Engineering topics

Blouke, Morley

Publications and source records attributed to Blouke, Morley.

3 records

NASA NTRS1991

A high radiometric performance CCD for the third generation stratospheric aerosol and gas experiment

A third-generation SAGE instrument is about to be designed as part of the NASA Earth Observational System. Previous instruments have used individual diodes as detectors. The new instrument will use a custom design CCD to dramatically enhance the study of the gas and aerosol components of the upper atmosphere. The CCD is a 3 by 400 imaging array that has a single serial register and an exposure control drain. It will be used at the focal plane of a spectrometer covering the spectral range from 288 nm to 1.02 micron.

Delamere, Alan↗

NASA NTRS1990

Quantum efficiency measurements of Tektronix backside thinned CCDs

Results are presented of a program in progress to produce CCDs with high stable quantum efficiency (QE). Measurements made at 253.7 nm over a six-month period showed no significant QE difference between two CCDs manufactured in 1989 and one manufactured in 1988. QE improvement by the addition of a two-layer antireflection coating is about threefold at 400 nm.

Delamere, Alan↗

NASA NTRS1990

Radiation test results on TK 1024 CCDs

Results are presented from tests on TK 1024 CCDs with a multipinned phase (MPP) implant built into an experiental mask set. The average dark current as a function of temperature increased by a factor of about 3 for the 5 krads of gammas, which is a 10-fold increase for the extra 2 krads of protons. Histograms of the dark current show two types of dark current, an average level change, and dark current spikes.

Delamere, Alan↗