Calvin R. Howell

Professor of Physics

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

Overview

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

Tompkins, JR, Arnold, CW, Karwowski, HJ, Rich, GC, Sobotka, LG, and Howell, CR. "Measurements of the 48Ca(γ,n) reaction." Physical Review C - Nuclear Physics 84.4 (2011). Full Text

Raut, R, Crowell, AS, Fallin, B, Howell, CR, Huibregtse, C, Kelley, JH, Kawano, T, Kwan, E, Rusev, G, Tonchev, AP, Tornow, W, Vieira, DJ, and Wilhelmy, JB. "Cross section measurements of neutron induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV." Journal of Physics: Conference Series 312.SECTION 6 (2011). Full Text

Brady, SL, Gunasingha, R, Yoshizumi, TT, Howell, CR, Crowell, AS, Fallin, B, Tonchev, AP, and Dewhirst, MW. "A feasibility study using radiochromic films for fast neutron 2D passive dosimetry." Phys Med Biol 55.17 (September 7, 2010): 4977-4992. Full Text

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

Weisel, GJ, Tornow, W, Crowe, BJ, Crowell, AS, Esterline, JH, Howell, CR, Kelley, JH, Macri, RA, Pedroni, RS, Walter, RL, and Witała, H. "Neutron-deuteron analyzing power data at 19.0 MeV." Physical Review C - Nuclear Physics 81.2 (2010). Full Text Open Access Copy

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

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