Charge-transfer Devices in Spectroscopy PDF Download

Author: Jonathan V. Sweedler
Publisher: VCH Publishers
ISBN:
Category : Science
Languages : en
Pages : 432

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Author: Sweedler
Publisher:
ISBN: 9780471198109
Category :
Languages : en
Pages :

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Author: R. B. Bilhorn
Publisher:
ISBN:
Category :
Languages : en
Pages : 55

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Book Description
This article is the first in a two part series describing the operation, characteristics and application of a new class of solid -state multichannel UV-visible detectors. In this manuscript, Charge Transfer Devices (CTDs) are described. Detector characteristics pertinent to spectroscopic application including quantum efficiency, read noise, dark count rate and available formats are emphasized. Unique capabilities such as the ability to non-destructively read out the detector array, and the ability to alter the effective detector element size by a process called binning are described. CTDs with peak quantum efficiencies over 80% and significant responsivity over the wavelength range of 0.1nm to 1100nm are discussed. Exceptionally low dark count rates which allow integration times up to many hours and read noises more than two orders of magnitude lower than commercially available PDA detectors both contribute to the outstanding performance offered by these detectors. Keywords: Spectroscopic detectors; Charge transfer devices; Charge coupled device; Charge injection device; OPtical spectroscopy.

Author: P. M. Epperson
Publisher:
ISBN:
Category :
Languages : en
Pages : 33

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This article discusses the use of charge transfer devices (CTDs) in spectroscopy. This paper focuses on the spectroscopic applications of CTDs. A brief history of the development of these detectors and their application in scientific imaging is presented. The use of CTDs in spectroscopy is illustrated by four applications in challenging areas of ultraviolet-visible spectroscopy. Keywords: Multichannel techniques, Spectroscopic detectors, Charge transfer devices, Ultraviolet spectroscopy.

Author: A.J. Theuwissen
Publisher: Springer Science & Business Media
ISBN: 0306471191
Category : Science
Languages : en
Pages : 412

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Book Description
Solid-State Imaging with Charge-Coupled Devices covers the complete imaging chain: from the CCD's fundamentals to the applications. The book is divided into four main parts: the first deals with the basics of the charge-coupled devices in general. The second explains the imaging concepts in close relation to the classical television application. Part three goes into detail on new developments in the solid-state imaging world (light sensitivity, noise, device architectures), and part four rounds off the discussion with a variety of applications and the imager technology. The book is a reference work intended for all who deal with one or more aspects of solid- state imaging: the educational, scientific and industrial world. Graduates, undergraduates, engineers and technicians interested in the physics of solid-state imagers will find the answers to their imaging questions. Since each chapter concludes with a short section `Worth Memorizing', reading this short summary allows readers to continue their reading without missing the main message from the previous section.

Author: Jonathan V. Sweedler
Publisher:
ISBN:
Category :
Languages : en
Pages : 4

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Book Description
Recent advances in the capabilities of state-of-the-art array detectors have the potential to greatly improve analytical spectroscopy. The operational characteristics of several charge transfer device (CTD) detectors investigated in our laboratories show them to be highly suitable for application in UV-Vis molecular spectroscopy. The electro-optical characteristics of these devices including dynamic range, quantum efficiency, noise, resistance to blooming and lag are contrasted to photodiode arrays, vidicons, and photomultiplier tubes. With peak quantum efficiencies of 80%, read noises over two orders of magnitude lower than photodiode array detectors, and virtually no dark current, several of these CTD detectors are extremely well suited for luminescence spectroscopy. The performance of several spectroscopic systems which effectively use the various device geometries is presented. A linear concave grating spectrograph employing a 30-watt deuterium source and a CTD detector capable of extremely sensitive fluorescence measurements is described. Multichannel detectors, Molecular spectroscopy, Fluorescence detection, Luminescence detection, Charge transfer devices. (MJM).

Author: J. V. Sweedler
Publisher:
ISBN:
Category :
Languages : en
Pages : 32

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Book Description
This article is the first in a two-part series describing charge transfer devices (CTDs) -- a relatively new class of multichannel detectors for the ultraviolet to near-infrared spectral regions. An overview of the operation and the characteristics of CTDs relevant to analytical spectroscopy is presented. The sensitivity and dynamic range obtainable from CTD detectors are discussed and compared to the sensitivity and dynamic range obtainable from other spectroscopic detectors. Unique capabilities such as the ability to nondestructively readout the detector array and the ability to alter the effective detector element size using the process of binning are described. Detector array formats ranging from single elements to extremely large arrays, large photoactive areas, high quantum efficiencies, dark count rates allowing long integration times and low read noises all contribute to the outstanding performance and great flexibility offered by CTDs.

Author: R. B. Bilhorn
Publisher:
ISBN:
Category :
Languages : en
Pages : 48

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Book Description
This is the second article in a two part series describing the operation, performance characteristics, and spectroscopic application of Charge Transfer Devices (CTDs) in analytical chemistry. The first article in the series describes the new generation of integrating multichannel detectors, the charge also discusses the spectroscopically pertinent characteristics of these detectors and presents performance data for representative devices. This article covers three major topics related to the optimum use of integrating detectors in analytical spectroscopy. The advantages of employing integrating multichannel detectors in analytical spectroscopy rather than a single detector in a wavelength scanning system or an interferometer are discussed. Included are detector read noise considerations which have not been considered in previous performance comparisons. Keywords: Charge transfer devices, Charge coupled device, Charge injection device, Multichannel emission spectroscopy, Multichannel luminescence spectroscopy, Multichannel absorption spectroscopy.

Author: Ira Deyhimy
Publisher:
ISBN:
Category :
Languages : en
Pages : 38

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Book Description
There is considerable interest in the development of an imaging system within the wavelength range of 1.0 - 1.8 micrometers. The concept of charge coupled devices emerges as one of the viable candidates for such an application. The advantages of a non-MIS, Schottky barrier, buried channel CCD are discussed. A suitable material system for the 1.0 - 1.8 micrometers CCd application is the n-GaA1Sb/p+-GaSb hetero-system. Substantially improved surface morphology for this system is reported. This is achieved by the addition of As to the GaA1Sb layer, thus forming the quaternary: GaA1AsSb. Characterization of Schottky barriers to this material are reported. the Schottky barrier height is found to be>0.7 eV. (Author).

Author: Robert Thomas
Publisher: CRC Press
ISBN: 1000915514
Category : Science
Languages : en
Pages : 604

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Book Description
Written by one of the very first practitioners of ICP-MS, Practical Guide to ICP-MS and Other Atomic Spectroscopy Techniques: A Tutorial for Beginners presents ICP-MS in a completely novel and refreshing way. By comparing it with other complementary atomic spectroscopy (AS) techniques, it gives the trace element analysis user community a glimpse into why the technique was first developed and how the application landscape has defined its use today, 40 years after it was first commercialized in 1983. What’s new in the 4th edition: Updated chapters on the fundamental principles and applications of ICP-MS New chapters on complementary AS techniques including AA, AF, ICP-OES, MIP-AES, XRF, XRD, LIBS, LALI-TOFMS Strategies for reducing errors and contamination with plasma spectrochemical techniques Comparison of collision and reaction cells including triple/multi quad systems Novel approaches to sample digestion Alternative sample introduction accessories Comprehensive glossary of terms used in AS New vendor contact information The book is not only suited to novices and beginners, but also to more experienced analytical scientists who want to know more about recent ICP-MS developments, and where the technique might be heading in the future. Furthermore, it offers much needed guidance on how best to evaluate commercial AS instrumentation and what might be the best technique, based on your lab’s specific application demands.