Khachatur V. Manukyan
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View article: Alpha-decay width of a near proton-threshold resonance in the 7Li(α, α) channel
Alpha-decay width of a near proton-threshold resonance in the 7Li(α, α) channel Open
We investigate the alpha-decay width of a near proton-threshold resonance in 11B by the excitation functions of 7Li(α, α) and 7Li(α, α’) reactions. This resonance is an example of loosely bound atomic nuclei, understood as small open quant…
View article: Thermally driven rock-salt to spinel transition in high-entropy (CoFeMnNiZn)xOy oxides: Effects on magnetic and mechanical properties
Thermally driven rock-salt to spinel transition in high-entropy (CoFeMnNiZn)xOy oxides: Effects on magnetic and mechanical properties Open
View article: Oxidation mechanisms of tantalum carbides at extreme temperatures
Oxidation mechanisms of tantalum carbides at extreme temperatures Open
View article: Formation mechanism and kinetics of Ni3CuN complex nitride in solution combustion synthesis
Formation mechanism and kinetics of Ni3CuN complex nitride in solution combustion synthesis Open
View article: Commissioning of the neutron irradiation station at the University of Notre Dame
Commissioning of the neutron irradiation station at the University of Notre Dame Open
View article: Strength measurements of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msubsup><mml:mi>E</mml:mi><mml:mi mathvariant="normal">R</mml:mi><mml:mi>lab</mml:mi></mml:msubsup><mml:mo>=</mml:mo><mml:mn>647</mml:mn></mml:mrow></mml:math> and 1842 keV resonances in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:mprescripts/><mml:none/><mml:mn>40</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mi>γ</mml:mi><mml:mo>)</mml:mo><mml:mmultiscripts><mml:mi>Sc</mml:mi><mml:mprescripts/><mml:none/><mml:mn>41</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> reaction and their relevance in novae nucleosynthesis
Strength measurements of the and 1842 keV resonances in the reaction and their relevance in novae nucleosynthesis Open
Here we report on the direct measurement of the resonance strengths of the ERlab=647keV and 1842 keV resonances in the Ca
View article: Probing Rapid Exothermic Gas-Solid Reactions in Refractory Materials Using Electrothermography Method
Probing Rapid Exothermic Gas-Solid Reactions in Refractory Materials Using Electrothermography Method Open
View article: First experiments with a graphite moderator for the Neutron Target Demonstator (NTD)
First experiments with a graphite moderator for the Neutron Target Demonstator (NTD) Open
This report is a major update of the report ”Cubical moderators for the Neutron\nTarget Demonstator (NTD), LA-UR-23-33899”. It serves as a documentation\nof milestone M1 of the LDRD project 20240004DR.
View article: Comprehensive study of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>d</mml:mi><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Li</mml:mi><mml:mprescripts/><mml:none/><mml:mn>6</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> via observing simultaneous outgoing neutrons, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math> rays, and charged particles
Comprehensive study of via observing simultaneous outgoing neutrons, rays, and charged particles Open
View article: Proceedings for the Workshop on Applied Nuclear Data Activities 2024
Proceedings for the Workshop on Applied Nuclear Data Activities 2024 Open
The Workshop for Applied Nuclear Data Activities (WANDA) is designed to increase communication among nuclear data (ND) users in multidisciplinary federal programs, ND producers, ND funders, and other ND experts. It also presents an opportu…
View article: High-pressure phase transition in 3-D printed nanolamellar high-entropy alloy by imaging and simulation insights
High-pressure phase transition in 3-D printed nanolamellar high-entropy alloy by imaging and simulation insights Open
View article: Strength measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msubsup><mml:mi>E</mml:mi><mml:mrow><mml:mi>α</mml:mi></mml:mrow><mml:mi>lab</mml:mi></mml:msubsup><mml:mo>=</mml:mo><mml:mn>830</mml:mn></mml:mrow></mml:math> keV resonance in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Ne</mml:mi><mml:mprescripts/><mml:none/><mml:mn>22</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:mi>n</mml:mi><mml:mo>)</mml:mo><mml:mmultiscripts><mml:mi>Mg</mml:mi><mml:mprescripts/><mml:none/><mml:mn>25</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> reaction using a stilbene detector
Strength measurement of the keV resonance in the reaction using a stilbene detector Open
The interplay between the 22Ne (α,γ) 26Mg reaction and the competing 22Ne (α,n) 25Mg reaction determines the efficiency of the latter as a neutron source at the temperatures of stellar helium bu…
View article: High-Pressure Phase Transition in 3-D Printed Nanolamellar High-Entropy Alloy: Imaging and Simulation Insights
High-Pressure Phase Transition in 3-D Printed Nanolamellar High-Entropy Alloy: Imaging and Simulation Insights Open
We report on the high-resolution imaging and molecular dynamics simulations of a 3D-printed eutectic high-entropy alloy (EHEA) Ni40Co20Fe10Cr10Al18W2 consisting of nanolamellar BCC and FCC phases. The direct lattice imaging of 3D-printed s…
View article: Energy, strength, and alpha width measurements of $E_{\rm{c.m.}} = 1323$ and $1487$ keV resonances in $^{15}$N($α,γ$)$^{19}$F
Energy, strength, and alpha width measurements of $E_{\rm{c.m.}} = 1323$ and $1487$ keV resonances in $^{15}$N($α,γ$)$^{19}$F Open
The $^{15}$N($α,γ$)$^{19}$F reaction produces $^{19}$F in asymptotic giant branch (AGB) stars, where the low energy tails of two resonances at $E_{\rm{c.m.}} = 1323 \pm 2$ and $1487 \pm 1.7$ keV are estimated to contribute about $30\%$ of …
View article: Measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>13</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:mtext> </mml:mtext><mml:msub><mml:mrow><mml:mi>n</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>16</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> Differential Cross Section from 0.8 to 6.5 MeV
Measurement of the Differential Cross Section from 0.8 to 6.5 MeV Open
The cross section of the ^{13}C(α,n)^{16}O reaction is needed for nuclear astrophysics and applications to a precision of 10% or better, yet inconsistencies among 50 years of experimental studies currently lead to an uncertainty of ≈15%. U…
View article: Deep underground measurement of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">B</mml:mi><mml:mprescripts/><mml:none/><mml:mn>11</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:mi>n</mml:mi><mml:mo>)</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">N</mml:mi><mml:mprescripts/><mml:none/><mml:mn>14</mml:mn></mml:mmultiscripts></mml:math>
Deep underground measurement of Open
The primordial elemental abundance composition of the first stars leads to questions about their modes of energy production and nucleosynthesis. The formation of 12C has been thought to occur primarily through the 3α process, ho…
View article: Combustion synthesis of Eu2O3 nanomaterials with tunable phase composition and morphology
Combustion synthesis of Eu2O3 nanomaterials with tunable phase composition and morphology Open
View article: Multiscale analysis of Benjamin Franklin’s innovations in American paper money
Multiscale analysis of Benjamin Franklin’s innovations in American paper money Open
Benjamin Franklin was a preeminent proponent of the new colonial and Continental paper monetary system in 18th-century America. He established a network of printers, designing and printing money notes at the same time. Franklin recognized …
View article: Electrospraying deposition and characterization of potassium chloride targets for nuclear science measurements
Electrospraying deposition and characterization of potassium chloride targets for nuclear science measurements Open
View article: Bayesian optimization of metastable nickel formation during the spontaneous crystallization under extreme conditions
Bayesian optimization of metastable nickel formation during the spontaneous crystallization under extreme conditions Open
Spontaneous crystallization of metals under extreme conditions is a unique phenomenon occurring under far-from-equilibrium conditions that could enable the development of revolutionary and disruptive metastable metals with unusual properti…
View article: Combustion synthesis and spark plasma sintering of apatite-tricalcium phosphate nanocomposites
Combustion synthesis and spark plasma sintering of apatite-tricalcium phosphate nanocomposites Open
A processing route consisting of Spark Plasma Sintering (SPS) of precursor powders prepared by Solution Combustion Synthesis (SCS) is proposed for the first time for the fabrication of bulk nanostructured biphasic calcium phosphates. The a…
View article: Irradiation-enhanced Interactions at UO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>/Al Interfaces
Irradiation-enhanced Interactions at UO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub>/Al Interfaces Open
Combustion synthesis is used to prepare thin UO2 films on aluminum alloy substrates. This simple preparation method involves electrospraying uranyl nitrate + acetylacetone + 2-methoxyethanol solution on the substrate, followed b…
View article: Bayesian Optimization of Metastable Nickel Formation During the Spontaneous Crystallization under Extreme Conditions
Bayesian Optimization of Metastable Nickel Formation During the Spontaneous Crystallization under Extreme Conditions Open
Spontaneous crystallization of metals under extreme conditions is a unique phenomenon occurring under far-from-equilibrium conditions that could enable the development of revolutionary and disruptive metastable metals with unusual properti…
View article: UO<sub>2</sub> target preparation with spin coating assisted solution combustion synthesis
UO<sub>2</sub> target preparation with spin coating assisted solution combustion synthesis Open
A simple and efficient target preparation method is developed combining spin coating and solution combustion synthesis. Multiple smooth and uniform UO 2 targets have been prepared using this method on a variety of backings (aluminium, carb…
View article: First near-threshold measurements of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>13</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:msub><mml:mi>n</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:mo>)</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts/><mml:none/><mml:mn>16</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> reaction for low-background-environment characterization
First near-threshold measurements of the reaction for low-background-environment characterization Open
The modeling of background sources in large volume detection systems requires accurate nuclear cross sections for a variety of reactions. Among the most important are (α,n) on light nuclei, where α particles, up to ≈9 MeV, are produced fro…
View article: Neutron capture of UO2 targets prepared by spin-coating assisted combustion synthesis
Neutron capture of UO2 targets prepared by spin-coating assisted combustion synthesis Open
View article: Irradiation-induced amorphization of UO2 films prepared by spraying-assisted combustion synthesis
Irradiation-induced amorphization of UO2 films prepared by spraying-assisted combustion synthesis Open
View article: Preparation and characterization of isotopically pure Mo targets for nuclear science measurements
Preparation and characterization of isotopically pure Mo targets for nuclear science measurements Open
View article: Light Response of Poly(ethylene 2,6-napthalate) to Neutrons
Light Response of Poly(ethylene 2,6-napthalate) to Neutrons Open
There is increasing necessity for low background active materials as ton-scale, rare-event and cryogenic detectors are developed. Poly(ethylene-2,6-naphthalate) (PEN) has been considered for these applications because of its robust structu…