@article{raut_crowell_fallin_howell_huibregtse_kelley_kawano_kwan_rusev_tonchev_et al._2011, title={Cross-section measurements of neutron-induced reactions on GaAs using monoenergetic beams from 7.5 to 15 MeV}, volume={83}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.83.044621}, abstractNote={Cross-section measurements for neutron-induced reactions on GaAs have been carried out at twelve different neutron energies from 7.5 to 15 MeV using the activation technique. The monoenergetic neutron beams were produced via the $^{2}\mathrm{H}$($d,n$)$^{3}\mathrm{He}$ reaction. GaAs samples were activated along with Au and Al monitor foils to determine the incident neutron flux. The activities induced by the reaction products were measured using high-resolution $\ensuremath{\gamma}$-ray spectroscopy. Cross sections for five reaction channels, viz., $^{69}\mathrm{Ga}$($n,2n$)$^{68}\mathrm{Ga}$, $^{69}\mathrm{Ga}$($n,p$)$^{69}\mathrm{Zn}$${}^{m}$, $^{71}\mathrm{Ga}$($n,p$)$^{71}\mathrm{Zn}$${}^{m}$, $^{75}\mathrm{As}$($n,2n$)$^{74}\mathrm{As}$, and $^{75}\mathrm{As}$($n,p$)$^{75}\mathrm{Ge}$, are reported. The results are compared with the previous measurements and available data evaluations. Statistical-model calculations, based on the Hauser-Feshbach formalism, have been carried out using the TALYS and the COH3 codes and are compared with the experimental results.}, number={4}, journal={PHYSICAL REVIEW C}, author={Raut, R. and Crowell, A. S. and Fallin, B. and Howell, C. R. and Huibregtse, C. and Kelley, J. H. and Kawano, T. and Kwan, E. and Rusev, G. and Tonchev, A. P. and et al.}, year={2011}, month={Apr} }
 @article{tonchev_hammond_howell_huibregtse_hutcheson_kelley_kwan_raut_rusev_tornow_et al._2010, title={Measurement of the Am-241(gamma,n)Am-240 reaction in the giant dipole resonance region}, volume={82}, number={5}, journal={Physical Review. C, Nuclear Physics}, author={Tonchev, A. P. and Hammond, S. L. and Howell, C. R. and Huibregtse, C. and Hutcheson, A. and Kelley, J. H. and Kwan, E. and Raut, R. and Rusev, G. and Tornow, W. and et al.}, year={2010} }
 @article{hagmann_hall_johnson_mcnabb_kelley_huibregtse_kwan_rusev_tonchev_2009, title={Transmission-based detection of nuclides with nuclear resonance fluorescence using a quasimonoenergetic photon source}, volume={106}, ISSN={0021-8979 1089-7550}, url={http://dx.doi.org/10.1063/1.3238328}, DOI={10.1063/1.3238328}, abstractNote={We provide a detailed experimental validation of the concept of transmission-based isotope detection. The dominant background processes in this class of systems were measured by studying the detection of U238 with a quasimonochromatic (ΔE∕E∼3%) photon beam. A notch develops in the spectrum transmitted through our test objects due to the preferential attenuation of photons with an energy that resonantly excites a bound nuclear state in U238 near 2 MeV. The notch was measured downstream of our test objects by means of resonant photon scattering from a secondary U238 target. The dominant backgrounds measured in the notch detector due to radioactive decay and elastic scattering of the transmitted beam are presented. Processes that refill the notch with off-resonance photons will obscure the signal and result in a higher probability of false negatives. A measurement of the refill process produced a null result, and we report an upper limit on the magnitude of the notch fill factor.}, number={8}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Hagmann, C. A. and Hall, J. M. and Johnson, M. S. and McNabb, D. P. and Kelley, J. H. and Huibregtse, C. and Kwan, E. and Rusev, G. and Tonchev, A. P.}, year={2009}, month={Oct}, pages={084901} }