Production and characterization of thin, self-supporting Si foils for use as targets in radioactive beam experiments

Journal Article · 11 December 2019 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI: https://doi.org/10.1016/j.nima.2019.163267 · OSTI ID:1646995

Johnstone, J. E. ^[1]; Hudan, S. ^[2]; Folluo, C. ^[2]; Werke, T. ^[3]; DeYoung, P. A. ^[4]; deSouza, Romualdo  ^[2]

---

1. Indiana Univ., Bloomington, IN (United States); Indiana University
2. Indiana Univ., Bloomington, IN (United States)
3. Indiana Univ., Bloomington, IN (United States); Rock Island Arsenal, Rock Island, IL (United States)
4. VanderWerfHall, Holland, MI (United States)

Development of thin, self-supporting silicon foils (both natural and isotopically-enriched) for use as targets in reaction studies with radioactive beams is detailed. Foils with a thickness of ~220 μg/cm² were produced using vapor deposition and were floated onto aluminum frames with 10–15 mm diameter holes. During their production, the foil thickness was measured using a quartz crystal monitor. Subsequently, the foil thickness was characterized by particle energy loss measurements and Rutherford backscattering (RBS). These measurements demonstrated that the thickness could be determined to within a 0.5% uncertainty. The elemental purity of the foils was assessed using RBS and X-ray photoelectron spectroscopy. Lastly, this analysis demonstrated that the foils have 87%–90% silicon abundance.

• Research Organization: Indiana Univ., Bloomington, IN (United States)
• Sponsoring Organization: National Science Foundation; USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: FG02-88ER40404
• OSTI ID: 1646995
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 953; ISSN 0168-9002
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English