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Articles 1  22 of 22
FullText Articles in Physics
Comparison Of Suppression Across Frequencies, Linda M. Thibodeau, Marc A. Fagelson
Comparison Of Suppression Across Frequencies, Linda M. Thibodeau, Marc A. Fagelson
Marc A. Fagelson
Selected Topics On Dynamical Symmetry Breaking, Tonnis Ter Veldhuis
Selected Topics On Dynamical Symmetry Breaking, Tonnis Ter Veldhuis
Tonnis ter Veldhuis
No abstract provided.
Transverse Form Factors Of 117sn, H Baghaei, J Dubach, M B. Frodyma, R S. Hicks, R A. Miskimen, Gerald Alvin Peterson
Transverse Form Factors Of 117sn, H Baghaei, J Dubach, M B. Frodyma, R S. Hicks, R A. Miskimen, Gerald Alvin Peterson
Gerald Alvin Peterson
Transverse elastic and inelastic form factors for lowlying levels in 117Sn have been measured by 180° electron scattering in the momentum transfer range qeff=1.1–2.4 fm1. The simple independentparticle model fails to account for these data, predicting form factors that are much too large. In better quantitative agreement with the data are the results of more detailed calculations that allow for configuration mixing of valence nucleons, as well as firstorder core polarization. As in the similar case of 205Tl, these calculations successfully predict the presence of a deep diffraction minimum observed in the intermediate q region of ...
Apparent And True Feature Heights In Force Microscopy, Nancy Burnham
Apparent And True Feature Heights In Force Microscopy, Nancy Burnham
Nancy A. Burnham
In a force microscope, the stiffness of the cantilever beam convolutes with the tip‐sample interaction stiffness to influence the data in a systematic way. The analysis presented here relates the measured feature height to the true feature height in the variable force, constant force, and constant force gradient modes of operation. In this way, one can understand previously published data: the enhanced measured atomic corrugation observed in high resolution force microscopy images, its increase with load, and the improved resolution of lateral force images. The correct interaction stiffness can be obtained for use in surface force and mechanical properties ...
GroundState Magnetization Density Of 89y, J E. Wise, J R. Calarco, J P. Connelly, S A. Fayans, F W. Hersman, J H. Heisenberg, R S. Hicks, W Kim, T E. Milliman, R A. Miskimen, Gerald Alvin Peterson
GroundState Magnetization Density Of 89y, J E. Wise, J R. Calarco, J P. Connelly, S A. Fayans, F W. Hersman, J H. Heisenberg, R S. Hicks, W Kim, T E. Milliman, R A. Miskimen, Gerald Alvin Peterson
Gerald Alvin Peterson
Elastic electron scattering cross sections have been measured for 89Y at 180° for 0.72
Viscoelastic Properties Of A Bent And Straight Dimeric Liquid Crystal, Gregory A. Dilisi, Charles Rosenblatt, Anselm C. Griffin, Eugene M. Terentjev
Viscoelastic Properties Of A Bent And Straight Dimeric Liquid Crystal, Gregory A. Dilisi, Charles Rosenblatt, Anselm C. Griffin, Eugene M. Terentjev
Gregory A. DiLisi
Measurements Of Transverse Electron Scattering From The Deuteron In The Threshold Region At High Momentum Transfers, M Frodyma, R G. Arnold, D Benton, P E. Bosted, L Clogher, G Dechambrier, A T. Katramatou, J Lambert, A Lung, G G. Petratos, A Rahbar, S E. Rock, Z M. Szalata, B Debebe, R S. Hicks, A Hotta, Gerald Alvin Peterson
Measurements Of Transverse Electron Scattering From The Deuteron In The Threshold Region At High Momentum Transfers, M Frodyma, R G. Arnold, D Benton, P E. Bosted, L Clogher, G Dechambrier, A T. Katramatou, J Lambert, A Lung, G G. Petratos, A Rahbar, S E. Rock, Z M. Szalata, B Debebe, R S. Hicks, A Hotta, Gerald Alvin Peterson
Gerald Alvin Peterson
Deuteron electrodisintegration cross sections near 180' have been measured near breakup threshold for the fourmomentum transfer squared Q' range 1.21—2.76 (GeV/c) . Evidence for a change of slope in the cross section near Q =1 (GeV/c ) has been obtained. The data are compared to nonrelativistic calculations, which predict a strong influence of mesonexchange currents. The data are also compared to a hybrid quarkhadron model ~ None of these calculations agrees with the data over the entire measured range of Q'. The ratio of inelastic structure functions W, (Q', E„~)/Wz(Q', E„~)is extracted from the present ...
Measurements Of The Electric And Magnetic Form Factors Of The Neutron From Q2=1.75 To 4.00 (Gev/C)2, A Lung, L M. Stuart, P E. Bosted, L Andivahis, J Alster, R G. Arnold, C C. Chang, F S. Dietrich, W R. Dodge, R Gearhart, J Gomez, K A. Griffioen, R S. Hicks, R A. Miskimen, Gerald Alvin Peterson
Measurements Of The Electric And Magnetic Form Factors Of The Neutron From Q2=1.75 To 4.00 (Gev/C)2, A Lung, L M. Stuart, P E. Bosted, L Andivahis, J Alster, R G. Arnold, C C. Chang, F S. Dietrich, W R. Dodge, R Gearhart, J Gomez, K A. Griffioen, R S. Hicks, R A. Miskimen, Gerald Alvin Peterson
Gerald Alvin Peterson
Quasielastic ed cross sections have been measured at forward and backward angles. Rosenbluth separations were done to obtain RL and RT at Q2=1.75, 2.50, 3.25, and 4.00 (GeV/c)2. The neutron form factors GEn and GMn have been extracted using a nonrelativistic model. The sensitivity to deuteron wave function, relativistic corrections, and models of the inelastic background are reported. The results for GMn are consistent with the dipole form, while GEn is consistent with zero. Comparisons are made to theoretical models based on vector meson dominance, perturbative QCD, and QCD sum rules, as well ...
OrganoSoluble Segmented RigidRod Polyimide Films Part 3: Effects Of Copolymer Composition On Thermal Expansivity And On Relaxation Processes, Stephen Z. D. Cheng
OrganoSoluble Segmented RigidRod Polyimide Films Part 3: Effects Of Copolymer Composition On Thermal Expansivity And On Relaxation Processes, Stephen Z. D. Cheng
Stephen Z. D. Cheng
A series of copolyimides based on 3,3',4,4'biphenyltetracarboxylic dianhydride (BPDA), pyromellitic dianhydride (PMDA) (1,2,4,5,benzenetetracarboxylic dianhydride) and 2,2'bis(trifluoromethyl) benzidene (PFMB) have been synthesized with varying BPDAPFMB and PMDAPFMB compositions. A systematic change in the linear coefficient of thermal expansion (CTE) and the glasstransition temperature (T(g)) is observed by changing the ratios of the BPDAPFMB and PMDAPFMB compositions. Both the CTEs and T(g)s have been found to follow the molaradditivity rules. Dynamic mechanical experiments manifest two relaxation processes above room temperature. A subglass beta relaxation, which is independent of ...
Burnham, Colton, And Pollock Reply, Nancy Burnham, Rj Colton, Hm Pollock
Burnham, Colton, And Pollock Reply, Nancy Burnham, Rj Colton, Hm Pollock
Nancy A. Burnham
It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 3.0 License. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author (s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder
Anomalies For Pedestrians, Br Holstein
Anomalies For Pedestrians, Br Holstein
Barry R Holstein
The subject of anomalies, i.e., quantum mechanical symmetry breaking, is addressed using only basic quantum mechanics. Examples from different areas of physics are examined
Study Of The Violation Of Parity In Nuclear BetaDecay Via A Relative BetaPolarization Measurement With Polarized In107 Nuclei, N Severijns, R Prieels, M Allet, J Camps, P Demoor, J Deutsch, F Gimenonogues, Br Holstein, Bh King, O Naviliatcuncici, I Pepe, Pa Quin, P Schuurmans, R Siebelink, W Vanderpoorten, J Vanhaverbeke, L Vanneste, J Wouters
Study Of The Violation Of Parity In Nuclear BetaDecay Via A Relative BetaPolarization Measurement With Polarized In107 Nuclei, N Severijns, R Prieels, M Allet, J Camps, P Demoor, J Deutsch, F Gimenonogues, Br Holstein, Bh King, O Naviliatcuncici, I Pepe, Pa Quin, P Schuurmans, R Siebelink, W Vanderpoorten, J Vanhaverbeke, L Vanneste, J Wouters
Barry R Holstein
No abstract provided.
Solvable Quantum Mechanical Examples Of Broken Supersymmetry, Asim Gangopadhyaya
Solvable Quantum Mechanical Examples Of Broken Supersymmetry, Asim Gangopadhyaya
Asim Gangopadhyaya
Quantum Correlations And 3 Body Decays At A PhiFactory, Jf Donoghue, Br Holstein, Af Perez
Quantum Correlations And 3 Body Decays At A PhiFactory, Jf Donoghue, Br Holstein, Af Perez
Barry R Holstein
No abstract provided.
Phenomenographic Research And The Measurement Of Understanding: An Investigation Of Students' Conceptions Of Speed, Distance And Time, P Ramsden, Geoff Masters, Andrew Stephanou, E Walsh, E Martin
Phenomenographic Research And The Measurement Of Understanding: An Investigation Of Students' Conceptions Of Speed, Distance And Time, P Ramsden, Geoff Masters, Andrew Stephanou, E Walsh, E Martin
Prof Geoff Masters AO
No abstract provided.
Physics Students' Understanding Of Relative Speed: A Phenomenographic Study, Eleanor Walsh, Gloria Dall'alba, John Bowden, Elaine Martin, Ference Marton, Geoff Masters, Paul Ramsden, Andrew Stephanou
Physics Students' Understanding Of Relative Speed: A Phenomenographic Study, Eleanor Walsh, Gloria Dall'alba, John Bowden, Elaine Martin, Ference Marton, Geoff Masters, Paul Ramsden, Andrew Stephanou
Prof Geoff Masters AO
It is important that students of physics develop both quantitative and qualitative understanding of physical concepts and principles. Although accuracy and reliability in solving quantitative problems is necessary, a qualitative understanding is required in applying concepts and principles to new problems and in reallife situations. If students are not able to understand what underlies quantitative problemsolving procedures nor interpret the solution in physical terms, it is questionable whether they have developed an adequate understanding of physics. The research reported here is part of a larger phenomenographic study that is concerned with the assessment of physics students' understanding of some basic ...
Equivalence Theorem And Global Anomalies, John Donoghue, Jusak Tandean
Equivalence Theorem And Global Anomalies, John Donoghue, Jusak Tandean
John Donoghue
Quantum Correlations In Three Body Ö Decay, John Donoghue, Barry Holstein, Antonio Perez
Quantum Correlations In Three Body Ö Decay, John Donoghue, Barry Holstein, Antonio Perez
John Donoghue
PhotonPhoton Scattering, Pion Polarizability And Chiral Symmetry, John Donoghue, Barry Holstein
PhotonPhoton Scattering, Pion Polarizability And Chiral Symmetry, John Donoghue, Barry Holstein
John Donoghue
Electromagnetic Self Energies Of Pseudoscalar Mesons And Dashen's Theorem, John Donoghue, Barry Holstein, Daniel Wyler
Electromagnetic Self Energies Of Pseudoscalar Mesons And Dashen's Theorem, John Donoghue, Barry Holstein, Daniel Wyler
John Donoghue
Sliding Mode Control Of The Systems With Uncertain Direction Of Control Vector, Sergey V. Drakunov
Sliding Mode Control Of The Systems With Uncertain Direction Of Control Vector, Sergey V. Drakunov
Sergey V. Drakunov
No abstract provided.
Doping And Pressure Studies On Ybbipt, A. Lacerda, R. Movshovich, M. F. Hundley, Paul C. Canfield, D. Arms, G. Sparn, J. D. Thompson, Z. Fisk, N. E. Philips, H.R. Ott
Doping And Pressure Studies On Ybbipt, A. Lacerda, R. Movshovich, M. F. Hundley, Paul C. Canfield, D. Arms, G. Sparn, J. D. Thompson, Z. Fisk, N. E. Philips, H.R. Ott
Paul C. Canfield
The compound YbBiPt exhibits an extremely large low‐temperature C/T (γ∼8 J K−2 mol−1/Yb) which, if due solely to a renormalized effective mass, would make this material the heaviest correlated electron system known to date. In the Kondo model, the very large γ corresponds to a small characteristic energy scale that is expected to be pressure dependent. We have studied the effect of chemical pressure on YbBiPt single crystals by heat‐capacity measurements on Y and Lu‐doped samples. We have also made preliminary low‐temperature measurements under hydrostatic pressure of the heat capacity (300 ...