Quantitative molecular plating of large-area 242Pu targets with improved layer properties

Vascon, A.; Runke, J.; Trautmann, Ν.; Cremer, B.; Eberhardt, Κ.; Düllmann, Ch. E.

doi:10.1016/j.apradiso.2014.10.002

Cited by 18 publications

(16 citation statements)

References 19 publications

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“…The same chemical compound originally dissolved in the electrolyte is deposited at the cathode. In order to better understand and to improve the MP technique extensive investigations of this process have been carried out recently [15,16] The detailed description of MP-technique is presented in [17,18].…”

Section: Technology Of Manufacturementioning

confidence: 99%

High-power radioactive targets as one of the key problems in further development of the research program on synthesis of new superheavy elements

Dmitriev

Popeko

2015

J Radioanal Nucl Chem

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Over the past decade, numerous isotopes of superheavy elements with Z = 112-118 have been synthesized. Production cross sections for these species are in the range of a few picobarns (1 pb = 10 -36 cm 2 ) or less. To get access to heavier nuclides and carry out a detailed study on their properties, a sufficient increase of the overall sensitivity of experiments is needed. The direct solution consist in increasing of the beam intensity and development of separators providing the necessary background suppression. Therefore, the design of high power radioactive targets becomes a key problem. In this report, we consider specific requirements to the development of targets for the synthesis of superheavy elements.

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Section: Technology Of Manufacturementioning

confidence: 99%

High-power radioactive targets as one of the key problems in further development of the research program on synthesis of new superheavy elements

Dmitriev

Popeko

2015

J Radioanal Nucl Chem

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“…The PuFC consists of 8 pairs of electrodes, which are disks of 98 mm diameter, mounted with a gap of 10 mm between each other. The cathodes are silicon wafers of 400 µm thickness where the 242 Pu was deposited as circular layers of 74 mm diameter using the molecular plating technique [6]. The plutonium content of each deposit is listed in Table 1.…”

Section: Setup Data Acquisition and Measurementmentioning

confidence: 99%

Measurement of the prompt fissionγ-ray spectrum of ²⁴²Pu

et al. 2018

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The prompt γ-ray spectrum of fission fragments is important in understanding the dynamics of the fission process, as well as for nuclear engineering in terms of predicting the γ-ray heating in nuclear reactors. The γ-ray spectrum measured from the fission fragments of the spontaneous fission of 242 Pu will be presented here. A fission chamber containing in total 37mg of 242 Pu was used as active sample. The γ-quanta were detected with high time-and energy-resolution using LaBr 3 and HPGe detectors, respectively, in coincidence with spontaneous fission events detected by the fission chamber. The acquired γ-ray spectra were corrected for the detector response using the spectrum stripping method. About 70 million fission events were detected which results in a very low statistical uncertainty and a wider energy range covered compared to previous measurements. The prompt fission γ-ray spectrum measured with the HPGe detectors shows structures that allow conclusions about the nature of γ-ray transitions in the fission fragments. The average photon multiplicity of 8.2 and the average total energy release by prompt photons per fission event of about 6.8 MeV were determined for both detector types.

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“…Nowadays, it is well known that this is not the case. Many different analytical methods [2,[12][13][14][15][16][17][18] have shown that the chemical species of the deposited element in the thin film differs from the species in the solution. Over time, mostly microscopic and also some spectroscopic methods have been used to analyse the thin films produced by MP and to understand how the process works, see e.g., [2,4,18,19].…”

Section: Introductionmentioning

confidence: 99%

The process of molecular plating and the characteristics of the produced thin films – What we have learned in 60 years and what is still unknown

et al. 2023

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Molecular plating is a well-established and widely used method for producing thin films of various elements, which are used in variety of nuclear physics applications. Sixty years have passed since the method was established, and some insights into the chemical process underlying the method and the composition of the thin films have been gained. A brief overview of what has been learned about molecular plating since its introduction and the methods applied in the characterization of molecular plated thin films is given here. Through various spectroscopic and microscopic methods, the process of molecular plating and the chemical composition are gradually being elucidated, albeit we still do not understand all aspects.

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Quantitative molecular plating of large-area 242Pu targets with improved layer properties

Cited by 18 publications

References 19 publications

High-power radioactive targets as one of the key problems in further development of the research program on synthesis of new superheavy elements

High-power radioactive targets as one of the key problems in further development of the research program on synthesis of new superheavy elements

Measurement of the prompt fissionγ-ray spectrum of ²⁴²Pu

The process of molecular plating and the characteristics of the produced thin films – What we have learned in 60 years and what is still unknown

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Quantitative molecular plating of large-area 242Pu targets with improved layer properties

Cited by 18 publications

References 19 publications

High-power radioactive targets as one of the key problems in further development of the research program on synthesis of new superheavy elements

High-power radioactive targets as one of the key problems in further development of the research program on synthesis of new superheavy elements

Measurement of the prompt fissionγ-ray spectrum of 242Pu

The process of molecular plating and the characteristics of the produced thin films – What we have learned in 60 years and what is still unknown

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Product

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Measurement of the prompt fissionγ-ray spectrum of ²⁴²Pu