Fabrication of $^{108}$Cd target for the astrophysical p-process studies

The detailed process of preparing enriched $^{108}$Cd targets on mylar and copper backing using the vacuum evaporation technique is described. These targets were employed in an experiment to measure the proton capture cross-section at energies significantly below the Coulomb barrier, for the astroph...

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Bibliographic Details
Main Authors Saha, Sukhendu, Paul, Mousri, Sahoo, Lalit Kumar, Basak, Dipali, Bar, Tanmoy, Datta, Jagannath, Dasgupta, Sandipan, Reddy, G. L. N, Basu, Chinmay
Format Journal Article
LanguageEnglish
Published 19.01.2024
Subjects
Physics - Instrumentation and Detectors
Physics - Nuclear Experiment
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Summary:The detailed process of preparing enriched $^{108}$Cd targets on mylar and copper backing using the vacuum evaporation technique is described. These targets were employed in an experiment to measure the proton capture cross-section at energies significantly below the Coulomb barrier, for the astrophysical p-process studies. Due to the low melting point and high vapor pressure of cadmium, some adjustments were implemented in the Telemark multipocket e-beam setup. The target thickness was determined through the measurement of alpha particle energy loss from a triple alpha source and also by RBS measurements. The thickness of the $^{108}$Cd films varies between 290 to 660 $\mu$g/cm$^2$, with a non-uniformity of approximately 10$\%$. X-ray Photoelectron Spectroscopy (XPS) and X-ray Fluorescence (XRF) analyses were conducted to examine the presence of impurities and to assess surface morphology, phase, and chemical composition.
DOI:10.48550/arxiv.2402.16856