Journal ArticlePhysical Review C · August 1, 2024
The ground-state decay width of the two-phonon Jπ=1-, 4742 keV state of Sr88 has been determined with the relative self-absorption method combined with a monoenergetic photon beam. This width is important to determine the decay transition strengths into th ...
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Journal ArticleNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment · June 1, 2024
The masses of thin, electroplated deposits of 235U, 238U and 239Pu on titanium backings have been determined to better than 1.3% precision by employing three complementary measurement techniques: α spectrometry, 2π gas counting, and γ-ray spectrometry. A d ...
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Journal ArticlePhysical Review C · April 1, 2024
An extensive dataset of cumulative fission product yields has been generated under a joint collaboration between Los Alamos National Laboratory (LANL), Lawrence Livermore National Laboratory (LLNL), and the Triangle Universities Nuclear Laboratory (TUNL). ...
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Journal ArticlePhysical Review C · April 1, 2024
Two complementary real-photon scattering experiments were conducted on the proton-magic Ni64 nucleus to study the dipole response up to its neutron-separation energy of Sn=9.7MeV. By combining both measurements, 87 E1 and 23 M1 transitions were identified ...
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Journal ArticleNucl Med Biol · 2024
INTRODUCTION: Targeted α-particle therapy agents have shown promising responses in patients who have developed resistance to β--particle emitting radionuclides, albeit off-target toxicity remains a concern. Astatine-211 emits only one α-particle per decay ...
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Journal ArticleFusion Science and Technology · January 1, 2024
In order to benchmark methods used to calculate reaction-in-flight fusion reactions in inertial confinement fusion and address issues related to the first claimed observation of d(t,n)α reactions in 1938, secondary d(t,n)α reactions have been observed foll ...
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Journal ArticlePhysical review letters · August 2023
We report on new measurements establishing the existence of low-lying isomeric states in ^{136}Cs using γ rays produced in ^{136}Xe(p,n)^{136}Cs reactions. Two states with O(100) ns lifetimes are placed in the decay sequence of the ^{136}Cs levels that ar ...
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Journal ArticlePhysical Review C · August 1, 2023
With their complex low-spin structure, the germanium isotopes have accrued a large number of experimental data which challenge nuclear models. The structure of the Ge74 isotope is investigated here with nuclear resonance fluorescence as part of an extensiv ...
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Journal ArticlePhysical Review C · May 1, 2023
We present cumulative fission product yields from the U238(n,f) reaction at an incident energy of 4.6 MeV for fission products with half-lives from less than one second to several hours. We employed direct γ-ray spectroscopy to measure unseparated fission ...
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Journal ArticlePhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics · December 10, 2022
In view of the great interest in liquid argon neutrino detectors, the 40Ar(γ,γ′)40Ar reaction was revisited to guide a calculation of the neutral current neutrino cross section at supernova energies. Using the nuclear resonance fluorescence technique with ...
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Journal ArticlePhysical Review C · October 1, 2022
Background: Photon strength functions are an important ingredient in calculations relevant for the nucleosynthesis of heavy elements. The relation to the photoabsorption cross section allows to experimentally constrain photon strength functions by investig ...
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Journal ArticlePhysical Review C · July 1, 2022
We report on the measurement of B11 and Ca40 levels between excitation energies of 8 and 9 MeV using nuclear resonance fluorescence (NRF). The experiment was carried out with nearly monoenergetic and linearly polarized photon beams provided by the High-Int ...
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Journal ArticleNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment · February 11, 2022
A Rapid Belt-driven Irradiated Target Transfer System, named RABITTS, was developed for use at the Triangle Universities Nuclear Laboratory. This system allows for cyclic activation with neutron or photon beams, and measurement of reaction products using γ ...
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Journal ArticlePhysical Review C · December 1, 2021
The well-known spherical-deformed-transitional nucleus and potential 0νββemitter Nd150and its daughter Sm150were investigated in nuclear resonance fluorescence experiments using quasimonoenergetic, linearly polarized γ-ray beams. For both nuclei transition ...
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Journal ArticlePhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics · September 10, 2021
The nature of the high-lying final levels of the 96Ygs β decay, one of the three most important contributors to the high-energy reactor antineutrino spectrum, has been investigated in high-resolution γ-ray spectroscopy following the β decay as well as in a ...
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Journal ArticlePhysical Review C · May 1, 2021
The E2/M1 multipole mixing ratio of the 1sc+→21+γ-ray transition and therefore the F-vector E2 decay of the scissors mode of the shape-phase transitional nucleus Sm152 have been measured with the nuclear resonance fluorescence method at the High-Intensity ...
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Journal ArticlePhysical Review C · April 1, 2021
The Tm169(n,2n)Tm168 and Tm169(n,3n)Tm167 cross sections have been measured in the neutron energy range between 15 and 21 MeV using the H3(d,n)He4 neutron source reaction. The Tm169(n,3n)Tm167 data are intended to provide an accurate database for interpret ...
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Journal ArticlePhysical Review C · April 1, 2021
Gamma-ray production cross-section data have been obtained for the inelastic neutron scattering reactions Te126,128,130(n,n′γ) at five neutron energies between 3.6 and 10 MeV. We report data for the γ-ray energy region relevant to 0νββ decay of Te130 with ...
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Journal ArticlePhysical Review Applied · March 1, 2021
Isomeric fission products, such as 134mTe (T1/2=164 ns) and 136mXe (T1/2=2.95μs), are proposed as a signature of special nuclear materials in active interrogation applications. To test this conjecture, monoenergetic 9, 11, and 13 MeV photons from the HIγS ...
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Journal ArticlePhysical Review C · February 1, 2021
The dipole strength of the nuclide Zn66 was studied in photon-scattering experiments using bremsstrahlung produced with electron beams of energies of 7.5 and 13.4 MeV at the γELBE facility as well as using quasimonoenergetic and linearly polarized photon b ...
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Journal ArticleEuropean Physical Journal A · April 1, 2020
A natural silicon target was investigated in a natSi(γ, γ′) photon-scattering experiment with fully linearly-polarised, quasi-monochromatic γ rays in the entrance channel. The mean photon energies used were ⟨ Eγ⟩ = 9.33, 9.77, 10.17, 10.55, 10.93, and 11.3 ...
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ConferenceEPJ Web of Conferences · 2020
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 generat ...
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ConferenceEPJ Web of Conferences · 2020
Fission product yields (FPYs) are an important source of information that are used for basic and applied physics. They are essential observables to address questions relevant to nucleosynthesis in the cosmos that created the elements from iron to u ...
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ConferenceEPJ Web of Conferences · 2020
The Bohr hypothesis, one of the most fundamental assumptions in nuclear fission theory, states that the decay of a compound nucleus with a given excitation energy, spin and parity is independent of its formation. Using fission product yields (FPYs) ...
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Journal ArticleEPJ Web of Conferences · 2020
Fission product yields (FPYs) are a uniquely sensitive probe of the fission process, with well established dependence on the species of nucleus undergoing fission, its excitation energy and spin. Thus FPYs are well suited for testing Bohr’s hypothe ...
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Journal ArticleEPJ Web of Conferences · 2020
A joint TUNL-LLNL-LANL collaboration was formed to measure the absolute fission product yields from the 235 U, 238 U, and 239 Pu isotopes. Our goal is to study the energy evolution of f ...
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Journal ArticlePhysical Review C · December 6, 2018
For the first time the excitation cross section of In115 to its first excited state at 336.24 keV has been measured with monoenergetic photon beams at 15 energies between 1.8 and 3.7 MeV. The measurements were performed at the High-Intensity Gamma-ray Sour ...
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ConferenceEPJ Web of Conferences · November 14, 2018
Nuclear Resonance Fluorescence (NRF) experiments on the nuclei 82Kr and 82Se were performed, that are a candidates for a mother-daughter pair for the hypothetical neutrinoless double-beta (0νββ) decay. The experiment aimed at providing high-precision data ...
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Journal ArticleJournal of Physics G: Nuclear and Particle Physics · November 12, 2018
Partial cross section measurements were carried out on 136Xe at Triangle Universities Nuclear Laboratory (TUNL) using 5 MeV monoenergetic neutrons. These results are important for estimating potential neutron-induced backgrounds in the nEXO and KamLAND2-Ze ...
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Journal ArticleNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment · 2017Cite
Journal ArticleNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment · January 11, 2016
96Zr and 48Ca are unique among double-β decay candidate nuclides in that they may also undergo single-β decay. In the case of 96Zr, the single-β decay mode is dominated by the fourth-forbidden β decay with a 119 keV Q value. A search was conducted for the ...
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Journal ArticlePhysical Review C - Nuclear Physics · December 31, 2015
Background: Multiple large collaborations are currently searching for neutrinoless double-β decay, with the ultimate goal of differentiating the Majorana-Dirac nature of the neutrino. Purpose: Investigate the feasibility of resonant neutrinoless double-ele ...
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Journal ArticlePhysical Review C - Nuclear Physics · October 8, 2015
Background: Double-β decay is a rare second-order nuclear decay. The importance of this decay stems from the possibility of neutrinoless double-β decay and its applications to neutrino physics. Purpose: A search was conducted for the 2νββ decay of Zr96 to ...
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Journal ArticlePhysical Review C - Nuclear Physics · January 22, 2013
The cross section of the reaction 136Xe(n,2n)135Xe to both the ground state and the 526.6 keV isomeric states of 135Xe was measured between 9.0 and 14.9 MeV. These data are important to guide evaluations and theoretical calculations aimed at estimating the ...
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Journal ArticlePhysical Review C - Nuclear Physics · October 11, 2012
The activation technique was used to measure the cross section for the reaction 40Ar(n,p)40Cl 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- ...
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