Performance of resistive-charge position sensitive detectors for RBS/Channeling applications

Miranda, P.; Wahl, Ulrich; Catarino, N.; Silva, Manuel Ribeiro da; Alves, E.

doi:10.1016/j.nima.2014.05.062

Cited by 5 publications

(6 citation statements)

References 24 publications

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“…The major types of PSDs that have been used so far in ion beam and emission channeling experiments, are Si resistive charge division detectors [22,24,[34][35], ionization chambers [31][32], Si pad detectors [39][40], multi-channel plates [23,[26][27][28][29][30], as well as Timepix pixel detectors [25]. Each detector system has specific characteristics that influence the observed channeling patterns and need to be accounted for in the data analysis procedures.…”

Section: Emission Channeling Methodologymentioning

confidence: 99%

“…Taking into account the position resolution of a specific detector, different choices can be made on how to bin the angular yield data into a histogram during data taking and/or analysis. For example, while the position signal from a resistive charge division detector is a continuous variable, after digitalization it is often sorted into 64×64 or 128×128 bins since spatial resolution is usually around several per cent [22,24,35]. This provides the advantage of having a high number of counts per bin without significantly losing position resolution.…”

Section: Emission Channeling Methodologymentioning

confidence: 99%

“…In this case, while the ingoing angle is kept fixed, the 2D patterns of outgoing particles can be conveniently recorded with the help of position-sensitive detectors (PSDs). While this approach is also not common, applications have been reported in the literature using RBS/C [22][23][24][25], Medium Energy Ion Scattering (MEIS) [26][27][28][29][30] or Elastic Recoil Detection Analysis (ERDA) [31][32].…”

Section: Motivation: the Use Of Two-dimensional Patterns In Channeling Measurementsmentioning

confidence: 99%

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A generalized fitting tool for analysis of two-dimensional channeling patterns

David-Bosne

Wahl

Correia

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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The acquisition of two-dimensional (2D) channeling patterns is gaining increased popularity within the ion beam community. However, with the exception of emission channeling experiments for the lattice location of radioactive impurities, quantitative analysis of such patterns is rarely found. We present a general description of the statistical data analysis methodology for 2D channeling patterns, which consists of comparing experimental data by means of a fit procedure to theoretical yield distributions. The developed software allows for chi-square or maximum likelihood-based fits, optimizing the orientation of the theoretical vs the experimental pattern, as well as the best choice of random level, and providing fractions for the contributions from several theoretical patterns related to different lattice sites. Optionally also the angular resolution can be used as a fit parameter. Use of the software is illustrated by examples of electron emission channeling from 27 Mg in GaN, as well as 4 He RBS channeling from Ge.

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Section: Emission Channeling Methodologymentioning

confidence: 99%

Section: Emission Channeling Methodologymentioning

confidence: 99%

Section: Motivation: the Use Of Two-dimensional Patterns In Channeling Measurementsmentioning

confidence: 99%

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A generalized fitting tool for analysis of two-dimensional channeling patterns

David-Bosne

Wahl

Correia

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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“…However, the relatively limited energy resolution for MeV a detection which was available in those days largely limited their use to emission channeling (see below), rather than RBS/ channeling [31][32][33]. In a joint effort with nuclear scientists, there has been renewed interest recently in using both pixel-based detectors and resistive charge division photodiodes [34], hopefully paving the way towards easier and high-throughput blocking/channeling studies with a good energy resolution.…”

Section: Efficiently Observing Channelingmentioning

confidence: 99%

50 years of ion channeling in materials science

Vantomme

2016

Nuclear Instruments and Methods in Physics Research Section B:

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In the early days of ion beam analysis, i.e. the early 60s, channeling was discovered and brought to maturity via a combined effort in experimental, computational and theoretical research. It was soon realized that the probability for nuclear interaction (such as nuclear scattering, nuclear reactions, ionization followed by X-ray emission. . .) would significantly decrease when steering the ion beam along a crystallographic direction of a single crystal. Hence, this effect would be optimally suited to investigate a wide range of materials properties related to their crystal structure, such as defects, elastic strain, the lattice site of impurities, as well as phonon-related properties.In this paper, I will briefly review some of the pioneering work, which led to the discovery and theoretical understanding of ion channeling. Subsequently, a number of applications will be discussed where the strength of the ion beam analysis technique allows deducing information which is often hardly (or not) attainable by other techniques. Throughout the paper, I will reflect on the future of channeling in materials research, and pay special attention to potential pitfalls, challenges and opportunities.

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“…Table 6 summarizes the characteristics of the different optical methods of Fig. 28: Regression line for the sensors integration measurements (Lang et al, 1992) Beer's Law 940 mm 10 mm 0.01% Optical lever (Liu et al, 2006) Plane mirrors 850 nm 4 nm 10 nm PSD (Miranda et al, 2014) Resistive charge division 100 mm 72 µm 500 µm Photoelectric incremental encoder (Israel et al, 2003) Direct traceability 270 mm 27 nm 2 µm Optical encoder (Kao and Lu, 2005) Fractional talbot effect 600 mm 0.1 µm 0.2 µm displacement solutions. The optical potentiometer provided a large travelling range and a high accuracy, however the resolution was larger than our proposed transducer by 8 mm.…”

Section: Displacement Measurements Based On the Integration Of Linescmentioning

confidence: 99%

Development of a Hybrid Ultrasonic and Optical Sensing for Precision Linear Displacement Measurement

Alsayed¹,

Mahadi²,

Waykok³

et al. 2015

J. of Applied Sciences

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This study presents a proposed technique for displacement measurement in linear horizontal motion. The measurement system consists of a lines can sensor with built in illumination system, grating scale and an ultrasonic sensor. Once, the linescan transducer scans the grating scale optically, the displacement of the transducer is measured based on pixel shifting method. Additionally, the role of the ultrasonic sensor is to add the reference position for the linescan transducer and the current position in case of missing the position. The linescan transducer design includes; the illumination source and the division of the grating scale. The accuracy of the measurements is compared to white and infrared lights. After that, the comparison is built based on three scale divisions which are 0.5, 1 and 2 mm. Finally, the accuracy also is compared to different travelling ranges of motion. The displacement measurements of the proposed transducer is evaluated comparatively to Optiv Light Measurement (OLM) device.

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Performance of resistive-charge position sensitive detectors for RBS/Channeling applications

Cited by 5 publications

References 24 publications

A generalized fitting tool for analysis of two-dimensional channeling patterns

A generalized fitting tool for analysis of two-dimensional channeling patterns

50 years of ion channeling in materials science

Development of a Hybrid Ultrasonic and Optical Sensing for Precision Linear Displacement Measurement

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