Room 102 Olin Engineering Building
University Endowed Professor
B.A., Saint John's College, Annapolis, MD
MSc, Ph.D., The American University, Washington, DC (1995)
Experimental Nuclear Physics, Quantum ChromoDynamics, Nucleon Structure, Medical Instrumentation, Proton Radiotherapy, Medical Physics
I am an experimental nuclear physicist with a joint position both as faculty at HU and as staff scientist at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) - which is about 10 minutes fromcampus. I also have an interest in medical applications of nuclear physics, and currently serve as Director of the HU Center for Advanced Medical Instrumentation, and the HU joint medical physics program with the Eastern Virginia Medical School.
Our experimental nuclear physics group is very active at Jefferson Lab, performing electron scattering experiments to study the fundamental structure of the nucleon. In this, we are Spokespeople for over a dozen experiments, all aimed at high precision measurements of the proton and neutron structure functions. The group has led recent efforts to quantify and better understand a fascinating phenomenon known as quark-hadron duality, Additionally, we have a major detector construction role in a new Fermi National Accelerator Laboratory neutrino scattering effort. I am also a member of the Coordinated Theoretical-Experimental Project on QCD (CTEQ), a multi-institutional collaboration devoted to a broad program of research projects and cooperative enterprises in high-energy physics centered on Quantum Chromodynamics (QCD) and its implications in all areas of the Standard Model and beyond
Another major research area is a crossing of disciplines to bring detection and data acquisition techniques from nuclear and particle physics to medical technology, concentrating on nuclear medicine and radiation therapy. This is the focus of our HU Center for Advanced Medical Instrumentation, where our group now holds 9 patents on devices and techniques ranging from the implementation of advanced gamma cameras for dedicated breast cancer diagnosis and localization, radiation characterization for intravascular brachytherapy, intraoperative (cancer) probe development, intensity modulated radiation therapy beam characterization, and radiation dose simulation techniques.
Most recently, HU has embarked on a major project to establish a proton radiotherapy institute. This will be the nation's seventh, largest, and most advanced such facility. I am excited to serve as the Scientific and Technical Director for this effort.
- W. Melnitchouk, R. Ent, C.E. Keppel, Quark-Hadron Duality in Electron Scattering, Physics Reports 406, 127-301 (2005)
- Ingo Schienbein, Voica A. Radescu, G.P. Zeller, M. Eric Christy, C.E. Keppel, Kevin S. McFarland, W. Melnitchouk, Fredrick I. Olness, Mary Hall Reno, Fernando Steffens, Ji-Young Yu, A Review of Target Mass Corrections, arXiv:0709.1775 (accepted 10/07 as a Topical Review in J. Phys. G: Nucl. Part. Phys.)
- V. Tvaskis, et al., Longitudinal-Transverse Separations of Structure Functions at Low Q2 for Hydrogen and Deuterium, Phys. Rev. Lett. 98:142301 (2007)
- L. Tynes, P. Gueye, C. Harmon, C. Keppel., D. Kieper, N. Onumah, P.S. Wong, Beta-Based Detector for Intravascular Brachytherapy, Medical Physics, Vol. 31 No. 6, 1866 (2004)
- E. Christy, et al., Measurements of Electron Proton Elastic Cross Sections for 0.4 < Q2 < 5.5 (GeV/c)2, Phys. Rev. C 70, 015206 (2004)
- D. Weisenberger, et al. Small Field of View Scintimammography Gamma Camera Integrated to a Stereotactic Core Biopsy Digital X-Ray System, IEEE Trans. Nucl. Sc. (2002)
- I. Niculescu, et al. Experimental Verification of Quark-Hadron Duality, Phys. Rev. Lett. 85, 1186 (2000)
- I. Niculescu, et al. Evidence for Valence Quark-Hadron Duality, Phys. Rev. Lett. 85, 1182 (2000)
- R. Ent, C.E. Keppel, and I. Niculescu Nucleon Elastic Form Factors and Local Duality, Phys. Rev. D 62, 073008 (2000)
- S. Liuti, R. Ent, C. E. Keppel and I. Niculescu, Perturbative QCD Analysis of Local Duality in a Fixed W2 Framework, Phys. Rev. Lett. 89, 162001 (2002)
- D. Kieper, et al., Optimization of Breast Imaging Procedure with Dedicated Compact Gamma Cameras, Nuclear Inst. and Methods in Physics Research, A 497/1, pp 168 - 173 (2002)
- D. Kieper, et al., Data Analysis Methods for a Small Field-of-View Combined cintimammography/Digital X-Ray System in Breast Lesion Management, Nuclear Inst. and Methods in Physics Research, A 497/1 pp 135 - 140