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Full-Text Articles in Physics
382— Wiyn Open Cluster Study: Ubvri Photometry Of Ngc 2204, Kylie Snyder, Dante Scarazzini
382— Wiyn Open Cluster Study: Ubvri Photometry Of Ngc 2204, Kylie Snyder, Dante Scarazzini
GREAT Day Posters
The purpose of this project was to study the open star cluster NGC2204 using images taken at Kitt Peak National Observatory using the WIYN 0.9m telescope. These images were analyzed photometrically with the intention of determining the reddening, metallicity, age, and distance modulus of the star cluster. Each image was analyzed using software that determined the point spread function and applied that function to determine the magnitude of each star in that image. These magnitudes were taken for each filter, UBVRI, and then combined and averaged to create a single catalog. Standard stars, taken on the same night, were used …
285— Modifications Of Cosmic Watch Muon Detectors For Deployment At Letchworth State Park, Kevin Seitz
285— Modifications Of Cosmic Watch Muon Detectors For Deployment At Letchworth State Park, Kevin Seitz
GREAT Day Posters
For an American Physical Society funded physics outreach project, fifteen Cosmic Watch cosmic ray muon detectors, designed at MIT, are being assembled by students at Geneseo. Over the summer of 2020, ten detectors will be deployed around Letchworth State Park to educate park visitors about cosmic rays. The muon detection rate and cumulative count are displayed on a small OLED screen, with an LED flashing every time a muon passes through the detector’s scintillator. Each incidence is also logged to a micro SD card. Customized open-source software was used to allow the OLED and SD card to work simultaneously. The …
297— Modeling Optical Extinction Spectra Of Polystyrene Beads In Water, Justin D'Souza
297— Modeling Optical Extinction Spectra Of Polystyrene Beads In Water, Justin D'Souza
GREAT Day Posters
To model the global climate, it is critical to understand how light interacts with particles in the atmosphere. Extinction spectra have been measured and simulated for a model system consisting of polystyrene beads in water. These beads have sizes comparable to atmospheric aerosols and can be dyed to mimic the properties of soot. Once the simulation is validated by comparing optimized simulation parameters to nominal particle properties, it can be used to study soot aerosols. We show that our simulation program can return reasonable values for the size and optical properties of this model system.
396— Radioactive Decay Calibrations Of Rics Using 41 Ar, Emily Vanderbilt, Nicole Gindling
396— Radioactive Decay Calibrations Of Rics Using 41 Ar, Emily Vanderbilt, Nicole Gindling
GREAT Day Posters
The short-lived isotope-counting system (SLIC) being built for the OMEGA laser facility at LLE requires gaseous radioisotopes for calibration purposes. Using a Plutonium-Beryllium (Pu-Be) source at SUNY Geneseo, 41Ar was made by capturing thermal neutrons via the 40Ar(n,gamma) reaction. Once activated, 41Ar beta decays, producing an electron with endpoint energy of 1.198 MeV. The daughter product is found to be the second excited state of 41K 99.1% of the time. This decays to the ground state and emits a 1.293 MeV gamma ray. To accurately measure the beta activity of 41Ar, the Gamma-X system at Geneseo is used as a …
240— Target Characterization Using Rutherford Backscattering Spectroscopy, Matthew G. Klein, Anthony C. Cooper, Jovahn A. Roumell
240— Target Characterization Using Rutherford Backscattering Spectroscopy, Matthew G. Klein, Anthony C. Cooper, Jovahn A. Roumell
GREAT Day Posters
Rutherford backscattering spectroscopy (RBS) is a non-destructive ion-beam analytical technique that is used to determine properties of a target such as thickness, areal density, and elemental composition. This scattering is the result of Coulomb forces between the target atoms and the incident particle. The energy spectrum of the scattered ions depends on the atomic number of the target atoms as well as the target thickness.
293— Moly - Monitoring Oxygen Levels In Ntof Scintillators Using Cosmic Ray Muons, Sean King, Matthew Signor
293— Moly - Monitoring Oxygen Levels In Ntof Scintillators Using Cosmic Ray Muons, Sean King, Matthew Signor
GREAT Day Posters
High Energy Density Physics and Inertial Confinement Fusion facilities employ nTOF methods to measure neutron energies. Laser induced fusion facilities use the beam pulse as a start signal and Xylene scintillators as the stop signal to obtain the time of flight. To improve timing performance, the scintillator liquid is quenched with oxygen reducing the light production. However, oxygen reacts with the scintillator liquid causing the detector photo flash decay time to increase that reduces the energy resolution of the detector. An in-situ monitoring system which uses cosmic ray muons to determine the oxygen concentration, is being developed at SUNY Geneseo. …