Simulation of a discrete electrode detector array performance

Narayan, D.J.; Langstaff, D. P.; Birkinshaw, K.

doi:10.1016/0168-1176(95)04275-p

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…A computer model of the Aberystwth FPD includes all the above factors and has given good agreement with experimental results. 24 Curved channel MCPs25 provide a high gain from a single channel, thereby avoiding the need for a stack of two MCPs. An electron pulse of high gain emerging from a single channel would have a small diameter but would experience higher spaceÈcharge repulsion.…”

Section: Pulse Spreadingmentioning

confidence: 99%

Fundamentals of Focal Plane Detectors

Birkinshaw¹

1997

J. Mass Spectrom.

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Spatial dispersion of ions in one dimension is a well established means of analysing ion mass and focal plane detectors (FPDs) allow ions of a wide range of masses to be recorded simultaneously. This paper is concerned with the principles governing the performance of FPDs and the types of FPD available. It is focused on magnetic sector mass spectrometry but is relevant to all applications in which spatially dispersed particles can be detected using a microchannel plate electron multiplier, e.g. ions, photons of wavelength AE200 nm, electrons and energetic neutrals.Although it has proved possible to produce mass spectra with a high resolution, this has not been matched by an ability to detect them efficiently. Given that highly resolved spectra are available at the detector but are inaccessible efficiently, it is in the development of high-performance FPDs where there are enormous gains in efficiency to be achieved. Limitations of FPD performance of two fundamental types are discussed : the position of impact of an ion on the FPD cannot be measured exactly, and the upper and lower count rates of the FPD are both restricted. These limitations are not simply characterized but are sometimes determined by the electron multiplier stage, sometimes by the properties of the array and sometimes by the data acquisition system.

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Section: Pulse Spreadingmentioning

confidence: 99%

Fundamentals of Focal Plane Detectors

Birkinshaw¹

1997

J. Mass Spectrom.

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“…The capabilities of Denton's proposed detector would be very similar to those of conventional CTDs intended for MCP would eliminate the spatial broadening that occurs between the two MCPs. 53 optical imaging. First, it would offer very low dark current.…”

Section: Future Array Detectors For Sector Mass Spectrometrymentioning

confidence: 99%

Plasma-source sector mass spectrometry with array detection

Solyom¹,

Burgoyne²,

Hieftje³

1999

J. Anal. At. Spectrom.

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The combination of a mass spectrograph and an array detector possesses several potential advantages over more conventional methods of mass spectrometric analysis. The desirable features of this instrumental combination result from its most important quality, the ability to perform simultaneous analysis of an entire m/z range. These advantages include greater throughput (Felgett advantage), greater precision through isotope ratio determination, and superior analysis of fast, transient signals such as those produced by gas and liquid chromatographies, capillary electrophoresis, flow injection analysis, and laser ablation.Currently, two research groups are investigating the utility of incorporating ionization sources suitable for elemental analysis to mass spectrograph/array detector instrumentation. While progress has been made in both research groups, each project still has significant work ahead in order to realize fully the advantages of a sector mass spectrometer/array detector system. This review focuses primarily on the efforts of these two groups over approximately the last 6 years. However, basic discussions on several other topics including array detectors, the Mattauch-Herzog spectrograph geometry, and fundamental differences between simultaneous and scanning data acquisition are also presented.accelerating potential in order to generate the full spectrum.

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“…Capacitative cross coupling4apacitatively induced pulses on detector electrodes adjacent to central electrodes can cause peak broadening. All of these factors have been included in a simulation of the array module using Mathcad [41]. The space charge spreading of the electron pulse was calculated using the method of Vibrans 1421.…”

Section: Resolving Powermentioning

confidence: 99%

Detector arrays in spectroscopy

Birkinshaw

1996

International Reviews in Physical Chemistry

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Spatially dispersed spectra of ions, electrons or photons are traditionally measured by scanning the spectra across a narrow slit behind which is a detector. However, the efficiency increase offered by arrays of detectors is so large that their development is increasingly demanding the attention of spectrometer manufacturers. One-dimensional arrays of independent detectors (discrete electrode arrays) offer the highest data accumulation rate as detection can occur simultaneously at many sites, but a high resolution array of this type requires much associated electronics and this has limited the size and the market of such devices. The design and performance issues relating to discrete electrode arrays are discussed and a new high resolution array with all electronics integrated on a single silicon chip developed at Aberystwyth is described. A familiarity with silicon technology is not required by the reader. It is shown that integration brings not only advantages of scale but also of performance.

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Simulation of a discrete electrode detector array performance

Cited by 7 publications

References 8 publications

Fundamentals of Focal Plane Detectors

Fundamentals of Focal Plane Detectors

Plasma-source sector mass spectrometry with array detection

Detector arrays in spectroscopy

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