Calvin R. Howell

Professor of Physics

Office Location: 
221 Dfell, Durham, NC 27708
Front Office Address: 
Box 90308, Durham, NC 27708-0308
(919) 660-2632


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.

Education & Training

  • Ph.D., Duke University 1984

Bowman, CD, Bilpuch, EG, Bowman, DC, Crowell, AS, Howell, CR, McCabe, K, Smith, GA, Tonchev, AP, Tornow, W, Violet, V, Vogelaar, RB, Walter, RL, and Yingling, J. "Reducing parasitic thermal neutron absorption in graphite reactors by 30%." Nuclear Science and Engineering 161.1 (2009): 68-77.

Laveissière, G, Degrande, N, Jaminion, S, Jutier, C, Todor, L, Salvo, RD, Hoorebeke, LV, Alexa, LC, Anderson, BD, Aniol, KA, Arundell, K, Audit, G, Auerbach, L, Baker, FT, Baylac, M, Berthot, J, Bertin, PY, Bertozzi, W, Bimbot, L, Boeglin, WU, Brash, EJ, Breton, V, Breuer, H, Burtin, E, Calarco, JR, Cardman, LS, Cavata, C, Chang, C-C, Chen, J-P, Chudakov, E, Cisbani, E, Dale, DS, Jager, CWD, Leo, RD, Deur, A, D'Hose, N, Dodge, GE, Domingo, JJ, Elouadrhiri, L, Epstein, MB, Ewell, LA, and Finn, JM et al. "Virtual Compton scattering and neutral pion electroproduction in the resonance region up to the deep inelastic region at backward angles." Physical Review C - Nuclear Physics 79.1 (2009). Full Text

Weisenberger, AG, Kross, B, McKisson, J, Stolin, A, Zorn, C, Howell, CR, Crowell, AS, Reid, CD, Majewski, S, and Smith, MF. "Positron emission tomography detector development for plant biology." IEEE Nuclear Science Symposium Conference Record (2009): 2323-2328. Full Text

Kapadia, AJ, Tourassi, GD, Sharma, AC, Crowell, AS, Kiser, MR, and Howell, CR. "Experimental detection of iron overload in liver through neutron stimulated emission spectroscopy." Phys Med Biol 53.10 (May 21, 2008): 2633-2649. Full Text

Floyd, CE, Kapadia, AJ, Bender, JE, Sharma, AC, Xia, JQ, Harrawood, BP, Tourassi, GD, Lo, JY, Crowell, AS, Kiser, MR, and Howell, CR. "Neutron-stimulated emission computed tomography of a multi-element phantom." Phys Med Biol 53.9 (May 7, 2008): 2313-2326. Full Text

Stave, S, Ahmed, MW, Antolak, AJ, Blackston, MA, Crowell, AS, Doyle, BL, Henshaw, SS, Howell, CR, Kingsberry, P, Perdue, BA, Rossi, P, Prior, RM, Spraker, MC, and Weller, HR. "Cross section measurements of the B10(d,n0)C11 reaction below 160 keV." Physical Review C - Nuclear Physics 77.5 (2008). Full Text

Tonchev, AP, Angell, CT, Boswell, M, Crowell, AS, Fallin, B, Hammond, S, Howell, CR, Hutcheson, A, Karwowski, HJ, Kelley, JH, Pedroni, RS, Tornow, W, Becker, JA, Dashdorj, D, Kenneally, J, MacRi, RA, Stoyer, MA, Wu, CY, Bond, E, Chadwick, MB, Fitzpatrick, J, Kawano, T, Rundberg, RS, Slemmons, A, Vieira, DJ, and Wilhelmy, JB. "Measurement of the Am241(n,2n) reaction cross section from 7.6 MeV to 14.5 MeV." Physical Review C - Nuclear Physics 77.5 (2008). Full Text

Braun, RT, Tornow, W, Howell, CR, Trotter, DEG, Roper, CD, Salinas, F, Setze, HR, Walter, RL, and Weisel, GJ. "Neutron-proton analyzing power at 12 MeV and inconsistencies in parametrizations of nucleon-nucleon data." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 660.3 (2008): 161-166. Full Text

Chen, Q, Howell, CR, Carman, TS, Gibbs, WR, Gibson, BF, Hussein, A, Kiser, MR, Mertens, G, Moore, CF, Morris, C, Obst, A, Pasyuk, E, Roper, CD, Salinas, F, Setze, HR, Slaus, I, Sterbenz, S, Tornow, W, Walter, RL, Whiteley, CR, and Whitton, M. "Measurement of the neutron-neutron scattering length using the π-d capture reaction." Physical Review C - Nuclear Physics 77.5 (2008). Full Text

Kapadia, AJ, Sharma, AC, Tourassi, GD, Bender, JE, Howell, CR, Crowell, AS, Kiser, MR, Harrawood, BP, Pedroni, RS, and Jr, CEF. "Neutron stimulated emission computed tomography for diagnosis of breast cancer." IEEE Transactions on Nuclear Science 55.1 (2008): 501-509. Full Text