@article{valenta_baramsai_bredeweg_couture_chyzh_jandel_kroll_krticka_mitchell_o'donnell_et al._2017, title={Examination of photon strength functions for Dy-162,Dy-164 from radiative capture of resonance neutrons}, volume={96}, ISSN={["2469-9993"]}, DOI={10.1103/physrevc.96.054315}, abstractNote={The $\ensuremath{\gamma}$ rays following radiative neutron capture on $^{161,163}\mathrm{Dy}$ targets were measured with the highly segmented $\ensuremath{\gamma}$-ray calorimeter Detector for Advanced Neutron Capture Experiments at the Los Alamos Neutron Science Center. The $\ensuremath{\gamma}$-ray energy spectra for different multiplicities were gathered for tens of $s$-wave resonances of both possible spins in each nucleus. Analysis of these spectra within the statistical model enabled us to draw conclusions about dipole photon strength functions with emphasis on the scissors mode. The photon strength functions best describing Dy data are very similar to previously published results on even-even Gd isotopes. It was shown that the scissors mode plays a significant role in the decay of highly excited states up to the neutron separation energy. Measurement of multiple resonances allowed us to assess the fluctuations of experimental spectra and to compare the fluctuations with simulated ones. The size of measured fluctuations is on average smaller than predicted from simulations. However, the results are puzzling as the difference between simulations within the statistical model and experiment is not consistent for both nuclei.}, number={5}, journal={PHYSICAL REVIEW C}, author={Valenta, S. and Baramsai, B. and Bredeweg, T. A. and Couture, A. and Chyzh, A. and Jandel, M. and Kroll, J. and Krticka, M. and Mitchell, G. E. and O'Donnell, J. M. and et al.}, year={2017}, month={Nov} }
 @article{walker_krticka_baramsai_becvar_bredeweg_chyzh_haight_jandel_kroll_mitchell_et al._2015, title={Measurement of the Mo-97(n,gamma) reaction with the DANCE gamma calorimeter array}, volume={92}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.92.014324}, abstractNote={Spectra of $\ensuremath{\gamma}$ rays following the $^{97}\mathrm{Mo}(n,\ensuremath{\gamma})$ reaction were measured as a function of incident neutron energy with the DANCE (Detector for Advanced Neutron Capture Experiments) array of $160 {\mathrm{BaF}}_{2}$ scintillation detectors at the Los Alamos Neutron Science Center using an enriched $^{97}\mathrm{Mo}$ target. These spectra were used for the assignment of spins of the $^{97}\mathrm{Mo}$ resonances up to neutron energy ${E}_{n}=1.7$ keV, as well as in the study of photon strength functions (PSFs) in $^{98}\mathrm{Mo}$. Analysis of the spectra with the nuclear statistical model showed that they can be well reproduced with the same PSF models which well described the $\ensuremath{\gamma}$ decay following slow neutron capture in $^{95}\mathrm{Mo}$. On the other hand, the spectra are inconsistent with PSFs describing some other experimental data in $^{98}\mathrm{Mo}$.}, number={1}, journal={PHYSICAL REVIEW C}, author={Walker, C. L. and Krticka, M. and Baramsai, B. and Becvar, F. and Bredeweg, T. A. and Chyzh, A. and Haight, R. C. and Jandel, M. and Kroll, J. and Mitchell, G. E. and et al.}, year={2015}, month={Jul} }
 @article{ullmann_kawano_bredeweg_couture_haight_jandel_o'donnell_rundberg_vieira_wilhelmy_et al._2014, title={Cross section and.gamma-ray spectra for U-238(n,gamma) measured with the DANCE detector array at the Los Alamos Neutron Science Center}, volume={89}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.89.034603}, abstractNote={Background: Accurate knowledge of the $^{238}\mathrm{U}$($n$,$\ensuremath{\gamma}$) cross section is important for developing theoretical nuclear reaction models and for applications. However, capture cross sections are difficult to calculate accurately and often must be measured.Purpose: We seek to confirm previous measurements and test cross-section calculations with an emphasis on the unresolved resonance region from 1 to 500 keV.Method: Cross sections were measured from 10 eV to 500 keV using the DANCE detector array at the LANSCE spallation neutron source. The measurements used a thin target, 48 mg/cm${}^{2}$ of depleted uranium. Gamma cascade spectra were also measured to provide an additional constraint on calculations. The data are compared to cross-section calculations using the code CoH${}_{3}$ and cascade spectra calculations made using the code dicebox.Results: This new cross-section measurement confirms the previous data. The measured gamma-ray spectra suggest the need for additional low-lying dipole strength in the radiative strength function. New Hauser-Feshbach calculations including this strength accurately predict the capture cross section without renormalization.Conclusions: The present cross-section data confirm previous measurements. Including additional low-lying dipole strength in the radiative strength function may lead to more accurate cross-section calculations in nuclei where $\ensuremath{\langle}{\ensuremath{\Gamma}}_{\ensuremath{\gamma}}\ensuremath{\rangle}$ has not been measured.}, number={3}, journal={PHYSICAL REVIEW C}, author={Ullmann, J. L. and Kawano, T. and Bredeweg, T. A. and Couture, A. and Haight, R. C. and Jandel, M. and O'Donnell, J. M. and Rundberg, R. S. and Vieira, D. J. and Wilhelmy, J. B. and et al.}, year={2014}, month={Mar} }
 @article{ullmann_mosby_bredeweg_couture_haight_jandel_kawano_o'donnell_rundberg_vieira_et al._2014, title={Neutron Capture Cross Sections and Gamma Emission Spectra from Neutron Capture on U-234,U-236,U-238 Measured with DANCE}, volume={119}, ISSN={["1095-9904"]}, DOI={10.1016/j.nds.2014.08.008}, journal={NUCLEAR DATA SHEETS}, author={Ullmann, J. L. and Mosby, S. and Bredeweg, T. A. and Couture, A. J. and Haight, R. C. and Jandel, M. and Kawano, T. and O'Donnell, J. M. and Rundberg, R. S. and Vieira, D. J. and et al.}, year={2014}, month={May}, pages={22–25} }
 @article{gunsing_fraval_mathelie_valenta_becvar_rusev_tonchev_mitchell_baramsai_altstadt_et al._2014, title={Spin measurements of n+Sr-87 for level density studies}, volume={119}, journal={Nuclear Data Sheets}, author={Gunsing, F. and Fraval, K. and Mathelie, M. and Valenta, S. and Becvar, F. and Rusev, G. and Tonchev, A. P. and Mitchell, G. and Baramsai, B. and Altstadt, S. and et al.}, year={2014}, pages={E132–136} }
 @article{kroll_agvaanluvsan_baramsai_becker_becvar_bredeweg_chyzh_couture_dashdorj_haight_et al._2014, title={Systematics of Scissors Mode in Gd Nuclei from Experiments with the DANCE Detector}, volume={119}, ISSN={["1095-9904"]}, DOI={10.1016/j.nds.2014.08.044}, abstractNote={Multi-step cascade γ-ray spectra from neutron capture at isolated resonances of 152,154−158Gd nuclei were measured at the LANSCE/DANCE time-of-flight facility in Los Alamos National Laboratory. The main objective of these experiments was to obtain new information on photon strength functions with emphasis on the role of the M1 scissors mode vibration. An analysis of the data obtained shows that the scissors mode plays a significant role in the ground state transitions, as well as in the transitions populating all excited states of the studied nuclei. The estimates of the scissors mode strength indicate that for 157,159Gd this strength is significantly higher than in neighboring even–even nuclei 156,158Gd. The results are compared with the (γ,γ′) data for the ground-state scissors mode and the results from 3He-induced reactions.}, journal={NUCLEAR DATA SHEETS}, author={Kroll, J. and Agvaanluvsan, U. and Baramsai, B. and Becker, J. A. and Becvar, F. and Bredeweg, T. A. and Chyzh, A. and Couture, A. and Dashdorj, D. and Haight, R. C. and et al.}, year={2014}, month={May}, pages={158–161} }
 @article{baramsai_mitchell_walker_bredeweg_couture_haight_jandel_mosb_o'donnell_rundberg_et al._2013, title={(n,gamma) Experiments On Tin Isotopes}, volume={1525}, ISSN={["0094-243X"]}, DOI={10.1063/1.4802394}, abstractNote={Neutron capture experiments on highly enriched 117,119Sn isotopes were performed with the DANCE detector array located at the Los Alamos Neutron Science Center. The DANCE detector provides detailed information about the multi-step γ-ray cascade following neutron capture. Analysis of the experimental data provides important information to improve understanding of the neutron capture reaction, including a test of the statistical model, the assignment of spins and parities of neutron resonances, and information concerning the Photon Strength Function (PSF) and Level Density (LD) below the neutron separation energy. Preliminary results for the (n,γ) reaction on 117,119Sn are presented. Resonance spins of the odd-A tin isotopes were almost completely unknown. Resonance spins and parities have been assigned via analysis of the multi-step γ-ray spectra and directional correlations.}, journal={APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY}, author={Baramsai, B. and Mitchell, G. E. and Walker, C. L. and Bredeweg, T. A. and Couture, A. and Haight, R. C. and Jandel, M. and Mosb, S. and O'Donnell, J. M. and Rundberg, R. S. and et al.}, year={2013}, pages={577–580} }
 @article{baramsai_kroll_mitchell_agvaanluvsan_becvar_bredeweg_chyzh_couture_dashdorj_haight_et al._2013, title={Photon strength functions of Gd-156 from radiative capture of resonance neutrons}, volume={87}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.87.044609}, abstractNote={The ${}^{155}$Gd($n,\ensuremath{\gamma}$) reaction was measured with the DANCE $\ensuremath{\gamma}$-ray calorimeter (consisting of 160 BaF${}_{2}$ scintillation detectors) at the Los Alamos Neutron Science Center. The $\ensuremath{\gamma}$-ray energy spectra for different multiplicities were obtained for the $s$-wave resonances. The shapes of these spectra were compared with simulations based on the use of the dicebox statistical model code. Simulations showed that the photon strength functions (PSFs) successfully describing the decay of ${}^{156}$Gd are very similar to the PSFs describing the decay of previously published ${}^{158}$Gd results. It was demonstrated that the scissors mode is required not only for the ground-state transitions, but also for transitions between excited states.}, number={4}, journal={PHYSICAL REVIEW C}, author={Baramsai, B. and Kroll, J. and Mitchell, G. E. and Agvaanluvsan, U. and Becvar, F. and Bredeweg, T. A. and Chyzh, A. and Couture, A. and Dashdorj, D. and Haight, R. C. and et al.}, year={2013}, month={Apr} }
 @article{kroll_becvar_krticka_valenta_baramsai_mitchell_walker_bredeweg_couture_haight_et al._2013, title={Scissors mode of Gd nuclei measured, with the DANCE detector}, volume={T154}, ISSN={["1402-4896"]}, DOI={10.1088/0031-8949/2013/t154/014009}, abstractNote={Spectra of γ-rays following the neutron capture at isolated resonances of stable Gd nuclei were measured with the DANCE detector. The objectives were to obtain new information on the photon strength of 153,155−159Gd with emphasis on the role of the M1 scissors-mode vibration. An analysis of the data obtained clearly indicates that the scissors mode is built not only on the ground state, but also on all excited levels of the nuclei studied. Our approach allows estimating the summed scissors-mode strength even for odd product nuclei for which conventional nuclear resonance fluorescence measurements yield only limited information. Our data indicate that for 157,159Gd the strength is significantly higher compared to 156,158Gd.}, journal={PHYSICA SCRIPTA}, author={Kroll, J. and Becvar, F. and Krticka, M. and Valenta, S. and Baramsai, B. and Mitchell, G. E. and Walker, C. L. and Bredeweg, T. A. and Couture, A. and Haight, R. C. and et al.}, year={2013}, month={May} }
 @article{kroll_baramsai_mitchell_agvaanluvsan_becvar_bredeweg_chyzh_couture_dashdorj_haight_et al._2013, title={Strength of the scissors mode in odd-mass Gd isotopes from the radiative capture of resonance neutrons}, volume={88}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.88.034317}, abstractNote={Radiative neutron capture reaction was measured in the resolved resonance region for ${}^{152,154,156,158}$Gd targets with the Detector for Advanced Neutron Capture Experiments $\ensuremath{\gamma}$-ray calorimeter at the Los Alamos Neutron Science Center. The $\ensuremath{\gamma}$-ray energy spectra for different multiplicities were obtained for several $s$-wave resonances in each nucleus. These spectra were analyzed within the extreme statistical model to provide unique information on the photon strength functions and especially on the scissors mode in odd Gd isotopes. The main result of this analysis is that in all nuclei scissors-mode resonances are built on excited levels and not only on their ground states. The strength of the mode found in ${}^{153}$Gd and ${}^{155}$Gd is comparable to the strength observed in well-deformed even-even Gd isotopes while it is substantially higher in ${}^{157,159}$Gd. The difference in observed strengths of the scissors mode indicates an existence of an even-odd effect in this quantity.}, number={3}, journal={PHYSICAL REVIEW C}, author={Kroll, J. and Baramsai, B. and Mitchell, G. E. and Agvaanluvsan, U. and Becvar, F. and Bredeweg, T. A. and Chyzh, A. and Couture, A. and Dashdorj, D. and Haight, R. C. and et al.}, year={2013}, month={Sep} }
 @article{baramsai_mitchell_walker_bredeweg_couture_haight_jandel_o'donnell_rundberg_ullmann_et al._2012, title={Neutron capture experiments with 4 pi DANCE Calorimeter}, volume={21}, ISSN={["2100-014X"]}, DOI={10.1051/epjconf/20122103002}, abstractNote={In recent years we have performed a series of neutron capture experiments with the DANCE detector array located at the Los Alamos Neutron Science Center. The radiative decay spectrum from the compound nucleus contains important information about nuclear structure and the reaction mechanism. The primary goals of the measure- ments are to obtain improved capture cross sections, to determine properties of the photon strength function, to improve neutron level densities and strength functions by determin- ing the spin and parity of the capturing states. We shall present examples of our recent results.}, journal={CNR*11 - THIRD INTERNATIONAL WORKSHOP ON COMPOUND NUCLEAR REACTIONS AND RELATED TOPICS}, author={Baramsai, B. and Mitchell, G. E. and Walker, C. L. and Bredeweg, T. A. and Couture, A. and Haight, R. C. and Jandel, M. and O'Donnell, J. M. and Rundberg, R. S. and Ullmann, J. and et al.}, year={2012} }
 @article{baramsai_mitchell_agvaanluvsan_becvar_bredeweg_chyzh_couture_dashdorj_haight_jandel_et al._2012, title={Neutron resonance parameters in Gd-155 measured with the DANCE gamma-ray calorimeter array}, volume={85}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.85.024622}, abstractNote={The ${}^{155}$Gd($n$,$\ensuremath{\gamma}$) reaction was measured with the DANCE $\ensuremath{\gamma}$-ray calorimeter at the Los Alamos Neutron Science Center. Spins were determined for the $s$-wave resonances by analysis of the $\ensuremath{\gamma}$-ray multiplicity distributions. The analysis was performed with a pattern recognition method. The resulting level densities for the $J=1$ and 2 resonances are in qualitative agreement with the expected 2$J$ $+$ 1 dependence. The average $s$-wave resonance spacing was determined to be ${D}_{0}=1.62$ $\ifmmode\pm\else\textpm\fi{}$ 0.15 eV. Analysis of the neutron resonances with the code sammy yielded the $s$-wave strength function ${S}_{0}=1.99\ifmmode\pm\else\textpm\fi{}0.28\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ and the average total radiative width ${\ensuremath{\Gamma}}_{\ensuremath{\gamma}}$ $=$ 120 $\ifmmode\pm\else\textpm\fi{}$ 3 meV.}, number={2}, journal={PHYSICAL REVIEW C}, author={Baramsai, B. and Mitchell, G. E. and Agvaanluvsan, U. and Becvar, F. and Bredeweg, T. A. and Chyzh, A. and Couture, A. and Dashdorj, D. and Haight, R. C. and Jandel, M. and et al.}, year={2012}, month={Feb} }
 @article{ullmann_couture_keksis_vieira_o'donnell_wouters_jandel_haight_rundberg_bredeweg_et al._2011, title={Measurement of the U-238 Neutron-capture Cross Section and Gamma-emission Spectra from 10 eV to 100 keV Using the DANCE Detector at LANSCE}, volume={59}, ISSN={["1976-8524"]}, DOI={10.3938/jkps.59.1406}, abstractNote={A careful new measurement of the {sup 238}U(n,{gamma}) cross section from 10 eV to 100 keV has been made using the DANCE detector at LANSCE. DANCE is a 4{pi} calorimetric scintillator array consisting of 160 BaF{sub 2} crystals. Measurements were made on a 48 mg/cm{sup 2} depleted uranium target. The cross sections are in general good agreement with previous measurements. The gamma-ray emission spectra, as a function of gamma multiplicity, were also measured and compared to model calculations.}, number={2}, journal={JOURNAL OF THE KOREAN PHYSICAL SOCIETY}, author={Ullmann, J. L. and Couture, A. J. and Keksis, A. L. and Vieira, D. J. and O'Donnell, J. M. and Wouters, J. M. and Jandel, M. and Haight, R. C. and Rundberg, R. S. and Bredeweg, T. A. and et al.}, year={2011}, month={Aug}, pages={1406–1409} }