Background reduction in 236U/238U measurements

Buompane, R.; Cesare, M. De; Cesare, N. De; Leva, A. Di; D’Onofrio, Antonio; Fifield, L.K.; Fröhlich, Michaela B.; Gialanella, L.; Marzaioli, Fabio; Sabbarese, C.; Tims, S.G.; Wallner, A.

doi:10.1016/j.nimb.2015.04.003

Cited by 12 publications

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“…Furthermore, the DC technique has to be used in applications where the emissivity of the materials is not well known, such as in the case of the test performed in the PWT facilities to verify the TPS withstanding the hypersonic plasma interactions [12][13][14][15]. Before testing the methodology in the PWT aerospace field, the Center for Isotopic Research on the Cultural and Environmental heritage (CIRCE) accelerator [16][17][18][19], upgraded both to perform accelerator mass spectrometry (AMS) up to actinides [20][21][22][23][24] and for experimental nuclear astrophysics [25][26][27][28][29][30][31][32] as other AMS systems [33], can be used for the preliminary test at temperature values reaching 1500 • C, with materials that, at the beginning of the process, are characterized by a low emissivity, and increase their emissivity value with a carbon ions implantation.…”

Section: Results and Conclusionmentioning

confidence: 99%

Advances in Material Wide Range Temperature Determination by Dual-Color Emissivity Free Methodology in Long-Mid-near Infrared Ranges at Non-stationary Conditions

et al. 2021

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Dual color emissivity free methodology by thermography allows to obtain 2D (two-dimensional) temperature maps by using local grey body hypotheses and narrowband filters. By using a suitable pair of filters is possible to obtain the ratio between two thermal camera input signals that depend only on the temperature and not on the emissive properties of the investigated surface. The aim of this concise review paper is to summarize and discuss the developments and applications from long- to mid-near infrared ranges and in a wide range of temperature values of the dual-color thermographic technique that has been analysed through the use of an analytical model based on the integration of Planck’s law and attenuated with the transmission curves of sensors, optics, filters, and attenuators during the last years. Moreover, the applicability to the non-stationary temperature conditions and finalized to the materials mainly used in the aerospace plasma wind tunnel (PWT) re-entry are shown.

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