Development of a high mass-resolution TOF-ERDA system for a wide mass range

Hong, Won G.; Hayakawa, Shinjiro; Maeda, K.; Fukuda, Satoshi; Yanokura, Minoru; Aratani, Michi; Kimura, K.; Gohshi, Yohichi; Tanihata, I.

doi:10.1016/s0168-583x(97)00081-5

Cited by 21 publications

(10 citation statements)

References 14 publications

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“…The coincident data is then collected directly into a 2-dimensional histogram. More advanced systems save the coincidence data in a list-mode where coincident ToF and energy information pairs are written into a file sequentially [3]. Commercial multi parameter data acquisition systems that can directly recognize coincident data from several detector channels are also used [4].…”

Section: Introductionmentioning

confidence: 99%

A simple timestamping data acquisition system for ToF-ERDA

Rossi

Rahkila

Kettunen

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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A new data acquisition system, ToF-DAQ, has been developed for a ToF-ERDA telescope and other ToF-E and ToF-ToF measurement systems. ToF-DAQ combines an analogue electronics front-end to asynchronous time stamped data acquisition by means of a FPGA device. Coincidences are sought solely in software based on the timestamps. Timestamping offers more options for data analysis as coincidence events can be built also in offline analysis. The system utilises a National Instruments R-series FPGA device and a Windows PC as a host computer. Both the FPGA code and the host software were developed using the National Instruments LabVIEW graphical programming environment. Up to eight NIM ADCs can be handled by a single FPGA. The host computer and the FPGA can process total continuous count rates of over 750000 counts/s with a timestamping resolution of 8.33 ns.

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Section: Introductionmentioning

confidence: 99%

A simple timestamping data acquisition system for ToF-ERDA

Rossi

Rahkila

Kettunen

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…Of the vast number of surface and sub-surface analysis techniques available to material scientists, nuclear techniques can readily offer quantitative and standard-free analysis with high resolution depth profiling not easily attainable by other means [4][5][6]. Heavy Ion Elastic Recoil Detection Analysis (Heavy Ion ERDA) is one of the latest nuclear analytical techniques whose development has been spurred on mostly by the need for simultaneous analysis of light elements in heavy element matrices [4,7,8]. When built with a mass dispersive recoil detector system, it is possible with Heavy Ion ERDA to obtain depth profiles of all target elements present in a layer structure in a single measurement.…”

Section: Introductionmentioning

confidence: 99%

The new Heavy Ion ERDA set up at iThemba LABS Gauteng: Multilayer thin film depth profiling using direct calculation and Monte Carlo simulation codes

Msimanga

Wamwangi

Comrie

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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We report here on the recently built Heavy Ion ERDA set up at iThemba LABS Gauteng; describing a typ-ical application in the study of interfacial reactions in an Al 2 O 3 -Ti ceramic-metal multilayer structure annealed in vacuum at 800 °C for 2 h. Depth profile extraction was found to be best obtained through combined use of direct calculation and Monte Carlo simulation codes as opposed to using just either of the methods. The obtained profile suggests a case of the Kirkendall effect, whereupon the inter-diffu-sion between the metal and the ceramic was largely due to the faster diffusion of the metal into the amor-phous ceramic than diffusion of the ceramic elements into the metallic layer.

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“…Besides, the energy straggling of recoil ions in the stopper foil deteriorates depth resolution. A time-of-flight (TOF) ERDA is one of the promising methods for the measurements with mass separation of recoil particles and with better depth resolution [1][2][3][4]. Simultaneous measurements of velocity and energy enable the determination of the mass of recoil particle.…”

Section: Introductionmentioning

confidence: 99%

“…Since the stopper foil is not used, depth resolution is superior to that of conventional ERDA. A number of measurements by means of TOF-ERDA were reported, and heavy ions were used as incident beams in most cases [1][2][3][4]. One of the advantages of TOF-ERDA using a heavy ion beam is that good depth resolution can be obtained.…”

Section: Introductionmentioning

confidence: 99%