ABSTRACT
We have built a sample holder (called a center stick or sample stick) for performing simultaneous Raman and neutron vibrational spectroscopy on samples of material at the VISION neutron vibrational spectrometer of the Spallation Neutron Source at Oak Ridge National Laboratory. This equipment holds material samples in the neutron beam within the cryogenic environment of the VISION spectrometer, allowing for samples to be studied at temperatures as low as 5 K. It also provides the capability for gas to be loaded to or evacuated from the sample while it is loaded at VISION. The optical components for directing and filtering light are located within the cryogenic volume, in physical proximity to the sample. We describe the construction of this sample holder and discuss our first measurements of simultaneous Raman and neutron vibrational spectra. The samples that we report on were of 4-nitrophenol at a temperature of 20 K and of cryogenic hydrogen of a number of different orthohydrogen fractions.
ABSTRACT
Teaching of any kind can be a rewarding career option for a perioperative nurse. Whether it is teaching patients, the public, other nurses, surgical technologists, or ancillary staff members, the result can still be the same: a feeling of satisfaction in doing an important job. This article explores one nurse's perioperative career and examines how that career evolved into the expanded role of clinical instructor for surgical technology at the college level.
