The new PADC based fast neutron dosimetry system of the INFN—LNF

Bedogni, R.; Esposito, A.; Lövestam, Göran; García, M.; Vîrgolici, Marian

doi:10.1016/j.radmeas.2008.03.058

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…To estimate the number of neutrons that traversed the detector since its production, the CR-39 slabs are etched for 90 min in a 6.25 N KOH solution at 70 • C. The number of tracks consistent with α particles is then estimated with an in-house automated reader consisting of an epiillumination microscope on which a 8 Mpixel CCD camera is mounted [10]. This number, divided by the detector area (2.224 cm 2 ), yields the track density (D).…”

Section: The Cr-39 Detectorsmentioning

confidence: 99%

Search for neutron flux generation in a plasma discharge electrolytic cell

et al. 2014

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Following some recent unexpected hints of neutron production in high-voltage atmospheric discharges, we present a measurement of the neutron flux in plasma discharges in electrolytic cells. We use two different types of neutron detectors, polyallyl diglycol carbonate (PADC, aka CR-39) tracers and indium disks. At 95 % C.L. we provide an upper limit of 1.5 neutrons cm −2 s −1 for the thermal neutron flux at ≈5 cm from the center of the cell. Allowing for a higher energy neutron component, the largest allowed flux is 64 neutrons cm −2 s −1 . This upper limit is two orders of magnitude smaller than the signal previously claimed in an electrolytic cell plasma discharge experiment. Furthermore the behavior of the CR-39 is discussed to point out possible sources of spurious signals.

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Section: The Cr-39 Detectorsmentioning

confidence: 99%

Search for neutron flux generation in a plasma discharge electrolytic cell

et al. 2014

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“…After irradiation, the detectors are processed through a pre-etching of 1 h in a 60% ethanol þ 40% 6.25N KOH solution at 70 C, followed by a 10 h etching in 6.25N KOH solution at 70 C (Morelli et al, 1999). The read out is performed at the INFN-LNF with an automated reader (Bedogni et al, 2008) equipped with an epi-illuminated microscope and an 8 Mpixel USB camera (3272 Â 2469 pixels, 256 grey levels). For each detector, four fields of view are analysed for a total scanned area of 2.224 cm 2 .…”

Section: Methodsmentioning

confidence: 99%

“…At INFNdLNF (Frascati, Rome) a chemically etched PADC based fast neutron dosimetry service has been established for the needs of the radiological surveillance around the DAFNE high energy eþ/eÀ collider (Bedogni et al, 2008). Whilst the area dosimetry system relies on a four-element planar configuration (Bedogni et al, 2008a), an individual monitoring system for neutrons is not implemented yet.…”

Section: Introductionmentioning

confidence: 99%