Calvin R. Howell
Professor of Physics
Professor Howell is the Director of the Triangle Universities Nuclear Laboratory (TUNL). His research interests are the quantum chromodynamics (QCD) description of structure and reactions of few-nucleon systems, Big Bang and explosive nucleosynthesis, and applications of nuclear physics in biology, medicine and national security. His research includes: studies of few-nucleon reaction dynamics, measurements of the neutron-neutron scattering length, photodisintegration of the deuteron and beryllium at energies relevant to astrophysics processes, and studies of the carbon and nitrogen accumulation and translocation in plants using short-lived radioactive isotopes and positron emission tomography.
Kiser, MR, Reid, CD, Crowell, AS, Phillips, RP, and Howell, CR. "Exploring the transport of plant metabolites using positron emitting radiotracers." HFSP Journal 2.4 (2008): 189-204. Full Text
Elhami, E, Orce, JN, Scheck, M, Mukhopadhyay, S, Choudry, SN, McEllistrem, MT, Yates, SW, Angell, C, Boswell, M, Fallin, B, Howell, CR, Hutcheson, A, Karwowski, HJ, Kelley, JH, Parpottas, Y, Tonchev, AP, and Tornow, W. "Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction." Physical Review C - Nuclear Physics 78.6 (2008). Full Text
Howell, CR. "Extracting the neutron-neutron scattering length from neutron-deuteron breakup." Chiral Dynamics 2006 - Proceedings of the 5th International Workshop on Chiral Dynamics, Theory and Experiment, CD 2006 (December 1, 2007): 344-345.
Kapadia, AJ, Sharma, AC, Tourassi, GD, Bender, JE, Crowell, AS, Kiser, MR, Howell, CR, and Jr, CEF. "Non-invasive estimation of potassium (39K) in Bovine Liver using Neutron Stimulated Emission Computed Tomography (NSECT)." IEEE Nuclear Science Symposium Conference Record 4 (2007): 2076-2078. Full Text
Sharma, AC, Tourassi, GD, Kapadia, AJ, Harrawood, BP, Bender, JE, Crowell, AS, Kiser, MR, Howell, CR, and Jr, CEF. "Design and construction of a prototype rotation modulation collimator for near-field high-energy spectroscopic gamma imaging." IEEE Nuclear Science Symposium Conference Record 4 (2007): 2021-2024. Full Text
Sharma, AC, Tourassi, GD, Kapadia, AJ, Crowell, AS, Kiser, MR, Hutcheson, A, Harrawood, BP, Howell, CR, and Jr, CEF. "Elemental spectrum of a mouse obtained via neutron stimulation." Progress in Biomedical Optics and Imaging - Proceedings of SPIE 6510.PART 1 (2007). Full Text
Tonchev, AP, Angell, C, Boswell, M, Chyzh, A, Howell, CR, Karwowski, HJ, Kelley, JH, Tornow, W, Tsoneva, N, and Wu, YK. "Study of collective dipole excitations below the giant dipole resonance at HIγS." AIP Conference Proceedings 891 (2007): 339-347. Full Text
Muzichka, AY, Furman, WI, Lychagin, EV, Krylov, AR, Nekhaev, GV, Sharapov, EI, Shvetsov, VN, Strelkov, AV, Levakov, BG, Lyzhin, AE, Chernukhin, YI, Kandiev, YZ, Howell, CR, Mitchell, GE, Crawford, BE, Stephenson, SL, and Tornow, W. "Background determination for the neutron-neutron scattering experiment at the reactor YAGUAR." Nuclear Physics A 789.1-4 (2007): 30-45. Full Text
Hutcheson, A, Angell, CT, Becker, JA, Boswell, M, Crowell, AS, Dashdorj, D, Fallin, B, Fotiades, N, Howell, CR, Karwowski, HJ, Kelley, JH, Kiser, M, Macri, RA, Nelson, RO, Pedroni, RS, Tonchev, AP, Tornow, W, Vieira, DJ, Weisel, GJ, and Wilhelmy, JB. "Pulsed and monoenergetic beams for neutron cross-section measurements using activation and scattering techniques at Triangle Universities Nuclear Laboratory." Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 261.1-2 SPEC. ISS. (2007): 369-372. Full Text
Jr, CEF, Sharma, AC, Bender, JE, Kapadia, AJ, Xia, JQ, Harrawood, BP, Tourassi, GD, Lo, JY, Kiser, MR, Crowell, AS, Pedroni, RS, Macri, RA, Tajima, S, and Howell, CR. "Neutron stimulated emission computed tomography: Background corrections." Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 254.2 (2007): 329-336. Full Text