&lt;title&gt;Texas Instruments (TI) 800X800 Charge-Coupled Device (CCD) Image Sensor&lt;/title&gt;

Blouke, Morley M.; Janesick, James R.; Hall, Joseph E.; Cowens, M. W.

doi:10.1117/12.965830

Cited by 14 publications

(5 citation statements)

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“…The mission was launched on the Discovery shuttle on 7 April 1993. This WLC was built with a single serrated external occulter (Fort et al, 1978) and a Charged Coupled Device (CCD) for the detector (Blouke et al, 1981). The cadence of image acquisition was very good, and it was able to acquire simultaneous observations of a CME in WL and Ly-α.…”

Section: Spartan 201-1 White-light Coronagraphmentioning

confidence: 99%

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The evolution of our understanding of coronal mass ejections

Howard,

Vourlidas,

Stenborg

2023

Front. Astron. Space Sci.

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The unexpected observation of a sudden expulsion of mass through the solar corona in 1971 opened up a new field of interest in solar and stellar physics. The discovery came from a white-light coronagraph, which creates an artificial eclipse of the Sun, enabling the viewing of the faint glow from the corona. This observation was followed by many more observations and new missions. In the five decades since that discovery, there have been five generations of coronagraphs, each with improved performance, enabling continued understanding of the phenomena, which became known as Coronal Mass Ejection (CME) events. The conceptualization of the CME structure evolved from the elementary 2-dimensional loop to basically two fundamental types: a 3-dimensional magnetic flux rope and a non-magnetic eruption from pseudo-streamers. The former persists to 1 AU and beyond, whereas the latter dissipates by 15 R⊙. Historically, most of the studies have been devoted to understanding the CME large-scale structure and its associations, but this is changing. With the advent of the fourth and fifth coronagraph generations, more attention is being devoted to the their internal structure and initiation mechanisms. In this review, we describe the evolution of CME observations and their associations with other solar and heliospheric phenomena, with one of the more important correlations being its recognition as a driver of space-weather. We conclude with a brief overview of open questions and present some ideas for future observations.

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Section: Spartan 201-1 White-light Coronagraphmentioning

confidence: 99%

“…The detectors for LASCO and EIT are 1Kx1K charge coupled devices (CCD; Blouke et al, 1981;Janesick and Blouke, 1995) manufactured from the same lots. The LASCO CCDs were frontside detectors, meaning that the light was passing through the electronic structures deposited on the silicon wafer.…”

Section: Spartan 201-1 White-light Coronagraphmentioning

confidence: 99%

The evolution of our understanding of coronal mass ejections

Howard,

Vourlidas,

Stenborg

2023

Front. Astron. Space Sci.

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“…In 1984, during system-level thermal vacuum testing of the WF/PC instrument, the coronene-coated CCDs developed severe instabilities caused by defects in the CCD surface [4][5][6]. These defects trapped positive charge at the Si-SiO2 interface and depleted the surface, leading to low QE as some photogenerated charge was trapped in the backside potential well.…”

Section: Quantum Efficiency Hysteresis In Back-illuminated Ccdsmentioning

confidence: 99%

2D-doped silicon detectors for UV/optical/NIR and x-ray astronomy

Hoenk

Jewell

Kyne

et al. 2022

X-Ray, Optical, and Infrared Detectors for Astronomy X

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In this paper we review the physics and performance of back-illuminated CCDs. Models of back-illuminated CCDs are used to derive requirements for stable, strong surface passivation in space-relevant environments. Models and data are used to compare state-of-the-art surface passivation methods with 2D-doped surfaces. MBE growth of 2D-doped silicon on back-illuminated CCDs and CMOS image sensors enables near 100% charge collection efficiency with exceptional stability in space and other harsh environments. Lifetime tests performed on 2D-doped CMOS image sensors using pulsed DUV lasers have demonstrated the unique stability of 2D-doped detectors against high levels of radiation-induced surface damage. The insensitivity of 2D-doped detectors to Si-SiO2 traps has facilitated the development of a variety of coatings and filters with science-enabling capabilities for NASA instruments and missions in the far and near ultraviolet spectral range. We discuss the status and goals of a strategic partnership between JPL and Teledyne e2v for the certification of 2Ddoping processes, and report initial results from our collaboration.

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“…Extremely low readout noise levels of the order of eight electrons rms have been demonstrated making these devices highly suitable for low-light-level measurements (cf. Blouke et al 1981;Gunn and Westphal 1981). Some aspects of the performance characteristics require attention when these chips are used for optical spectroscopy.…”

Section: Interface Potentialmentioning

confidence: 99%