About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Neutron and X-ray Scattering in Materials Science
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Presentation Title |
L-55: Neutron Compton Scattering of Hydrogen in Zirconium |
Author(s) |
Brent J. Heuser, Timothy Prisk, Alexander Kolesnikov, Garrett Granroth, Jun-Li Lin |
On-Site Speaker (Planned) |
Brent J. Heuser |
Abstract Scope |
We report on deep inelastic neutron scattering measurements of the zero point energy of interstitial hydrogen in zirconium using SEQUOIA at the Spallation Neutron Source. In addition, the vibrational modes were characterized in the same set of measurements. The dynamic structure factor exhibits dispersionless bands of the fundamental and higher optical phonon modes. At 6.2eV incident energy the recoil dispersion of ground state hydrogen is captured. Analysis of the recoil dispersion is consistent with a harmonic ground state of hydrogen. Anharmonic effects are evident in the excited states of hydrogen via the multiphonon bands. The hydrogen (proton) kinetic energy in zirconium is measured as E=109.0eV in ZrH2 and as 113eV in ZrH0.0155 at 6K. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, |