@article{stoyer_tonchev_silano_gooden_wilhelmy_tornow_howell_krishichayan_finch_2020, title={Fission Product Yield Measurements from Neutron-Induced Fission of U-235,U-238 and Pu-239}, volume={232}, ISSN={["2100-014X"]}, DOI={10.1051/epjconf/202023203006}, abstractNote={Fission product yields (FPY) are one of the most fundamental quantities that can be measured for a fissioning nucleus and are important for basic and applied nuclear physics. Recent measurements using mono-energetic and pulsed neutron beams generated using Triangle Universities Nuclear Laboratory’s tandem accelerator and employing a dual fission chamber setup have produced self-consistent, high-precision data critical for testing fission models for the neutron-induced fission of 235,238 U and 239 Pu between neutron energies of 0.5 to 15.0 MeV. These data have elucidated a low-energy dependence of FPY for several fission products using irradiations of varying lengths and neutron energies. This paper will discuss new measurements just beginning utilizing a RApid Belt-driven Irradiated Target Transfer System (RABITTS) to measure shorterlived fission products and the time dependence of fission yields, expanding the measurements from cumulative towards independent fission yields. The uniqueness of these FPY data and the impact on the development of fission theory will be discussed.}, journal={HEAVY ION ACCELERATOR SYMPOSIUM (HIAS 2019)}, author={Stoyer, M. A. and Tonchev, A. P. and Silano, J. A. and Gooden, M. E. and Wilhelmy, J. B. and Tornow, W. and Howell, C. R. and Krishichayan, F. and Finch, S.}, year={2020} }
 @article{bhike_fallin_gooden_ludin_tornow_2015, title={Comprehensive sets of Xe-124(n, gamma)Xe-125 and Xe-124(n, 2n)Xe-123 cross-section data for assessment of inertial-confinement deuterium-tritium fusion plasma}, volume={91}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.91.011601}, abstractNote={The authors measure crucial neutron cross sections for ${}^{124}$Xe, a fusion dopant in deuterium-tritium capsules, with a predicted high neutron-capture rate. The data provides an accurate experimental basis to interpret measurements of the ${}^{125}$Xe/${}^{123}$Xe ratio, which is a sensitive diagnostic tool for the fuel density of the plasma in the capsules during the implosion.}, number={1}, journal={PHYSICAL REVIEW C}, author={Bhike, Megha and Fallin, B. and Gooden, M. E. and Ludin, N. and Tornow, W.}, year={2015}, month={Jan} }
 @article{bhatia_fallin_gooden_howell_kelley_tornow_arnold_bond_bredeweg_fowler_et al._2015, title={Exploratory study of fission product yields of neutron-induced fission of U-235, U-238, and Pu-239 at 8.9 MeV}, volume={91}, number={6}, journal={Physical Review. C, Nuclear Physics}, author={Bhatia, C. and Fallin, B. F. and Gooden, M. E. and Howell, C. R. and Kelley, J. H. and Tornow, W. and Arnold, C. W. and Bond, E. and Bredeweg, T. A. and Fowler, M. M. and et al.}, year={2015} }
 @article{bhatia_fallin_gooden_howell_kelley_tornow_arnold_bond_bredeweg_fowler_et al._2014, title={Dual-fission chamber and neutron beam characterization for fission product yield measurements using monoenergetic neutrons}, volume={757}, journal={Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors, and Associated Equipment}, author={Bhatia, C. and Fallin, B. and Gooden, M. E. and Howell, C. R. and Kelley, J. H. and Tornow, W. and Arnold, C. W. and Bond, E. M. and Bredeweg, T. A. and Fowler, M. M. and et al.}, year={2014}, pages={7–19} }
 @article{bhatia_fallin_howell_tornow_gooden_kelley_arnold_bond_bredeweg_fowler_et al._2014, title={Fission product yield study of U-235, U-238 and Pu-239 using dual-fission ionization chambers}, volume={119}, journal={Nuclear Data Sheets}, author={Bhatia, C. and Fallin, B. and Howell, C. and Tornow, W. and Gooden, M. and Kelley, J. and Arnold, C. and Bond, E. and Bredeweg, T. and Fowler, M. and et al.}, year={2014}, pages={E324–327} }
 @article{massarczyk_rusev_schwengner_doenau_bhatia_gooden_kelley_tonchev_tornow_2014, title={Magnetic dipole strength in Xe-128 and Xe-134 in the spin-flip resonance region}, volume={90}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.90.054310}, abstractNote={The magnetic dipole strength in the energy region of the spin-flip resonance is investigated in $^{128}\mathrm{Xe}$ and $^{134}\mathrm{Xe}$ using quasimonoenergetic and linearly polarized $\ensuremath{\gamma}$-ray beams at the High-Intensity $\ensuremath{\gamma}$-Ray Source facility in Durham, North Carolina, USA. Absorption cross sections were deduced for the magnetic and electric and dipole strength distributions separately for various intervals of excitation energy, including the strength of states in the unresolved quasicontinuum. The magnetic dipole strength distributions show structures resembling a resonance in the spin-flip region around an excitation energy of 8 MeV. The electric dipole strength distributions obtained from the present experiments are in agreement with the ones deduced from an earlier experiment using broad-band bremsstrahlung instead of a quasimonoenergetic beam. The experimental magnetic and electric dipole strength distributions are compared with phenomenological approximations and with predictions of a quasiparticle random phase approximation in a deformed basis.}, number={5}, journal={PHYSICAL REVIEW C}, author={Massarczyk, R. and Rusev, G. and Schwengner, R. and Doenau, F. and Bhatia, C. and Gooden, M. E. and Kelley, J. H. and Tonchev, A. P. and Tornow, W.}, year={2014}, month={Nov} }
 @article{bhatia_gooden_tornow_tonchev_2014, title={Measurements of the (n,2n) Reaction Cross Section of Ta-181 from 8 to 15 MeV}, volume={119}, ISSN={["1095-9904"]}, DOI={10.1016/j.nds.2014.08.049}, abstractNote={The cross section for the reaction 181Ta(n,2n)180Tag was measured from 8 to 15 MeV in small energy steps to resolve inconsistencies in the existing databases. The activation technique was used, and the 93.4 keV γ-ray from the decay of the 180Tag ground state was recorded with a HPGe detector. In addition, the γ-rays from the monitor reactions 27Al(n,α)24Na and 197Au(n,2n)196Au were measured for neutron fluence determination. As a cross check, a calibrated neutron detector was also used. The ENDF/B-VII.1 and TENDL-2011 evaluations are in considerable disagreement with the present data, which in turn agree very well with the majority of the existing data in the 14 MeV energy region.}, journal={NUCLEAR DATA SHEETS}, author={Bhatia, C. and Gooden, M. E. and Tornow, W. and Tonchev, A. P.}, year={2014}, month={May}, pages={176–178} }
 @article{massarczyk_schwengner_donau_frauendorf_anders_bemmerer_beyer_bhatia_birgersson_butterling_et al._2014, title={Nuclear Deformation and Neutron Excess as Competing Effects for Dipole Strength in the Pygmy Region}, volume={112}, number={7}, journal={Physical Review Letters}, author={Massarczyk, R. and Schwengner, R. and Donau, F. and Frauendorf, S. and Anders, M. and Bemmerer, D. and Beyer, R. and Bhatia, C. and Birgersson, E. and Butterling, M. and et al.}, year={2014} }
 @article{gooden_fallin_finch_kelley_howell_rusev_tonchev_tornow_stanislav_2014, title={Partial cross sections of neutron-induced reactions on Cu-nat at E-n=6, 8, 10, 12, 14, and 16 MeV for 0 nu beta beta background studies}, volume={119}, journal={Nuclear Data Sheets}, author={Gooden, M. E. and Fallin, B. A. and Finch, S. W. and Kelley, J. H. and Howell, C. R. and Rusev, G. and Tonchev, A. P. and Tornow, W. and Stanislav, V.}, year={2014}, pages={E121–123} }
 @article{bhatia_gooden_tornow_tonchev_2013, title={Ground-state and isomeric-state cross sections for Ta-181(n, 2n)Ta-180 between 8 and 15 MeV}, volume={87}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.87.031601}, abstractNote={Using the activation technique, the cross section for the reaction ${}^{181}$Ta(n,2n)${}^{180}$Ta${}^{g}$ was measured from 8 to 15 MeV in small energy steps to resolve inconsistencies in the existing database. The 93.4 keV \ensuremath{\gamma} ray from the decay of the ${}^{180}$Ta${}^{g}$ ground state was recorded with a high-purity germanium (HPGe) detector. The monitor reactions ${}^{27}$Al(${n,\ensuremath{\alpha})}^{24}$Na and ${}^{197}$Au(n,2n)${}^{196}$Au were used for neutron fluence determination. The ENDF VII.1 and TENDL 2011 evaluations are in considerable disagreement with the present data, which in turn agree very well with the majority of the existing data in the 14 MeV energy region. A detailed analysis using the code talys was performed to describe the present data and to predict the (n,2n) cross section to the isomeric state of ${}^{180}$Ta.}, number={3}, journal={PHYSICAL REVIEW C}, author={Bhatia, C. and Gooden, M. E. and Tornow, W. and Tonchev, A. P.}, year={2013}, month={Mar} }
 @article{ellison_heinemann_vogt_gooden_2013, title={Planar undulator motion excited by a fixed traveling wave: Quasiperiodic averaging, normal forms, and the free electron laser pendulum}, volume={16}, ISSN={["1098-4402"]}, DOI={10.1103/physrevstab.16.090702}, abstractNote={We present a mathematical analysis of planar motion of energetic electrons moving through a planar dipole undulator, excited by a fixed planar polarized plane wave Maxwell field in the X-Ray Free Electron Laser (FEL) regime. Our starting point is the 6D Lorentz system, which allows planar motions, and we examine this dynamical system as the wavelength of the traveling wave varies. By scalings and transformations the 6D system is reduced, without approximation, to a 2D system in a form for a rigorous asymptotic analysis using the Method of Averaging (MoA), a long time perturbation theory. The two dependent variables are a scaled energy deviation and a generalization of the so-called ponderomotive phase. As the wavelength varies the system passes through resonant and nonresonant (NR) zones and we develop NR and near-to-resonant (NtoR) normal form approximations. For a special initial condition and on resonance, the NtoR normal form reduces to the well-known FEL pendulum system. We then state and prove NR and NtoR first-order averaging theorems which give near optimal error bounds for the MoA approximations. The proofs are novel in that they do not use a near identity transformation and they use a system of differential inequalities. The NR case is an example of quasiperiodic averaging where the small divisor problem enters in the simplest possible way. To our knowledge the planar problem has not been analyzed with the generality we aspire to here nor has the standard FEL pendulum system been derived with associated error bounds as we do here.}, number={9}, journal={PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS}, author={Ellison, James A. and Heinemann, Klaus and Vogt, Mathias and Gooden, Matthew}, year={2013}, month={Sep} }
 @article{bhatia_finch_gooden_tornow_2013, title={Xe-136(n,2n)Xe-135 cross section between 9 and 15 MeV}, volume={87}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.87.011601}, abstractNote={The cross section of the reaction ${}^{136}$Xe(n,2n)${}^{135}$Xe to both the ground state and the 526.6 keV isomeric states of ${}^{135}$Xe was measured between 9.0 and 14.9 MeV. These data are important to guide evaluations and theoretical calculations aimed at estimating the importance of neutron-induced background effects in searches for neutrinoless double-\ensuremath{\beta} decay of ${}^{136}$Xe.}, number={1}, journal={PHYSICAL REVIEW C}, author={Bhatia, C. and Finch, S. W. and Gooden, M. E. and Tornow, W.}, year={2013}, month={Jan} }
 @article{bhatia_finch_gooden_tornow_2012, title={Ar-40(n, p)Cl-40 reaction cross section between 9 and 15 MeV}, volume={86}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.86.041602}, abstractNote={The activation technique was used to measure the cross section for the reaction ${}^{40}\mathrm{Ar}(n,\phantom{\rule{-0.16em}{0ex}}p){\phantom{\rule{0.16em}{0ex}}}^{40}\mathrm{Cl}$ in 0.5 MeV energy steps in the neutron energy range between 9 and 15 MeV. These data are important for estimating background contributions in neutrinoless double-beta decay and dark matter searches, as well as in argon-based large neutrino detectors. The data are compared to evaluations and theoretical predictions.}, number={4}, journal={PHYSICAL REVIEW C}, author={Bhatia, C. and Finch, S. W. and Gooden, M. E. and Tornow, W.}, year={2012}, month={Oct} }