Crystal Structure Refinement of SrMoO4, SrWO4, CaMoO4, and BaWO4 by Neutron Diffraction

The crystal structures of CaMoO4, SrMoO4, SrWO4, and BaWO4 have been refined from neutron diffraction data taken in the (h0l)(h0l) and (hhl)(hhl) zones. Oxygen position refinement is started from the parameters proposed by Sillén and Nylander and results in an improvement of over an order of magnitude in the oxygen coordinates. A comparison of coordinates for the different compounds shows several systematic differences.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70371/2/JCPSA6-55-3-1093-1.pd

Phonon dispersion and phonon densities of states for ZnS and ZnTe

Neutron scattering data are reported for II–VI zincblende crystals, which are believed to be of sufficient precision to refine earlier ZnS ambiguities and to provide a basis for model fitting comparable to existing III‐V results. Valence shell models, including 9–12 parameters (VSM) and a variable shell charge extension (VCM), were fit to the data and used to generate phonon density of states and Debye temperatures. Very good fits to the neutron data were obtained, but no model was found that also predicts an accurate set of electric and mechanical constants. It is concluded that an unambiguous ionic charge Z cannot be assigned from the neutron results in either case.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/71346/2/JCPSA6-60-9-3613-1.pd

Polyethylene Frequency Spectrum from ``Warm''‐Neutron Scattering

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/71280/2/JCPSA6-42-12-4299-1.pd

Neutron Scattering in Normal and Deuterated Polyethylene

The one‐ and two‐phonon amplitude‐weighted directional frequency functions are calculated for normal and deuterated crystalline polyethylene. These results are compared to previously measured frequency spectra for stretch‐oriented normal polyethylene and to new measurements on deuterated polyethylene. In addition, the Debye‐Waller factors are calculated for oriented polyethylene and compared with elastic‐scattering data.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70915/2/JCPSA6-48-2-912-1.pd

Lattice dynamics of cubic zinc sulfide

Dispersion curves for the acoustic phonons have been measured in the [100], [111], and [110] directions by neutron scattering. The zone boundary frequencies have been used to reassign multi-phonon events previously reported from infrared and Raman spectra. The data are compared with a preliminary six-parameter valence force model.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/32879/1/0000257.pd

A Reactor Core Modification to Enhance Beams for Thermal Neutron Spectrometers

Prepared for Presentation at the 1965 Annual Meeting of the American Nuclear Society, June 21 - 24 at Gatlinburg, Tennesseehttp://deepblue.lib.umich.edu/bitstream/2027.42/86070/1/MMPP Bullock-Daniels-King 1965.PDF2

Proton-Recoil Spectrometer for Fast Neutron Spectra

This manuscript was published as Transactions of the American Nuclear Society, 8, 73 (June 1965)http://deepblue.lib.umich.edu/bitstream/2027.42/86077/1/MMPP Harris-Knoll-King 1965.PDF15

The influence of localized stresses and strains on the iodine scc behavior of Zircaloy-2 tubing

The segmented expanding mandrel test is modified to provide additional information on the localized stresses and strains during ramp-hold tests. A chamfered specimen is designed with four flats on the outer diameter for the purpose of creating sectors of variable wall thickness which establishes a more nearly plane strain state in the thinnest-gauge sections. Ramp-hold tests conducted in 40 MPa of iodine at 325[deg]C show that at a measured diametral strain of 0.8%, chamfered specimens fail while regular tubing specimens require diametral strains of 2% or greater for failure. Calculations made with a two-dimensional, finite elements code show that at a measured diametral strain of 0.8%, the local strains in the clad ID over the segment interfaces are nearly identical for the regular and chamfered samples while the local stress in the chamfered sample is 15% greater. Results suggest that the smaller diametral failure strain of the chamfered specimen at low measured diametral strains is mainly due to its near plane strain condition and the higher hoop stresses resulting therefrom.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/25716/1/0000273.pd

The Ursinus Weekly, January 15, 1962

Shadowy figure of Ursinus\u27 past publishes volume of 66 poems • Dr. Snyder, Forum speaker, outlines seven strong forces in Africa today • Spontaneous fun object of new social committee • Prof casts critical eye over Lantern; Discovers sound creative instincts • Bursting water pipe sends Alumni Office to 620 Main • Student teachers\u27 light-hearted talk explains what\u27s not in the Ed. book • Best-dressed co-ed sought by Weekly • Shares of the pecuniary pie • Pre-medders hear about corneal transplant work • Editorial: Appeal of wrestling • Ursinus in the past • Letters to the editor • Obituary for a timid intellectual • Dryfoos sets two Ursinus cage marks; Dean ties record with quick pin • Pair of heartbreaking losses catch grapplers last week • Basketball begins • Frymen flounder; Lose to PMC, 92-80; Drop thriller to Swarthmore, 89 to 85 • Greek gleaningshttps://digitalcommons.ursinus.edu/weekly/1309/thumbnail.jp