Automatic energy calibration algorithm for an RBS setup

Journal Article · Mon May 06 00:00:00 EDT 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4804103· OSTI ID:22116034

Silva, Tiago F.; Moro, Marcos V.; Added, Nemitala; Rizzutto, Marcia A.; Tabacniks, Manfredo H. ^[1]

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1. Instituto de Fisica da Universidade de Sao Paulo, C.P. 66318, 05315-970 Sao Paulo, SP (Brazil)

This work describes a computer algorithm for automatic extraction of the energy calibration parameters from a Rutherford Back-Scattering Spectroscopy (RBS) spectrum. Parameters like the electronic gain, electronic offset and detection resolution (FWHM) of a RBS setup are usually determined using a standard sample. In our case, the standard sample comprises of a multi-elemental thin film made of a mixture of Ti-Al-Ta that is analyzed at the beginning of each run at defined beam energy. A computer program has been developed to extract automatically the calibration parameters from the spectrum of the standard sample. The code evaluates the first derivative of the energy spectrum, locates the trailing edges of the Al, Ti and Ta peaks and fits a first order polynomial for the energy-channel relation. The detection resolution is determined fitting the convolution of a pre-calculated theoretical spectrum. To test the code, data of two years have been analyzed and the results compared with the manual calculations done previously, obtaining good agreement.

• OSTI ID: 22116034
• Journal Information: AIP Conference Proceedings, Vol. 1529, Issue 1; Conference: 35. Brazilian workshop on nuclear physics, Sao Paulo (Brazil), 2-6 Sep 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALGORITHMS
ALUMINIUM
CALIBRATION
COMPARATIVE EVALUATIONS
COMPUTER CALCULATIONS
COMPUTER CODES
CRYSTAL STRUCTURE
ENERGY SPECTRA
MIXTURES
POLYNOMIALS
RUTHERFORD BACKSCATTERING SPECTROSCOPY
TANTALUM
THIN FILMS
TITANIUM