…”

Section: Introductionmentioning

confidence: 82%

Battery powered tabletop pulsed neutron source based on a sealed miniature plasma focus device

Rout¹,

Mishra²,

Rawool³

et al. 2008

J. Phys. D: Appl. Phys.

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The development of a novel and portable tabletop pulsed neutron source is presented. It is a battery powered neutron tube based on a miniature plasma focus (PF) device having all metal-sealed components. The tube, fuelled with deuterium gas, generates neutrons because of D–D fusion reactions. The inner diameter and the length of the tube are 3.4 cm and 8 cm, respectively. A single capacitor (200 J, 4.0 µF, 10 nH) of compact size (17 cm × 15 cm × 13 cm, 6.5 kg) is used as the energy driver. A power supply system charges the capacitor to 10 kV in 10 s and also provides a 30 kV trigger pulse to the spark gap. An input of 24 V dc (7.5 A) to the power supply system is provided by two rechargeable batteries (each 12 V, 7.5 A, 20 h). The device has produced neutrons for 150 shots within a period of 120 days in a very reliable manner without purging the deuterium gas between the shots. For the first 50 shots, the average yield is (1.6 ± 0.3) × 106 neutrons/shot in 4π sr with a pulse width of 23.4 ± 3.3 ns. The estimated neutron energy is 2.47 ± 0.22 MeV. The neutron production reduces slowly and reaches the detection threshold value of 3 × 105 neutrons/shot towards the last shots. The device produces neutrons in a similar manner on evacuation and refilling. The height of the mounted PF tube with the capacitor and the spark gap is 35 cm. The complete setup comprising the capacitor with spark gap, the PF tube, the power supply system with two batteries and the control panel weighs only 23 kg.

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Section: Introductionmentioning

confidence: 82%

Battery powered tabletop pulsed neutron source based on a sealed miniature plasma focus device

Rout¹,

Mishra²,

Rawool³

et al. 2008

J. Phys. D: Appl. Phys.

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“…[3][4][5][6][7][8][9]. A most comprehensive review of the state of the art can be found in Bernard et al 10 The approach followed in the present work is to use the electron beam generated backward by the Plasma Focus device to generate xrays upon conversion of the beam onto a metal target.…”

mentioning

confidence: 99%

EBT2 dosimetry of x-rays produced by the electron beam from a Plasma Focus for medical applications

Ceccolini

Rocchi

Mostacci

et al. 2012

Journal of Applied Physics

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The electron beam emitted from the back of Plasma Focus devices is being studied as a radiation source for IORT (IntraOperative Radiation Therapy) applications. A Plasma Focus device is being developed to this aim, to be utilized as an X-ray source. The electron beam is driven to impinge on 50 µm brass foil, where conversion X-rays are generated. Measurements with gafchromic film are performed to analyse the attenuation of the X-rays beam and to predict the dose given to the culture cell in radiobiological experiments to follow.

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“…The soft X-ray emission from dense plasma focus is according to two mechanisms: linear radiation and continuum radiation (recombination and Bremsstrahlung radiation) [18][19][20]. The hard X-rays are also produced by the collisions of electron beams resulting from the collapse of the plasma pinch with the anode [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Atomic Number on Plasma Pinch Properties and Radiative Emissions

Sahyouni

Nassif

2021

Advances in High Energy Physics

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The aim of the research is to examine the dependence of plasma pinch properties and radiation emissions on the atomic number of the operating gas within the dense plasma focus device (NX2) when using hydrogen and argon gases. Simulation was performed with Lee’s code on an NX2 dense plasma focus at a constant gas pressure value ( P 0 = 0.5 torr ). The results showed that the minimum radius of the plasma focus in the case of the hydrogen plasma pinch was 0.30 cm and in the case of the argon plasma pinch 0.17 cm, and this affected the value of the radiation emission as it was 7.8 × 10 − 6 J and 11 J for the hydrogen and argon pinch, respectively. The energy of the ion beam released by the breakdown of the plasma pinch was found as E n = 23.8 J in the state of hydrogen and E n = 105 J in the state of argon.

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Hard x-ray source for flash radiography based on a 2.5kJ plasma focus

Cited by 19 publications

References 23 publications

Battery powered tabletop pulsed neutron source based on a sealed miniature plasma focus device

Battery powered tabletop pulsed neutron source based on a sealed miniature plasma focus device

EBT2 dosimetry of x-rays produced by the electron beam from a Plasma Focus for medical applications

Effect of Atomic Number on Plasma Pinch Properties and Radiative Emissions

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