2014 CAP Congress / Congrès de l'ACP 2014

Session

(F-PLEN1) - CAP Best Student Presentations Final Competition / Session plénière - Compétition finale de l'ACP pour les meilleures communications étudiantes

F-PLEN1

20 Jun 2014, 10:45

Laurentian University / Université Laurentienne

172. Recent Advances in the Measurement of Rare-Earth Metal Oscillator Strengths Using Laser-Induced Plasmas

Mr Russell Putnam (University of Windsor)

20/06/2014, 10:45

Plasma Physics / Physique des plasmas (DPP)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Laser-induced plasmas offer a quick and convenient way to produce high-temperature (~50,000 K) plasmas to serve as a source of highly excited ions. Emission from the plasma, when dispersed in a high-resolution Échelle spectrometer, can be used to measure the relative intensity of all the emission lines from an excited energy level. This allows the determination of the level’s branching ratios...

236. Aspirin Reorganizes the Lipid Membrane

Richard Alsop (M)

20/06/2014, 11:00

Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The lipid membrane is the most important biological interface, and the fluidity of the membrane is a key property. Cholesterol is a well-known mediator of membrane fluidity. Using X-ray and neutron diffraction we have recently shown that cholesterol at physiological concentrations induces lateral membrane organization. Incorporation of cholesterol into the membrane leads to immiscible...

235. In-situ Measurements of the Reflectivity of VERITAS Telescopes

Simon Archambault (M)

20/06/2014, 11:15

Instrumentation and Measurement Physics / Physique des instruments et mesures (DIMP-DPIM)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

VERITAS is an array of four imaging atmospheric Cherenkov telescopes (IACT) sensitive to gamma rays at energies between 100 GeV and 10 TeV. Each telescope is based on a tessellated mirror, 12 metres in diameter, which reflects light from a gamma-ray-induced air shower to form an image on a pixellated `camera' comprising 499 photomultiplier tubes. The image brightness is the primary measure of...

123. Angular Momentum Conservation in the Earth-Moon System: A Quasilocal Approach

Ms Melanie Chanona (University of Waterloo)

20/06/2014, 11:30

Theoretical Physics / Physique théorique (DTP-DPT)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The nature of Earth-Moon interactions results in a complex astrophysical system. Due to subtle effects from the tidal gravitational field of the moon, the Earth's spin angular momentum is actually decreasing over time. But conservation of angular momentum requires that this be compensated for by altering the moon's orbit. I present a novel method of analyzing this interaction using a...

139. Single particle structure and shapes of exotic Sr isotopes

Mr Steffen Cruz (University of British Columbia)

20/06/2014, 11:45

Nuclear Physics / Physique nucléaire (DNP-DPN)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

Content is attached as a file.

281. Critical Binding Conditions for Two-electron Atoms

Ms Camille Estienne (Max-Planck-Institut fuer Quantenoptik)

20/06/2014, 12:00

Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

There has been a recent revival of interest in the critical nuclear charge Z_c that is just sufficient to bind a nucleus of charge Z and two electrons in the 1s^2 ^1S ground state [1--3]. It is conjectured that the inverse of critical charge is related to the radius of convergence 1/Z* for a 1/Z expansion of the energy of the form E(Z) = Z^2(E_0 + E_1/Z + E_2/Z^2 + ...). We...

296. A single liquid on a homogeneous substrate can lead to quantized contact angles and running droplets

Mark Ilton (McMaster University)

20/06/2014, 12:15

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

We have observed for the first time a quantized spectrum of contact angles in the dewetting of a liquid from a homogeneous solid substrate. Using structured liquids of a lamellar diblock copolymer above the order-disorder transition temperature, we observe that predominantily disordered droplets coexist with different discrete thicknesses of wetting layer. At a fixed temperature, the measured...

185. A search at Super-Kamiokande for low mass dark matter candidates in the T2K neutrino beam

Corina Nantais (U)

20/06/2014, 12:30

Particle Physics / Physique des particules (PPD)

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)

The T2K neutrino beam is produced by colliding 30 GeV protons with a graphite target, and some dark sector models predict that a dark matter candidate could be created in the collision. This massive and neutral particle could scatter off a nucleon in Super-Kamiokande, a 50 kilotonne water Cherenkov detector. Similar to the neutral current quasi-elastic neutrino-oxygen interaction, the dark...