A method for automatic identification of peaks in the presence of background and its application to spectrum analysis

Mariscotti, M.A.J.

doi:10.1016/0029-554x(67)90058-4

Cited by 313 publications

(92 citation statements)

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“…The third method, based on the algorithm developed by Mariscotti [61], allows the automatic search of the peaks, including the identification of a single line or a doublet of lines inside the peak, and a constrained fit of one or two Gaussians plus one polynomial to the peak and the surrounding channels, providing the number of photons on each line inside the peak.…”

Section: Hpge Detector Spectra Analysismentioning

confidence: 99%

“…The number of counts in the peaks was determined in three ways: (a) using the standard algorithm available from the CERN/TIS Ge system (Inter gamma Analysis), which has the advantage of being very robust; (b) using an algorithm used also for the rabbit analysis [61] (see Section 7.1), and (c) making a fit with an interactive software (PAW), in cases of ambiguity of results from (a) and (b). This allowed us to compare the methods, and gave us a way to correct problems and estimate the systematic errors.…”

Section: Peak Analysismentioning

confidence: 99%

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Results from the TARC experiment: spallation neutron phenomenology in lead and neutron-driven nuclear transmutation by adiabatic resonance crossing

Abánades

Aleixandre

Andriamonje

et al. 2002

Nuclear Instruments and Methods in Physics Research Section A:

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We summarize here the results of the TARC experiment whose main purpose is to demonstrate the possibility of using Adiabatic Resonance Crossing (ARC) to destroy efficiently Long-Lived Fission Fragments (LLFFs) in accelerator-driven systems and to validate a new simulation developed in the framework of the Energy Amplifier programme. An experimental set-up was installed in a CERN PS proton beam line to study how neutrons produced by spallation at relatively high energy ( E n ≥ 1 MeV) slow down quasi adiabatically with almost flat isolethargic energy distribution and reach the capture resonance energy of an element to be transmuted where they will have a high probability of being captured. Precision measurements of energy and space distributions of spallation neutrons (using 2.5 GeV/ c and 3.5 GeV/ c protons) slowing down in a 3.3 m × 3.3 m × 3 m lead volume and of neutron capture rates on LLFFs 99 Tc, 129 I, and several other elements were performed. An appropriate formalism and appropriate computational tools necessary for the analysis and understanding of the data were developed and validated in detail. Our direct experimental observation of ARC demonstrates the possibility to destroy, in a parasitic mode, outside the Energy Amplifier core, large amounts of 99 Tc or 129 I at a rate exceeding the production rate, thereby making it practical to reduce correspondingly the existing stockpile of LLFFs. In addition, TARC opens up new possibilities for radioactive isotope production as an alternative to nuclear reactors, in particular for medical applications, as well as new possibilities for neutron research and industrial applications.

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Section: Hpge Detector Spectra Analysismentioning

confidence: 99%

Section: Peak Analysismentioning

confidence: 99%

Results from the TARC experiment: spallation neutron phenomenology in lead and neutron-driven nuclear transmutation by adiabatic resonance crossing

Abánades

Aleixandre

Andriamonje

et al. 2002

Nuclear Instruments and Methods in Physics Research Section A:

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“…10 6 events was taken in a measurement lasting 12 h. Using three single-channel analysers an energy range from 0.5 MeV to 4.5 MeV in one branch and two intervals from 210 keV to 230 keV and from 0.6 MeV to 2.7 MeV in the other branch of the spectrometer were selected out. As a result, counts which do not carry any useful information were neglected because they are triggered by Compton events.…”

Section: Transition Energies and Yy Coincidence Spectramentioning

confidence: 99%

The γ-spectrum of 74Se accompanying the β-decay of 74Br

Göring¹,

Hartrott²

1970

Nuclear Physics A

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“…It is well known that taking the second derivative of a spectrum can sometimes reveal small peaks that might otherwise be missed. 6 We have found that the second derivative technique is also a powerful way to reveal the distortion in a spectrum produced by the emission of a massive neutrino.…”

Section: Aiandcu Foilsmentioning

confidence: 99%