Uranium comparison by means of AMS and ICP-MS and Pu and¹³⁷Cs results around an Italian Nuclear Power Plant

Abstract

Abstract. Italy built and commissioned 4 nuclear power plants between , which delivered a total of 1500 MW. All four were closed down after the Chernobyl accident following a referendum in 1987. One of the plants was Garigliano, commissioned in 1959. This plant used a 160 MW BWR1 (SEU of 2.3 %) and was operational from 1964 to 1979, when it was switched off for maintenance. It was definitively stopped in 1982, and is presently being decommissioned. We report here details on the chemistry procedure and on the measurements for soil samples, collected up to 4.5 km from the Nuclear Plant. A comparison between uranium ( 238 U) concentration as determined by means of AMS (Accelerator Mass Spectrometry) and by ICP-MS (Inductively

137Cs and isotopic ratios of Pu and U in lichens and mosses from Russian Arctic areas

“…According to de Cesare et al ( 2015 ) and Kelley et al ( 1999 ), the 137 Cs/ 239+240 Pu activity ratio was about 28 (i.e. 239+240 Pu/ 137 Cs would be about 0.0357) in global fallout in 2008.…”

“…Compared to corresponding values in global fallout, higher 137 Cs/ 239+240 Pu (> 40 during sampling time) and lower 239+240 Pu/ 137 Cs (< 0.025) activity ratios were found in all samples, except the fore mentioned ‘AK141/96’ (Table 2 ). De Cesare et al ( 2015 ) determined the activity ratio 137 Cs/ 239+240 Pu from the soil samples collected nearby a nuclear power plant in Italy, and they got a ratio value range of 37–58. It was concluded in their study that the 137 Cs/ 239+240 Pu ratio values in Italy were higher than the global fallout value (~ 28 in 2008) due to received contamination from the Chernobyl accident.…”

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

“…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.…”

A novel recession rate physics methodology for space applications at CIRA by means of CIRCE radioactive beam tracers

“…The CIRCE [33,34] tandem accelerator will be used to produce the activated TPS samples (ablative materials based on carbon-phenolic composites, already developed at CIRA, and on commercial ablative samples, such as Norcoat-Liege and P50). The CIRCE accelerator, originally equipped for radiocarbon, was upgraded both to perform AMS with actinides ( 236 U, 239 Pu and its isotopes) ions [35][36][37] for environmental measurements [38][39][40][41], thus having the possibility of generating an ion beam in the entire periodic table, and to produce and transport a high intensity RIB [15]. In order to perform the plasma testing for the TPS recession rate experiments, the hypersonic plasma wind tunnel GHIBLI facility [17] at CIRA will be operated.…”