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Title: Enhancement of the Microscopy Facilities at the NSLS X1A Beamline

Abstract

As originally proposed, the authors constructed a new Scanning Transmission X-ray Microscope, STXM IV. The design and construction was led by Chris Jacobsen, and involved graduate students Michael Feser, Mary Carlucci-Dayton and Tobias Beetz. This microscope has the following new features: It has a new and improved high resolution scanning stage that should make it possible to perform higher resolution imaging without distortions. Preliminary results indicate that the stage performs as designed. It has an enclosure that can be evacuated and backfilled with helium. This makes it possible to perform imaging in the neighborhood of the nitrogen and oxygen edges without interference from residual air. It has a motorized detector stage for easy interchange of detectors and alignment microscope. We expect to use this to align the new segmented detector which makes it possible to perform brightfield and dark field microscopy simultaneously, and to record images in differential phase contrast as well. The microscope is located upstream of cryoSTXM, the instrument we use to examine specimens in a frozen hydrated state. The design of STXM IV is such that it makes it quick and easy to switch between STXM IV and cryo-STXM operations and vice versa. IEEE488 based control electronicsmore » provides multiple channels of data collection. The microscope is run from a LINUX PC with all new software, developed in-house. The stages for the zone plate and the order sorting aperture (OSA) have kinematic mounts. This way different sets of zone plates (optimized for different wavelengths and working distances) can be exchanged without the need for complete realignment of the instrument. The enclosure can be used as a glove-box, making it possible to examine specimens which require anaerobic handling.« less

Authors:
Publication Date:
Research Org.:
State University of New York, Stony Brook, NY (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
761180
DOE Contract Number:  
FG02-96ER14655
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 31 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DESIGN; HELIUM; MICROSCOPES; MICROSCOPY; NITROGEN; OXYGEN; PROGRESS REPORT; RESOLUTION; WAVELENGTHS

Citation Formats

Jacobson, Chris. Enhancement of the Microscopy Facilities at the NSLS X1A Beamline. United States: N. p., 1999. Web. doi:10.2172/761180.
Jacobson, Chris. Enhancement of the Microscopy Facilities at the NSLS X1A Beamline. United States. doi:10.2172/761180.
Jacobson, Chris. Tue . "Enhancement of the Microscopy Facilities at the NSLS X1A Beamline". United States. doi:10.2172/761180. https://www.osti.gov/servlets/purl/761180.
@article{osti_761180,
title = {Enhancement of the Microscopy Facilities at the NSLS X1A Beamline},
author = {Jacobson, Chris},
abstractNote = {As originally proposed, the authors constructed a new Scanning Transmission X-ray Microscope, STXM IV. The design and construction was led by Chris Jacobsen, and involved graduate students Michael Feser, Mary Carlucci-Dayton and Tobias Beetz. This microscope has the following new features: It has a new and improved high resolution scanning stage that should make it possible to perform higher resolution imaging without distortions. Preliminary results indicate that the stage performs as designed. It has an enclosure that can be evacuated and backfilled with helium. This makes it possible to perform imaging in the neighborhood of the nitrogen and oxygen edges without interference from residual air. It has a motorized detector stage for easy interchange of detectors and alignment microscope. We expect to use this to align the new segmented detector which makes it possible to perform brightfield and dark field microscopy simultaneously, and to record images in differential phase contrast as well. The microscope is located upstream of cryoSTXM, the instrument we use to examine specimens in a frozen hydrated state. The design of STXM IV is such that it makes it quick and easy to switch between STXM IV and cryo-STXM operations and vice versa. IEEE488 based control electronics provides multiple channels of data collection. The microscope is run from a LINUX PC with all new software, developed in-house. The stages for the zone plate and the order sorting aperture (OSA) have kinematic mounts. This way different sets of zone plates (optimized for different wavelengths and working distances) can be exchanged without the need for complete realignment of the instrument. The enclosure can be used as a glove-box, making it possible to examine specimens which require anaerobic handling.},
doi = {10.2172/761180},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}