Application of a directly exposed self-scanning photodiode array as a linear position sensitive detector in a small-angle x-ray scattering instrument
Journal Article
·
· Rev. Sci. Instrum.; (United States)
A linear position sensitive small-angle x-ray detector has been developed which utilizes a directly exposed self-scanning photodiode array cooled to liquid nitrogen temperature to reduce fixed pattern noise. Direct exposure of the array improves the overall sensitivity to 8 keV photons by an order of magnitude over photoconversion techniques. With this improvement in sensitivity, the photodiode array has been effectively used to detect x rays from weakly scattering biological molecules in solution. The slit-like geometry of the photodector elements ideally matches that of a Kratky collimator employed with a low-flux x-ray source to enhance greatly the data collection rate. The detective quantum efficiency and stability of the detector have been determined while taking small-angle scattering measurements of proteins and the results are quantitatively applied to characterize the performance of the instrument.
- Research Organization:
- Division of Biological and Medical Research, Argonne National Laboratory, Argonne, Illinois 60439
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6901783
- Journal Information:
- Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 51:12; ISSN RSINA
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Technical Report
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Sun Dec 31 23:00:00 EST 1978
·
OSTI ID:6371687
Implementation of self-scanning photodiode arrays for scattering applications using conventional and intense x-ray sources
Journal Article
·
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· Trans. Am. Crystallogr. Assoc.; (United States)
·
OSTI ID:6751073
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·
Tue Dec 31 23:00:00 EST 1991
· Review of Scientific Instruments; (United States)
·
OSTI ID:5646276
Related Subjects
440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
DATA ACQUISITION
DETECTION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FLUIDS
IONIZING RADIATIONS
KEV RANGE
LIQUIDS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MIXTURES
NITROGEN
NOISE
NONMETALS
ORGANIC COMPOUNDS
PHOTODIODES
PHOTONS
POSITION SENSITIVE DETECTORS
PROTEINS
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
SCATTERING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SENSITIVITY
SOLUTIONS
X RADIATION
X-RAY DETECTION
47 OTHER INSTRUMENTATION
DATA ACQUISITION
DETECTION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FLUIDS
IONIZING RADIATIONS
KEV RANGE
LIQUIDS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MIXTURES
NITROGEN
NOISE
NONMETALS
ORGANIC COMPOUNDS
PHOTODIODES
PHOTONS
POSITION SENSITIVE DETECTORS
PROTEINS
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
SCATTERING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SENSITIVITY
SOLUTIONS
X RADIATION
X-RAY DETECTION