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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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DOE OSTI2024

Multi-Differential Charged Current $\nu_{\mu}$ - Argon Cross Section without Pions in the Final State Measurement in MicroBooNE

MicroBooNE, an 85-tonne liquid argon time projection chamber (LArTPC) detector is on-axis to the Booster Neutrino Beam (BNB) beamline facility at Fermi National Accelerator Laboratory. MicroBooNE is elucidating neutrino interactions with argon through cross-section measurements to refine interaction models and reduce uncertainties. In this poster, we present the status of the single and double multi-differential charged current (CC) cross section with zero pions in the final state (CC-0$\pi$) as a function of muon momentum ($0.1<p_\mu<2.0\,\mathrm{GeV/c}$) and the cosine of the muon angle ($-1<\cos\theta_\mu<1$). We present the details of the event selection and cross section extraction along with a set of tests using fake data to establish the robustness of the analysis methodology. We also discuss prospects for a future combined measurement with the Gd-H$_2$O target at the ANNIE experiment, to explore MicroBooNE’s proton multiplicity alongside ANNIE’s neutron multiplicity.

43 PARTICLE ACCELERATORS↗

DOE OSTI2026

Multi-Differential Charged Current 𝝂_𝝁− Argon Cross Section without Pions in the Final State Measurement in MicroBooNE , and Current Status of Simultaneous Cross Section Extraction with ANNIE

MicroBooNE, an 85-tonne liquid argon time projection chamber detector is on-axis to the Booster Neutrino Beam (BNB) at Fermi National Accelerator Laboratory. MicroBooNE is elucidating neutrino interactions with argon through cross-section measurements to refine interaction models and reduce uncertainties. In this poster, we present recent published single and double multi-differential charged current (CC) cross section with zero pions in the final state (CC-0 ) as a function of muon momentum ( ) and the cosine of the muon angle ( ). We present the details of the event selection and the extraction of 1D and 2D cross sections. We further report on the status of a simultaneous cross-section extraction conducted in conjunction with the ANNIE experiment, which employs a Gd-H O target and operates on the same BNB beamline. This joint measurement enables a precision test of nuclear A-dependence between oxygen and argon, with shared flux and cross-section model correlations leading to the cancellation of systematic uncertainties.

Nguyen, Christian Van [Rutgers U., Piscataway] (OR↗

DOE OSTI2020

Materials Data on GdH2 by Materials Project

GdH2 is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Gd is bonded in a body-centered cubic geometry to eight equivalent H atoms. All Gd–H bond lengths are 2.30 Å. H is bonded to four equivalent Gd atoms to form a mixture of edge and corner-sharing HGd4 tetrahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on GdH3 by Materials Project

GdH3 is Sodium arsenide structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Gd3+ is bonded in a 11-coordinate geometry to eleven H1- atoms. There are a spread of Gd–H bond distances ranging from 2.15–2.39 Å. There are two inequivalent H1- sites. In the first H1- site, H1- is bonded to four equivalent Gd3+ atoms to form a mixture of corner, edge, and face-sharing HGd4 tetrahedra. In the second H1- site, H1- is bonded in a trigonal planar geometry to three equivalent Gd3+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on GdH3 by Materials Project

GdH3 crystallizes in the trigonal P-3c1 space group. The structure is three-dimensional. Gd3+ is bonded in a 11-coordinate geometry to eleven H1- atoms. There are a spread of Gd–H bond distances ranging from 2.16–2.52 Å. There are three inequivalent H1- sites. In the first H1- site, H1- is bonded in a trigonal non-coplanar geometry to three equivalent Gd3+ atoms. In the second H1- site, H1- is bonded to four equivalent Gd3+ atoms to form a mixture of distorted edge, face, and corner-sharing HGd4 tetrahedra. In the third H1- site, H1- is bonded in a trigonal planar geometry to three equivalent Gd3+ atoms.

36 MATERIALS SCIENCE↗