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Search Publications by: Julia Scherschligt (Fed)

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Displaying 76 - 90 of 90

How to Build a Vacuum Spring-Transport Package for Spinning Rotor Gauges

April 7, 2016
Author(s)
James A. Fedchak, Julia K. Scherschligt, Makfir Sefa
The spinning rotor gauge (SRG) is a high-vacuum gauge often used to as a secondary or transfer standard for vacuum pressures in the range of 1.0 × 10-4 Pa to 1.0 Pa. In this application, the gauges are frequently transported to laboratories for calibration

A New Experiment for Determining Evaporation and Condensation Coefficients of Cryogenic Propellants

March 1, 2016
Author(s)
Kishan Bellur, E F. Medici, M Kulshreshtha, V Konduru, D Tyrewala, A Tamilarasan, J McQuillen, Juscelino Leao, Daniel S. Hussey, David L. Jacobson, Julia Scherschligt, J Hermanson, C Choi, J Allen
Passive and active technologies have been used to control propellant boil-o , but the current state of understanding of cryogenic evaporation and condensation in microgravity is insucient for designing large cryogenic depots critical to the long-term

Building a Spring-Transport Mechanism for Spinning Rotor Gauges

April 3, 2015
Author(s)
James A. Fedchak, Julia K. Scherschligt, Makfir Sefa, Nick Phandinh
Spinning rotor gauges (SRGs) are widely used as transfer standards in inter-laboratory comparisons and as secondary standards by calibration laboratories. In both of these applications, it is necessary to ship the SRG for calibration, often internationally

Safety Interlock and Vent System to Alleviate Potentially Dangerous Ice Blockage of Top-loading Cryostat Sample Sticks

August 1, 2013
Author(s)
S. Pangelis, S. R. Olsen, Julia Scherschligt, Juscelino Leao, S. A. Pullen, Daniel C Dender, J. R. Hester, P. Imperia
A combined solution is presented for minimising the safety hazards associated with closed cycle cryostats described in Swainson & Cranswick (2010) J. Appl. Cryst. 43, 206-210. The initial solution is to install a vent tube witn one open end deep inside the

Thermal Equilibration of Samples for Neutron Scattering

January 17, 2013
Author(s)
Tobias K Herman, Julia Scherschligt, Sarah Cunegunda Parks
Temperature relaxation and equilibration of samples for neutron scattering was investigated in a selection of samples and sample cells within the range of 5-300K. A sample model was developed that relates thermal relaxation time constants to material

A Wide Angle Neutron Spin Filter System Using Polarized 3He

October 16, 2010
Author(s)
Changbo Fu, Thomas R. Gentile, Wangchun Chen, Ross Erwin, Shannon M. Watson, Collin L. Broholm, Jose Rodriguez Rivera, Julia Scherschligt, G L. Jones
Polarized 3He neutron spin filters can operate over a wide neutron energy range and provide a large angular acceptance. A compact 3He neutron spin filter system has been developed for the Multi Axis Crystal Spectrometer at the NIST Center for Neutron
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