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.
Zhou, Z, Ruan, X, Du, Y, Qi, B, Tang, H, Xia, H, Walter, RL, Braun, RT, Howell, CR, Tornow, W, Weisel, GJ, Dupuis, M, Delaroche, JP, Chen, Z, Chen, Z, and Chen, Y. "Differential cross section for neutron scattering from Bi209 at 37 MeV and the weak particle-core coupling." Physical Review C - Nuclear Physics 82.2 (2010). Full Text Open Access Copy
Weisel, GJ, Tornow, W, Crowe, BJ, Crowell, AS, Esterline, JH, Howell, CR, Kelley, JH, Macri, RA, Pedroni, RS, Walter, RL, and Witala, H. "Neutron-deuteron analyzing power at 19.0 MeV." Phys. Rev. C 81 (2010): 024003-. (Academic Article)
Tonchev, AP, Hammond, SL, Howell, CR, Huibregtse, C, Hutcheson, A, Kelley, JH, Kwan, E, Raut, R, Rusev, G, Tornow, W, Kawano, T, Vieira, DJ, and Wilhelmy, JB. "Measurement of the Am241(γ,n)Am240 reaction in the giant dipole resonance region." Physical Review C - Nuclear Physics 82.5 (2010). Full Text
Weisenberger, AG, Stolin, A, Kross, B, Lee, SJ, Majewski, S, McKisson, J, McKisson, JE, Xi, W, Zorn, C, Howell, CR, Crowell, AS, Reid, CD, and Smith, MF. "Compact beta particle/positron imager for plant biology." IEEE Nuclear Science Symposium Conference Record (2010): 1752-1754. Full Text
Bowman, CD, Vogelaar, RB, Bilpuch, EG, Bowman, DC, Howell, CR, Pierson, MA, Tonchev, AP, and Tornow, W. "Basis for green energy multiplier*alternative nuclear technology (GEM*ART)." Transactions of the American Nuclear Society 100 (2009): 578-579.
Furman, WI, Muzichka, AY, Crawford, BE, Howell, CR, Kandiev, Y, Levakov, BG, Litvin, VI, Lychagin, EV, Lyzhin, AE, Mitchell, GE, Nekhaev, GV, Sharapov, EI, Shvetsov, VN, Stephenson, SL, Strelkov, AV, Tchernukhin, YI, and Tomow, W. "Current status of the experiment on direct measurement of neutron-neutron scattering length at the reactor yaguar." AIP Conference Proceedings 1109 (2009): 53-58. Full Text
Tonchev, AP, Hammond, S, Howell, CR, Huibregtse, C, Hutcheson, A, Karwowski, HJ, Kelley, JH, Kwan, E, Rusev, G, Tornow, W, Vieira, DJ, and Wilhelmy, JB. "Photodisintegration cross section of241Am." AIP Conference Proceedings 1099 (2009): 820-823. Full Text
Hutcheson, A, Angell, C, Becker, JA, Crowell, AS, Dashdorj, D, Fallin, B, Fotiades, N, Howell, CR, Karwowski, HJ, Kawano, T, Kelley, JH, Kwan, E, MacRi, RA, Nelson, RO, Pedroni, RS, Tonchev, AP, and Tornow, W. "Cross sections for U238(n,n'γ) and U238(n,2nγ) reactions at incident neutron energies between 5 and 14 MeV." Physical Review C - Nuclear Physics 80.1 (2009). Full Text
Trotter, DEG, Meneses, FS, Tornow, W, Crowell, AS, Howell, CR, Schmidt, D, and Walter, RL. "Neutron detection efficiency determinations for the TUNL neutron-neutron and neutron-proton scattering-length measurements." Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 599.2-3 (2009): 234-242. Full Text
Bowman, CD, Bowman, DC, Bilpuch, EG, Crowell, AS, Howell, CR, McCabe, K, Smith, GA, Tonchev, AP, Tornow, W, Vylet, V, and Walter, RL. "Neutrons from a proton-driven deuterium target as a possible competitor to spallation for nuclear energy applications." Nuclear Science and Engineering 161.1 (2009): 119-124.