Hope College Physics Department
Research Experiences for Undergraduates
|Project Title:||Radiodating of Streambed Sediment|
|Student Name:||Timothy Nagi|
|Student's Home Institution:||Hope College|
|Research Advisor:||Dr. Paul DeYoung and Dr. Graham Peaslee|
|Source of Support:||This material is based upon work supported by the National Science Foundation under NSF-REU Grant No. PHY-0452206 and by the National Science Foundation under Grant No. RUI 0651627.|
The isotopic makeup of samples of streambed sediment collected in Wisconsin,
varying in their original location, collection date, and depth, was analyzed
using γ-ray spectroscopy. The spectra were measured using high-purity germanium
detectors in a low background counting facility. The goal of this project was
to determine the ratio of the amount of sediment coming from surface sources
to the amount coming from underground sources. This was to be done by comparing
the number of 7Be atoms present at the time of sample collection to the number
of supported 210Pb atoms present at the time of sample collection. To find
these values, corrections had to be made for detector efficiency, attenuation,
background radiation, elapsed time since collection, and the presence of unsupported
210Pb. Data collection and analysis is ongoing.
Publications and Presentations:
“Analysis of Electrodeposited Nickel-Iron Alloy Film Composition Using Particle-Induced X-ray Emission”, Alyssa A. Frey*, Nicholas R. Wozniak*, Timothy B. Nagi*, Matthew P. Keller*, J. Mark Lunderberg*, Graham F. Peaslee, Paul A. DeYoung, and Jennifer R. Hampton. Int. J. Electrochem, IJELC/604395, (2011).
“Evidence for the ground-state resonance of 26O”, E. Lunderberg*, P.A. DeYoung, Z. Kohley, H. Attanayake, T. Baumann, D. Bazin, D. Divaratne, S.M. Grimes, A. Haagsma, J.E. Finck, N. Frank, B. Luther, S. Mosby, T. Nagi*, G.F. Peaslee, A. Schiller, J. Snyder, A. Spyrou, M.J. Strongman, and M. Thoennessen. Phys. Rev. Lett. Submitted(2011).
“Exploring the Low-Z Shore of the Island of Inversion at N = 19”, G. Christian,N. Frank, S. Ash, T. Baumann, J. Brown, P. A. DeYoung, J. E. Finck, A. Gade, G. F. Grinyer, A. Grovom, J. D. Hinnefeld, E.M. Lunderberg*, B. Luther, M.Mosby, S. Mosby, T. Nagi*, G. F. Peaslee, W. F. Rogers, J. K. Smith, J. Snyder, A. Spyrou, M. J. Strongman, M. Thoennessen, M. Warren, D. Weisshaar, and A. Wersal. Phys. Rev. Lett. Submitted(2011).
“Construction of the Large multi-Institutional Scintillator Array”, Tim Nagi. 2011 Celebration of Undergraduate Research, Hope College, April 15, 2011.
“Particle-Induced X-ray Emission Analysis of Electrodeposited Alloy Film Composition.” Jennifer Hampton, Alyssa Frey*, Nicholas Wozniak*, Timothy Nagi*, Matthew Keller*, J. Lunderberg, Graham Peaslee, and Paul DeYoung. Submitted to J. Electrochem. Soc. (2010).