Using a 4.7 kJ Plasma Focus for introspective imaging of metallic objects and for neutronic detection of water

Moreno, C.; Clausse, Alejandro; Martínez, Jorge Coque; Llovera, Roberto; Tartaglione, Aureliano; Vénere, Marcelo; Barbuzza, Rosana; Fresno, Mariana del

doi:10.1063/1.1374925

Cited by 18 publications

(16 citation statements)

References 6 publications

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“…High sensitivity orthochromatic Agfa x-ray film along with a terbium-doped gadolinium oxisulfide ͑Gd 2 O 2 S:Tb͒ intensifying screen, which is one of the most widely used film-screen sets for general purpose radiography as well as for hard x-ray imaging, [11][12][13][14] was used as a hard x-ray detector.…”

Section: Methodsmentioning

confidence: 99%

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Effective hard x-ray spectrum of a tabletop Mather-type plasma focus optimized for flash radiography of metallic objects

Raspa

Moreno

Sigaut

et al. 2007

Journal of Applied Physics

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Effective hard x-ray spectrum of a tabletop Mather-type plasma focus optimized for flash radiography of metallic objects The effective spectrum of the hard x-ray output of a Mather-type tabletop plasma focus device was determined from attenuation data on metallic samples using commercial radiographic film coupled to a Gd 2 O 2 S : Tb phosphor intensifier screen. It was found that the radiation has relevant spectral components in the 40-150 keV range, with a single maximum around 60− 80 keV. The radiation output allows for 50 ns resolution, good contrast, and introspective imaging of metallic objects even through metallic walls. A numerical estimation of the induced voltage on the focus during the compressional stage is briefly discussed.

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Section: Methodsmentioning

confidence: 99%

“…11 Figures 1 and 2, respectively, show digitized images of a metallic BNC tee connector, and a 10-mm-thick aluminum block with two 1/4-20 bolts, made of steel ͑left͒ and brass ͑right͒, screwed on it. Both radiographies were taken with a single plasma focus shot, through a 9-mm-thick iron flange.…”

Section: Introductionmentioning

confidence: 99%

Effective hard x-ray spectrum of a tabletop Mather-type plasma focus optimized for flash radiography of metallic objects

Raspa

Moreno

Sigaut

et al. 2007

Journal of Applied Physics

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“…The neutrons pulses emitted by plasma focus can be used to determine the presence and after the proper calibration estimate the concentration of hydrogenated substances in the proximities of the device [7,31]. The basic idea of the method is depicted in figure 5.…”

Section: Prospection By Fast Neutrons Scatteringmentioning

confidence: 99%

Plasma focus based repetitive source of fusion neutrons and hard x-rays

et al. 2008

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A plasma focus device capable of operating at 0.2 pulses per second during several minutes is used as a source of hard x-rays and fast neutrons. An experimental demonstration of the use of the neutrons emissions for radiation probing of hydrogenated substances is presented, showing a particular application in detecting water concentrations differences in the proximity of the device by elastic scattering. Moreover, the device produces ultrashort hard x-rays pulses useful for introspective images of small objects, static or in fast motion, suitable for the identification of internal submillimetric defects. Clear images of metallic objects shielded by several millimeters iron walls are shown.

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“…19,20 In order to fully take advantage of the mentioned potentials, a PF device should be designed properly, providing flexibility, easy operation and maintenance, and portability. In this article, a compact design 2.5 kJ, 30 kV PF specially designed to perform as a hard x-ray radiation source suitable for flash radiography of metallic pieces is presented.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, hard x rays generated by a compact 4.7 kJ, 30 kV PF operated in deuterium were used to obtain radiographic images of metallic objects either static [18][19][20] or in fast rotation 21 and its neutron emission was used for side on water detection. 19,20 In order to fully take advantage of the mentioned potentials, a PF device should be designed properly, providing flexibility, easy operation and maintenance, and portability.…”

Section: Introductionmentioning

confidence: 99%

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

Lorenzo

Raspa

Knoblauch

et al. 2007

Journal of Applied Physics

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Effective hard x-ray spectrum of a tabletop Mather-type plasma focus optimized for flash radiography of metallic objects J. Appl. Phys. 102, 123303 (2007) Hard x-ray source for flash radiography based on a 2.5 kJ plasma focus A compact tabletop plasma focus suitable for hard x-ray imaging applications is presented. The hard x-ray emission was characterized by means of an effective energy analysis, based on images obtained with a single shot. The effective energy of the radiation was estimated to be around 83 keV from radiographic images of metallic pieces. Numerical calculations, based on validated codes, are presented to give a quantitative interpretation of the experimental results. Experimental demonstration of the suitability of this device for introspective imaging of metallic pieces is also given.

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Using a 4.7 kJ Plasma Focus for introspective imaging of metallic objects and for neutronic detection of water

Cited by 18 publications

References 6 publications

Effective hard x-ray spectrum of a tabletop Mather-type plasma focus optimized for flash radiography of metallic objects

Effective hard x-ray spectrum of a tabletop Mather-type plasma focus optimized for flash radiography of metallic objects

Plasma focus based repetitive source of fusion neutrons and hard x-rays

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

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